topic sentence for definition essay

What is a Topic Sentence? (Definition, Examples, How to Use)

Topic sentence

What is a topic sentence ? A topic sentence , the first sentence of a paragraph, presents the main concept discussed in the paragraph. It must contain sufficient information to support numerous examples and subtopics without being too broad to obscure the essay’s intended purpose. The remaining sentences in the paragraph will act as supporting statements, providing evidence and examples for the main idea.

Topic sentence

Importance of topic sentences

In essays or articles , where subjects can shift from one paragraph to another, a topic phrase is particularly crucial. The topic sentences, superficially, may seem to serve the purpose of only acting like the initial or introductory sentence of a paragraph. But it has numerous other purposes that make it an important part of essays.

  • Topic sentences link paragraphs together to improve the sentence flow and make reading easier. When topic sentences are not used, switching between paragraphs can feel abrupt and jarring to the reader. Authors can maintain the rhythm of their writing using topic sentences and facilitate smooth transitions.
  • Topic sentences show the reader a sample of what to expect from the paragraph. The readers can determine from the topic sentence whether the paragraph will comprise a narrative, a list, anecdotal evidence, statistical data, persuasive opinions, or some other form of evidence.
  • If two conflicting viewpoints are presented in a single paragraph, authors can use more than one topic sentence to inform the readers about the changes in the main concept. For example, paragraphs that “compare and contrast” require more than one topic sentence. In these kinds of paragraphs, authors can start with a topic sentence introducing the first idea and follow it up with proof or evidence supporting the idea. Then they can introduce the second topic sentence conveying the opposing viewpoint, followed by proof or evidence supporting it.

Topic sentence

Different types of topic sentences

The different types of topic sentences include:

Simple statement

This topic sentence is used by authors to make a general observation or statement and then elaborate on it in the body of the paragraph.

New studies are emerging indicating the link between climate change and the emergence of numerous new virus strains.

Interrogative or question

This is used by writers in less formal settings. Authors can start a paragraph using implicit or explicit questions related to the topic of discussion to engage the readers.

How many nations are ready to adapt to rising sea levels?

Complex topic sentences are used when the author is discussing a complicated concept that encompasses multiple ideas. Such topic sentences cover more than a single core idea.

Although many people believe that a mother bird will reject its chick if it is touched by humans, the truth is that birds do not abandon their babies after humans touch them.

Authors can use their topic sentences to make explicit demands or pleas to their readers. This will be helpful in breaking the monotony of the essay.

Let’s look at the data from the latest research.

Purely transitional

Though topic sentences are generally responsible for facilitating a smooth transition between paragraphs, occasionally they are purely transitional. These function best when the main topic shifts abruptly by highlighting the switch.

But not everybody agrees.

Pivot sentences are not found at the beginning of a paragraph but rather in the middle, indicating a change in the topic. Conjunctive adverbs like however, furthermore, and meanwhile are frequently used with them.

However, the undisputed king of tennis, Roger Federer, was dethroned in 2008 at Wimbledon.

How to create good topic sentences

A good topic sentence can be created using some simple steps:

1. Determine the key point of your essay

Writers should first form an understanding of the topic of the essay and then create topic sentences to attract the attention of readers. Constructing a good thesis statement can assist the writer in forming better topic sentences.

2. Have an outline for the essay

The author should form a plan or roadmap beforehand on the topics they want to discuss in a paragraph and the evidence they want to use as supporting statements.

3. Be coherent and clear

Writers should make their topic sentences clear and comprehensible so that the reader can form a clear understanding of what to expect in the paragraph.

4. Share opinions

It is advisable to share the opinion or viewpoint of the author in the topic sentence to attract the attention of the reader. Authors should also refrain from writing obvious facts in the topic sentences.

5. Use specific wordings

The topic sentences ought to be precise enough so that the authors can use a few sentences in the paragraph to support them.

6. Transitions should be added between paragraphs

To give the essay or paper a throughline, authors can create topic sentences that refer to the prior paragraph. A topic sentence can make a reference to the preceding paragraph while introducing the next part by using transitional words.

7. Use new, relevant information

Instead of using an obvious fact that everybody knows as the topic sentence, authors can give new information. It is also important to present them in an interesting way.

8. Create a compound or complex topic statement

Compound or complex topic statements feel advanced and stronger. Authors can create such topic statements to add a high level of sophistication to their text.

Many beginner writers and students confuse thesis statements with topic sentences. In essence, thesis statements establish the major idea discussed in the entire essay or paper, as opposed to topic sentences, which introduce the central concept of a paragraph.

Both of these sentences are responsible for giving the readers a sample of what to expect, but in entirely different capacities. Suppose a person is writing a thesis about the different compounds present in coffee and the health benefits it offers.

The thesis statement will be a generalized statement indicating that there are numerous compounds in coffee that benefit the health of humans. But the topic sentence of each paragraph will introduce any single health benefit or compound present in the coffee.

Topic sentences are typically found at the beginning of a paragraph. But this does not mean that they cannot be placed elsewhere in the paragraph. In some cases, when the details discussed can be summarized into a general statement, topic sentences can be included at the end.

Similarly, in some paragraphs where multiple concepts are discussed, topic sentences may be used in the middle of the paragraph. The placement depends on the number of topics being discussed and the way they are discussed.

  • Merriam Webster – topic sentence – Definition
  • Wikipedia – Topic sentence
  • wikiHow – How to Write a Good Topic Sentence
  • Scribbr – How to Write Topic Sentences | 4 Steps, Examples & Purpose

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Dalia Y.: Dalia is an English Major and linguistics expert with an additional degree in Psychology. Dalia has featured articles on Forbes, Inc, Fast Company, Grammarly, and many more. She covers English, ESL, and all things grammar on GrammarBrain.

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What Is a Topic Sentence?

  • An Introduction to Punctuation
  • Ph.D., Rhetoric and English, University of Georgia
  • M.A., Modern English and American Literature, University of Leicester
  • B.A., English, State University of New York

A topic sentence is a  sentence , sometimes at the beginning of a paragraph , that states or suggests the main idea (or topic ) of a paragraph.

Not all paragraphs begin with topic sentences. In some, the topic sentence appears in the middle or at the end. In others, the topic sentence is implied or absent altogether.

Examples and Observations

  • " Salva and the other boys made cows out of clay. The more cows you made, the richer you were. But they had to be fine, healthy animals. It took time to make a lump of clay look like a good cow. The boys would challenge each other to see who could make the most and best cows." (Linda Sue Park, A Long Walk to Water . Clarion, 2010)
  • " Momma bought two bolts of cloth each year for winter and summer clothes. She made my school dresses, underslips, bloomers, handkerchiefs, Bailey's shirts, shorts, her aprons, house dresses and waists from the rolls shipped to Stamps by Sears and Roebuck. . . ." (Maya Angelou, I Know Why the Caged Bird Sings . Random House, 1969)
  • " You discover what it is like to be hungry. With bread and margarine in your belly, you go out and look into the shop windows. Everywhere there is food insulting you in huge, wasteful piles; whole dead pigs, baskets of hot loaves, great yellow blocks of butter, strings of sausages, mountains of potatoes, vast Gruyère cheeses like grindstones. A snivelling self-pity comes over you at the sight of so much food. You plan to grab a loaf and run, swallowing it before they catch you; and you refrain, from pure funk." (George Orwell, Down and Out in Paris and London . Victor Gollancz, 1933)
  • " The flavor that salt imparts to food is just one of the attributes that manufacturers rely on. For them, salt is nothing less than a miracle worker in processed foods. It makes sugar taste sweeter. It adds crunch to crackers and frozen waffles. It delays spoilage so that the products can sit longer on the shelf. And, just as importantly, it masks the otherwise bitter or dull taste that hounds so many processed foods before salt is added." (Michael Moss, Salt, Sugar, Fat: How the Food Giants Hooked Us . Random House, 2013)
  • " The very idea of retirement is a relatively new invention. For most of human history, people worked until they died or were too infirm to lift a finger (at which point they died pretty fast anyway). It was the German statesman Otto von Bismarck who first floated the concept, in 1883, when he proposed that his unemployed countrymen over the age of 65 be given a pension. This move was designed to fend off Marxist agitation—and to do so on the cheap, since few Germans survived to that ripe old age." (Jessica Bruder, "The End of Retirement." Harper's , August 2014)
  • " Grandma's room I regarded as a dark den of primitive rites and practices. On Friday evenings whoever was home gathered at her door while she lit her Sabbath candles. . . ."  (E.L. Doctorow, World's Fair . Random House, 1985)
  • " Genealogy is an ancient human preoccupation. The God of Hebrew Scripture promised Abraham descendants beyond number, like the stars in the sky and the sand on the seashore. The apostles Matthew and Luke claim that Abraham's lineage went on to include King David and eventually Jesus, though the specifics of their accounts are contradictory. Muslims trace Mohammed's line back through Abraham, to Adam and Eve." (Maud Newton, "America's Ancestry Craze." Harper's , June 2014)
  • " O nce, in a restaurant in Italy with my family, I occasioned enormous merriment, as a nineteenth-century humorist would have put it, by confusing two Italian words. I thought I had, very suavely, ordered for dessert fragoline —those lovely little wild strawberries. Instead, I seem to have asked for fagiolini —green beans. The waiter ceremoniously brought me a plate of green beans with my coffee, along with the flan and the gelato for the kids. The significant insight the mistake provided—arriving mere microseconds after the laughter of those kids, who for some reason still bring up the occasion, often—was about the arbitrary nature of language: the single 'r' rolled right makes one a master of the trattoria, an 'r' unrolled the family fool. . . ." (Adam Gopnik, "Word Magic." The New Yorker , May 26, 2014)
  • " In seventeenth-century Europe, the transformation of man into soldier took on a new form, more concerted and disciplined, and far less pleasant, than wine. New recruits and even seasoned veterans were endlessly drilled, hour after hour, until each man began to feel himself part of a single, giant fighting machine. . . ." (Barbara Ehrenreich, Blood Rites: Origins and History of the Passions of War . Henry Holt and Company, 1997)
  • " What is the appeal of train travel? Ask almost any foamer, and he or she will invariably answer, 'The romance of it!' But just what this means, they cannot really say. It's tempting to think that we are simply equating romance with pleasure, with the superior comfort of a train, especially seated up high in the observation cars. . . ." (Kevin Baker, "21st Century Limited: The Lost Glory of America's Railroads." Harper's , July 2014)
  • " Because science fiction spans the spectrum from the plausible to the fanciful, its relationship with science has been both nurturing and contentious. For every author who meticulously examines the latest developments in physics or computing, there are other authors who invent 'impossible' technology to serve as a plot device (like Le Guin’s faster-than-light communicator, the ansible) or to enable social commentary, the way H. G. Wells uses his time machine to take the reader to the far future to witness the calamitous destiny of the human race." (Eileen Gunn, "Brave New Words." Smithsonian , May 2014)
  • " I passed all the other courses that I took at my university, but I could never pass botany. . . ." (James Thurber, My Life and Hard Times . Harper & Row, 1933)
  • " What is there about this wonderful woman? From next door, she comes striding, down the lawn, beneath the clothesline, laden with cookies she has just baked, or with baby togs she no longer needs, and one's heart goes out. Pops out. The clothesline, the rusted swing set, the limbs of the dying elm, the lilacs past bloom are lit up like rods of neon by her casual washday energy and cheer, a cheer one has done nothing to infuse." (John Updike, "One's Neighbor's Wife." Hugging the Shore: Essays and Criticism . Knopf, 1983)
  • " Television. Why do I watch it? The parade of politicians every evening: I have only to see the heavy, blank faces so familiar since childhood to feel gloom and nausea. . . ." (J.M. Coetzee, Age of Iron . Random House, 1990)
  • " Anyone who has made the coast-to-coast journey across America, whether by train or by car, has probably passed through Garden City, but it is reasonable to assume that few travelers remember the event. It seems just another fair-sized town in the middle--almost the exact middle--of the continental United States. . . ." (Truman Capote, In Cold Blood . Random House, 1966)
  • " Rodeo, like baseball, is an American sport and has been around almost as long. . . ." (Gretel Ehrlich, The Solace of Open Spaces . Viking Penguin, 1985)
  • " What a piece of work is a book! I am not talking about writing or printing. I am talking about the codex we may leaf through, that may be put away on a shelf for whole centuries and will remain there, unchanged and handy. . . ." (William Golding, A Moving Target . Farrar, Straus and Giroux, 1982)

Characteristics of an Effective Topic Sentence

  • "A good topic sentence is concise and emphatic . It is no longer than the idea requires, and it stresses the important word or phrase. Here, for instance, is the topic sentence which opens a paragraph about the collapse of the stock market in 1929: "The Bull Market was dead."(Frederick Lewis Allen) Notice several things. (1) Allen's sentence is brief . Not all topics can be explained in six words, but whether they take six or sixty, they should be phrased in no more words than are absolutely necessary. (2) The sentence is clear and strong: you understand exactly what Allen means. (3) It places the keyword—'dead'—at the end, where it gets heavy stress and leads naturally into what will follow. . . . (4) The sentence stands first in the paragraph. This is where topic sentences generally belong: at or near the beginning." (Thomas S. Kane, The New Oxford Guide to Writing . Oxford Univ. Press, 1988)

Positioning a Topic Sentence

"If you want readers to see your point immediately, open with the topic sentence . This strategy can be particularly useful in letters of application or in argumentative writing. . . . "When specific details lead up to a generalization, putting the topic sentence at the end of the paragraph makes sense. . . . "Occasionally a paragraph's main idea is so obvious that it does not need to be stated explicitly in a topic sentence." (Andrea Lunsford, The St. Martin's Handbook . Bedford/St. Martin's, 2008)

Guidelines for Composing Topic Sentences

"The topic sentence is the most important sentence in your paragraph. Carefully worded and restricted, it helps you generate and control your information. An effective topic sentence also helps readers grasp your main idea quickly. As you draft your paragraphs, pay close attention to the following three guidelines:

  • Make sure you provide a topic sentence. . . .
  • Put your topic sentence first.
  • Be sure your topic sentence is focused. If restricted, a topic sentence discusses only one central idea. A broad or unrestricted topic sentence leads to a shaky, incomplete paragraph for two reasons:
  • The paragraph will not contain enough information to support the topic sentence .
  • A broad topic sentence will not summarize or forecast specific information in the paragraph."

(Philip C. Kolin, Successful Writing at Work , 9th ed. Wadsworth, 2010)

Testing for Topic Sentences

"When testing your article for topic sentences , you should be able to look at each paragraph and say what the topic sentence is. Having said it, look at all the other sentences in the paragraph and test them to make sure they support it. . . .

"If you find that you have come up with the same topic sentence more than once, you have two paragraphs doing the same work. Cut one of them out.

"If you find a paragraph that has several sentences that don't support the topic sentence, see if all the outlaw sentences support some other topic sentence and turn the one paragraph into two." (Gary Provost, "How to Test Your Articles for the 8 Essentials of Nonfiction." Handbook of Magazine Article Writing , ed. by Jean M. Fredette. Writer's Digest Books, 1988)

Frequency of Topic Sentences

"Teachers and textbook writers should exercise caution in making statements about the frequency with which contemporary professional writers use simple or even explicit topic sentences in expository paragraphs. It is abundantly clear that students should not be told that professional writers usually begin their paragraphs with topic sentences."  (Richard Braddock, "The Frequency and Placement of Topic Sentences in Expository Prose." Research in the Teaching of English . Winter 1974)

  • How to Find the Main Idea
  • How to Write a Good Descriptive Paragraph
  • Examples of Great Introductory Paragraphs
  • Practice Composing Effective Topic Sentences
  • Paragraph Unity: Guidelines, Examples, and Exercises
  • Ways of Achieving Emphasis in Writing and in Speech
  • Conciseness for Better Composition
  • How to Write a Paragraph Developed With Reasons
  • What Is the Inverted Pyramid Method of Organization?
  • Beginning Level Curriculum for ESL Classes
  • Rhetorical Analysis of E B. White's 'The Ring of Time'
  • How to Teach Topic Sentences Using Models
  • Cohesion Strategies: A List of Transitional Words and Phrases
  • Padding and Composition
  • Model Place Descriptions
  • What Is Expository Writing?

Topic sentences and signposts make an essay's claims clear to a reader. Good essays contain both.  Topic sentences   reveal the main point of a paragraph. They show the relationship of each paragraph to the essay's thesis, telegraph the point of a paragraph, and tell your reader what to expect in the paragraph that follows. Topic sentences also establish their relevance right away, making clear why the points they're making are important to the essay's main ideas. They argue rather than report.  Signposts , as their name suggests, prepare the reader for a change in the argument's direction. They show how far the essay's argument has progressed vis-ˆ-vis the claims of the thesis. 

Topic sentences and signposts occupy a middle ground in the writing process. They are neither the first thing a writer needs to address (thesis and the broad strokes of an essay's structure are); nor are they the last (that's when you attend to sentence-level editing and polishing). Topic sentences and signposts deliver an essay's structure and meaning to a reader, so they are useful diagnostic tools to the writer—they let you know if your thesis is arguable—and essential guides to the reader

Forms of Topic Sentences

 Sometimes topic sentences are actually two or even three sentences long. If the first makes a claim, the second might reflect on that claim, explaining it further. Think of these sentences as asking and answering two critical questions: How does the phenomenon you're discussing operate? Why does it operate as it does?

There's no set formula for writing a topic sentence. Rather, you should work to vary the form your topic sentences take. Repeated too often, any method grows wearisome. Here are a few approaches.

Complex sentences.   Topic sentences at the beginning of a paragraph frequently combine with a transition from the previous paragraph. This might be done by writing a sentence that contains both subordinate and independent clauses, as in the example below.

 Although  Young Woman with a Water Pitcher  depicts an unknown, middle-class woman at an ordinary task, the image is more than "realistic"; the painter [Vermeer] has imposed his own order upon it to strengthen it. 

This sentence employs a useful principle of transitions: always move from old to new information.  The subordinate clause (from "although" to "task") recaps information from previous paragraphs; the independent clauses (starting with "the image" and "the painter") introduce the new information—a claim about how the image works ("more than Ôrealistic'") and why it works as it does (Vermeer "strengthens" the image by "imposing order"). 

Questions.   Questions, sometimes in pairs, also make good topic sentences (and signposts).  Consider the following: "Does the promise of stability justify this unchanging hierarchy?" We may fairly assume that the paragraph or section that follows will answer the question. Questions are by definition a form of inquiry, and thus demand an answer. Good essays strive for this forward momentum.

Bridge sentences.   Like questions, "bridge sentences" (the term is John Trimble's) make an excellent substitute for more formal topic sentences. Bridge sentences indicate both what came before and what comes next (they "bridge" paragraphs) without the formal trappings of multiple clauses: "But there is a clue to this puzzle." 

Pivots.   Topic sentences don't always appear at the beginning of a paragraph. When they come in the middle, they indicate that the paragraph will change direction, or "pivot." This strategy is particularly useful for dealing with counter-evidence: a paragraph starts out conceding a point or stating a fact ("Psychologist Sharon Hymer uses the term Ônarcissistic friendship' to describe the early stage of a friendship like the one between Celie and Shug"); after following up on this initial statement with evidence, it then reverses direction and establishes a claim ("Yet ... this narcissistic stage of Celie and Shug's relationship is merely a transitory one. Hymer herself concedes . . . "). The pivot always needs a signal, a word like "but," "yet," or "however," or a longer phrase or sentence that indicates an about-face. It often needs more than one sentence to make its point.

Signposts operate as topic sentences for whole sections in an essay. (In longer essays, sections often contain more than a single paragraph.) They inform a reader that the essay is taking a turn in its argument: delving into a related topic such as a counter-argument, stepping up its claims with a complication, or pausing to give essential historical or scholarly background. Because they reveal the architecture of the essay itself, signposts remind readers of what the essay's stakes are: what it's about, and why it's being written. 

Signposting can be accomplished in a sentence or two at the beginning of a paragraph or in whole paragraphs that serve as transitions between one part of the argument and the next. The following example comes from an essay examining how a painting by Monet,  The Gare Saint-Lazare: Arrival of a Train,  challenges Zola's declarations about Impressionist art. The student writer wonders whether Monet's Impressionism is really as devoted to avoiding "ideas" in favor of direct sense impressions as Zola's claims would seem to suggest. This is the start of the essay's third section:

It is evident in this painting that Monet found his Gare Saint-Lazare motif fascinating at the most fundamental level of the play of light as well as the loftiest level of social relevance.  Arrival of a Train  explores both extremes of expression. At the fundamental extreme, Monet satisfies the Impressionist objective of capturing the full-spectrum effects of light on a scene.

 The writer signposts this section in the first sentence, reminding readers of the stakes of the essay itself with the simultaneous references to sense impression ("play of light") and intellectual content ("social relevance"). The second sentence follows up on this idea, while the third serves as a topic sentence for the paragraph. The paragraph after that starts off with a topic sentence about the "cultural message" of the painting, something that the signposting sentence predicts by not only reminding readers of the essay's stakes but also, and quite clearly, indicating what the section itself will contain. 

Copyright 2000, Elizabeth Abrams, for the Writing Center at Harvard University

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topic sentence for definition essay

How to Write a Strong Topic Sentence + Examples

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What’s Covered:

  • What Is a Topic Sentence?
  • 5 Steps to Writing a Good Topic Sentence

Elements of a Good Topic Sentence

Common pitfalls to avoid.

  • Where To Get Your Essay Edited For Free

Crafting the perfect essay takes time and dedication. There are so many elements you have to worry about, such as tone, purpose, and correct spelling and grammar. Writing a strong topic sentences is another critical part in writing a cohesive essay. 

Without a strong topic sentence, you risk losing your reader and perhaps part of your grade. If it’s a college admissions essay, then you need it to be as strong as possible to back up your application. Learn about what steps you should take to write a strong topic sentence.

What Is a Topic Sentence? 

People often confuse a topic sentence with a thesis statement. A thesis statement is typically at the end of your opening paragraph, that dictates the main argument you’ll be making in your essay. 

Throughout your essay, you’ll have multiple topic sentences, as each paragraph should start off with one. This beginning sentence is used to direct the topic of the paragraph and outline the flow of the following sentences. It’s used to help guide your reader and to continue to keep them hooked on your overall essay. Without topic sentences, your essay will be unorganized, lack transitions, and sound very choppy. To write a good topic sentence, there are several steps to take.

Writing a Good Topic Sentence: 5 Steps

Step 1: decide what you’re going to write about..

When you see the essay prompt, you’ll have some time to think through what you want to say and why. You have to decide if it’s a persuasive essay, informative, narrative, or descriptive. Determine your purpose for writing the essay after reading through the prompt. Whether it’s an assignment for school or if it’s to get into college, you need to make sure you have that purpose clearly outlined. 

Step 2: Create a thesis statement.

One of the first things you need to do is create a thesis statement. This is typically a sentence with three points that you’ll back up throughout your essay. 

For example: The Office became a cultural phenomenon because it spurred the careers of many of today’s successful movie stars, it talked about situations that most American workers can relate to, and even 15 years later, offers funny, relevant content that helps to break down prejudices. 

You then use that thesis statement to create an essay around the points you want to make. 

Step 3: Make your essay outline.

Once you have the points you want to make within your thesis statement hammered out, make an outline for your essay. This is where you’ll start to create your topic sentence for each paragraph. You want to clearly state the main idea of that paragraph in the very first sentence. From there, you back up that main idea with facts and reputable sources. Make sure your topic sentence is clear, but does not just announce your topic. 

For example, do not write something like: “In this paragraph, I will discuss why it’s bad that poachers are killing giraffes.”

Instead, write something that clearly states your idea with a reasonable opinion and that gives direction to the paragraph: “Giraffes are a key part of the African ecosystem, so it’s important to enforce regulations against the poachers who are killing them for their body parts.” 

You’d then follow that up with reasons why giraffes are a key part of the African ecosystem and how poachers are destroying their population.

Step 4: Begin writing your essay.

Once you have your thesis statement and you’ve created an outline with supporting paragraphs and their topic sentences, you can begin writing your essay. It’s important to make that outline before just jumping in–a disorganized essay can spell disaster for you as you continue to write, and could result in a poor grade. Many times, teachers will even require you to turn in your outline as part of your overall essay grade. 

Step 5: Proofread and check your resources.

After you’ve written the essay, go back through it with a fine tooth comb. Read through each topic sentence and the paragraphs that follow to ensure that you’ve written clear, solid topic sentences throughout and that the paragraphs with them make sense. During the proofreading phase, you also need to recheck the sources you’re using. Make sure each source is reputable. In other words, do not use sites like Wikipedia where anyone can go in and edit an article to add misinformation. Use sites that:

  • Are actual reputable news sources, such as the New York Times , CNN, CBS News
  • Have domain names that end in .edu or .gov
  • Come from an encyclopedia, such as Encyclopedia Britannica

Using sites that are not reputable could jeopardize the validity of your argument. 

topic sentence for definition essay

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Now that you know the steps to set yourself up for success when writing a topic sentence, there are certain elements that go into a quality first sentence. Always make sure that your topic sentence is the first sentence of a paragraph. You don’t want to make your reader hunt for the point you’re trying to make. Check out some key elements of a good topic sentence:

Make sure your topic sentence isn’t too vague.

You need a topic sentence that has some specifics to it. It also needs to hook in your reader in some way with an opinion. A vague sentence makes it harder to write a paragraph that can clearly backs up your thoughts. For example:

DON’T: “In Pride and Prejudice, Mr. Bingley seems like a nice guy.”

DO: “When Mr. Bingley is first introduced, he comes across as a kind person because he speaks to everyone and doesn’t immediately pass judgment.”

Choose a reasonable opinion.

Your topic sentence should clearly outline whatever point you’re trying to make in the paragraph, but you want to pick a reasonable opinion that you can easily reinforce with facts and statistics. Here’s an example of what you should and should not do:

DON’T: “It’s obvious that Mr. Bingley was a total loser with no backbone.”

DO: “Mr. Bingley could have shown more confidence in his choices and stood up to Mr. Darcy when he found himself in love with Jane Bennet.”

You can then back that up with facts, saying that he was a wealthy Englishman and thus one of the key players in society at the time, which should have given him more confidence. If he’d been more confident, perhaps he would not have left and devastated Jane.

Use your topic sentence as a transition.

Along with telling the reader the point of your next paragraph, your topic sentence should also serve as a transition from the previous paragraph. Without a transition, the essay can feel like it’s choppy and disjointed. For example:

DON’T: “Mr. Bingley is a good man and here’s why.”

DO: “Although Mr. Bingley did break Jane’s heart by leaving, he ended up redeeming himself by returning to Netherfield Hall.”

Keep your topic sentence short.

A long, drawn-out topic sentence can risk losing your reader. Many times, it’s hard to determine the point of a sentence when it goes on for too long. You want a clear, concise sentence that draws in the reader but also leaves some room for you to expand on it in the following paragraph.

DON’T: “Throughout the novel of Pride and Prejudice, Mr. Bingley was often quite different from Mr. Darcy as he would treat all people in a friendly manner, considering them all his friends and acquaintances, even agreeing to throw a ball after Elizabeth’s sisters rudely demanded he do so and was gracious to Mr. and Mrs. Bennet as well despite their manners.”

DO: “Overall, Mr. Bingley served as a foil to Mr. Darcy throughout the story by treating everyone around him equally with dignity and grace.”

Writing an essay can be overwhelming at times, but so long as you avoid some of these common pitfalls, it can be easier to get it done on time. 

Don’t wait until the last minute.

If your teacher assigns you an essay or tells you that you have an essay test coming up, don’t wait until the day before to do anything about it. You have to plan or study and you need to give yourself time to do that. If you know it takes you a while to write something, then start planning it as soon as you get the assignment.

Don’t forget to write an outline.

Along with planning, make sure you have that outline written up and planned out well. It will serve as your guideline for writing the essay. Without it, you’ll face the risk of a disorganized essay that does not clearly illustrate your point.

Ask for help if you need it.

This may be the most important pitfall to avoid. If you get in over your head while writing, don’t be afraid to ask for help. Ask a friend to review the essay or ask your teacher for guidance. 

Where to Get Your Essay Edited for Free

Once you’ve finished your essay, you may want additional input. There are tools out there to help, but CollegeVine’s free peer essay review tool can provide you with actionable feedback from students just like you. CollegeVine’s tool has helped many students and may be able to help you, too! Asking for peer feedback can help to refine your essay and it never hurts to have an extra set of eyes read through what you’ve written. Check out the free tool today!

topic sentence for definition essay

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topic sentence for definition essay

Writing Topic Sentences — Purpose, Structure, and Examples

What is a topic sentence.

A topic sentence in academic writing identifies how a body paragraph relates to the overall purpose of an essay stated in the thesis statement . Topic sentences are usually at the beginning of a paragraph and identify the paragraph’s controlling idea.

While an essay’s thesis statement identifies the point of the essay in its entirety, the topic sentence has a much narrower focus, as it relates only to the paragraph in which it is located.

Topic sentence vs. thesis statement

What is the purpose of a topic sentence?

The purpose of a topic sentence is to inform the reader of the main idea of the paragraph and how it connects to the overall objective of the essay. An effective topic sentence accomplishes one or more of the following:

Makes a claim

Supports other claims made in the paper

Identifies the purpose of the rest of the paragraph

Relates the paragraph to the purpose of the paper

Precedes information that defends a claim

Purposes of a topic sentence

How to write a topic sentence

To write a topic sentence, incorporate the following guidelines:

Determine the thesis of the essay.

Identify the main supports that help prove the thesis.

Use each main support to structure a topic sentence for each paragraph.

Compose a sentence that answers the following questions:

What will the paragraph prove?

How does the paragraph connect to the thesis?

How to write a topic sentence

Where is the topic sentence in a paragraph?

Topic sentences can be placed at the beginning or end of a paragraph.

Although it does not need to be the first sentence, the topic sentence should be placed at the beginning of the paragraph so the reader can quickly identify the purpose of the paragraph.

While not a common placement for a topic sentence, some writers use topic sentences at the end of a paragraph. Writers who choose this method want the reader to deduce the main point of the paragraph by presenting the evidence first.

Topic sentence examples

The following list identifies topic sentences based on the provided thesis statements for five-paragraph essays:

Thesis Statement: Capital punishment should be banned because it is inhumane, unconstitutional, and ineffective at deterring crime.

Support Paragraph 1 Topic Sentence: The inhumane nature of the death penalty proves it should be abolished.

Support Paragraph 2 Topic Sentence: Capital punishment should be outlawed because it violates the Constitution.

Support Paragraph 3 Topic Sentence: Because the death penalty does not effectively deter criminal behavior, states should not continue to use it.

Thesis Statement: College athletes should be financially compensated because they sacrifice their minds and bodies, cannot hold an outside job, and increase the school’s revenue.

Support Paragraph 1 Topic Sentence: Student athletes should be paid for their performance because of sports’ impact on their minds and bodies.

Support Paragraph 2 Topic Sentence: Because most college athletes cannot play their sport and hold a job, colleges should give them a living wage.

Support Paragraph 3 Topic Sentence: Student-athletes’ ability to increase their college’s revenue proves they should be awarded financial compensation.

Example topic sentences

Thesis Statement: Using alternative energy sources can help lessen the impact of global climate change.

Support Paragraph 1 Topic Sentence: Through the widespread use of solar power, countries can limit the environmental impact of other energy sources.

Support Paragraph 2 Topic Sentence: Utilizing more wind turbines as a power source can help mitigate the effects of climate change.

Support Paragraph 3 Topic Sentence: Using geothermal power will effectively decrease the world's reliance on fossil fuels.

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Using Topic Sentences

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What is a topic sentence?

A topic sentence states the main point of a paragraph: it serves as a mini-thesis for the paragraph. You might think of it as a signpost for your readers—or a headline—something that alerts them to the most important, interpretive points in your essay. When read in sequence, your essay’s topic sentences will provide a sketch of the essay’s argument. Thus topics sentences help protect your readers from confusion by guiding them through the argument. But topic sentences can also help you to improve your essay by making it easier for you to recognize gaps or weaknesses in your argument.

Where do topic sentences go?

Topic sentences usually appear at the very beginning of paragraphs. In the following example from Anatomy of Criticism , Northrop Frye establishes the figure of the tragic hero as someone more than human, but less than divine. He backs up his claim with examples of characters from literature, religion and mythology whose tragic stature is a function of their ability to mediate between their fellow human beings and a power that transcends the merely human:

The tragic hero is typically on top of the wheel of fortune, half-way between human society on the ground and the something greater in the sky. Prometheus, Adam, and Christ hang between heaven and earth, between a world of paradisal freedom and a world of bondage. Tragic heroes are so much the highest points in their human landscape that they seem the inevitable conductors of the power about them, great trees more likely to be struck by lightning than a clump of grass. Conductors may of course be instruments as well as victims of the divine lightning: Milton’s Samson destroys the Philistine temple with himself, and Hamlet nearly exterminates the Danish court in his own fall.

The structure of Frye’s paragraph is simple yet powerful: the topic sentence makes an abstract point, and the rest of the paragraph elaborates on that point using concrete examples as evidence.

Does a topic sentence have to be at the beginning of a paragraph?

No, though this is usually the most logical place for it. Sometimes a transitional sentence or two will come before a topic sentence:

We found in comedy that the term bomolochos or buffoon need not be restricted to farce, but could be extended to cover comic characters who are primarily entertainers, with the function of increasing or focusing the comic mood. The corresponding contrasting type is the suppliant, the character, often female, who presents a picture of unmitigated helplessness and destitution. Such a figure is pathetic, and pathos, though it seems a gentler and more relaxed mood than tragedy, is even more terrifying. Its basis is the exclusion of an individual from the group; hence it attacks the deepest fear in ourselves that we possess—a fear much deeper than the relatively cosy and sociable bogey of hell. In the suppliant pity and terror are brought to the highest possible pitch of intensity, and the awful consequences of rejecting the suppliant for all concerned is a central theme of Greek tragedy.

The context for this passage is an extended discussion of the characteristics of tragedy. In this paragraph, Frye begins by drawing a parallel between the figure of the buffoon in comedy and that of the suppliant in tragedy. His discussion of the buffoon occurred in a earlier section of the chapter, a section devoted to comedy. The first sentence of the current paragraph is transitional: it prepares the way for the topic sentence. The delayed topic sentence contributes to the coherence of Frye’s discussion by drawing an explicit connection between key ideas in the book. In essays, the connection is usually between the last paragraph and the current one.

Sometimes writers save a topic sentence for the end of a paragraph. You may, for example, occasionally find that giving away your point at the beginning of a paragraph does not allow you to build your argument toward an effective climax.

How do I come up with a topic sentence? And what makes a good one?

Ask yourself what’s going on in your paragraph. Why have you chosen to include the information you have? Why is the paragraph important in the context of your argument? What point are you trying to make?

Relating your topic sentences to your thesis can help strengthen the coherence of your essay. If you include a thesis statement in your introduction, then think of incorporating a keyword from that statement into the topic sentence. But you need not be overly explicit when you echo the thesis statement. Better to be subtle rather than heavy-handed. Do not forget that your topic sentence should do more than just establish a connection between your paragraph and your thesis. Use a topic sentence to show how your paragraph contributes to the development of your argument by moving it that one extra step forward. If your topic sentence merely restates your thesis, then either your paragraph is redundant or your topic sentence needs to be reformulated. If several of your topic sentences restate your thesis, even if they do so in different words, then your essay is probably repetitive.

Does every paragraph need one?

No, but most do. Sometimes a paragraph helps to develop the same point as in the previous paragraph, and so a new topic sentence would be redundant. And sometimes the evidence in your paragraph makes your point so effectively that your topic sentence can remain implicit. But if you are in doubt, it’s best to use one.

7ESL

Topic Sentence: Definition, Examples and Useful Tips for Writing A Topic Sentence

When writing, there are many aspects which we need to take into consideration. One such aspect is the topic sentence, but how do we use this? In this article, we are looking at what the topic sentence is and how it is used within a piece of writing . We are also going to be looking at a variety of examples to give us a better understanding of its function.

Topic Sentence

What is a topic sentence.

Some might say that the topic sentence is one of the most important aspects and definitely the most vital sentence within a paragraph . In some cases, you might hear the topic sentence is referred to as the focus sentence but these are essentially the same thing.

A topic sentence is used to summarise all of the information within a paragraph. When writing in a more formal style, the topic sentence will usually feature at the beginning of the paragraph, although this is not a set rule.

What Is A Topic Sentence Used For?

A writer will use a topic sentence as a way of explaining to the audience what the paragraph is going to be about. Any sentences which appear after the topic sentence should give further information about the topic sentence or should give facts about it in order to prove the claim that it has made. The following sentences might also serve as a way to further describe the topic sentence by giving more details about it. For example, if the topic sentence is about animals kept as domestic pets, the following sentences should relate back to that subject.

On top of this, the topic sentence should always refer back to the thesis statement which was made at the beginning of the essay . You can imagine the thesis statement as being a map which directs the reader as to where you are going with the information and how it is being treated.

Controlling Ideas

When writing a topic sentence, each one should feature a controlling idea. This will serve as an indicator as to where the rest of the paragraph will go and what will be discussed.

Topic Sentences Examples

Now that we are clear on what a topic sentence is, we are going to take a look at some examples to further grow our understanding of them.

  • ‘There are a lot of reasons why (name of a city) is the most polluted in the world.’

The controlling topic here is that there are ‘a lot of reasons’ and the topic is that a certain town is the most polluted.

  • ‘In order to be an effective manager, one must have certain qualities.’

The topic of this sentence is being an effective manager and it has a controlling idea of ‘certain qualities.’

  • ‘There are a lot of factors which contribute to global warming .’

This sentence has a topic of global warming whilst the controlling idea is related to ‘factors which contribute.’

  • ‘We can improve teen pregnancy rates by improving education.’

The topic of this sentence in that teen pregnancy can be improved and the controlling idea is ‘improving education.’

How To Write A Topic Sentence

When it comes to writing a good topic sentence, there are many things that you should take into consideration before you put pen to paper. We are now going to look at the various steps you should take in order to write an effective and strong topic sentence.

Write Your Thesis Statement

Before you can write a topic sentence, you must have a thesis statement. This should be strong and be effective in summing up the purpose of the essay as well as the main argument.

Outline Your Essay And Draft Out The Topic Sentences

The next step is to create your essay outline, this will give your essay structure and will allow you to detail what is going to be discussed in each paragraph. You will also make note of what data and evidence will be included in each of the paragraphs.

This is the point where you can play with words and draft up some topic sentences for each of your paragraphs. A topic sentence needs to be much more specific than your thesis statement but it should relate clearly to it.

Expand With Some Evidence

The remaining sentences within your paragraph should logically flow from the original topic sentence. They should be used to expand on what has been said in the topic sentence. This will not only make your workflow but will also ensure that each paragraph remains focused and relevant to the topic sentence. You should give some evidence to support your topic sentence.

Revise The Topic Sentences

What your topic sentence looks like to begin with may not be how it ends up in the final draft and that is OK. It is very important that you look over and edit each topic sentence within the essay as you go along. This will ensure that they remain relevant to the content of your paragraphs.

When making the final edits for your topic sentences, you should ensure that they are clear enough to allow the reader to know what the paragraph is going to be about but also not so clear that they detail everything you wish to talk about within that paragraph.

Transitions

Your topic sentence will sometimes serve as a transition between your paragraphs and in this case, they may do one of the following things:

  • Compare and contrast
  • Emphasise or expand

A topic sentence is one which appears, usually (but not always) at the beginning of each paragraph of an essay. The topic sentence is used to layout the ideas and arguments that will be covered within the paragraph and should be carefully planned out to ensure that they are clear enough to give the reader an idea of what will be discussed but not to give away too much about the content of the paragraph. Your topic sentence may serve one of many purposes including summarising and comparing.

Topic Sentence Infographic

Topic Sentence: Definition, Examples and Useful Tips for Writing A Topic Sentence

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Topic Sentences

Topic sentence definition.

decorative image

Like the thesis, topic sentences themselves have topics and angles. The topic may be the same as the thesis’ topic, but the angle differs depending on the part of the thesis angle the topic sentence is offering. Think of topic sentences in this way: The thesis sentence offers the main idea or insight for the whole essay; a topic sentence offers the main idea or insight for a section of the essay. To use another metaphor, a thesis sentence illuminates the whole space; a topic sentence illuminates one portion of the space.

Thesis Sentence

chandelier with many small lights

Topic Sentence

row of lightbulbs with only one lit

Here’s an example

Thesis sentence :   Trends in home lighting change as aesthetic values respond to social experience; this is most noticeable if you compare lighting trends of the 1960s, 1990s, and today.

Topic Sentence : Lighting in the 1960s was ebullient, in-your-face lighting, with big glass globes and colorful “mod” desk lamps, characterizing both the optimism and rebellion of the decade.

Topic Sentence :   1990s lighting trends focused on both technology, reflecting the new importance of technical advances during that decade, and ornate metallic accents, reflecting wealth and stability, as seen in the trends for track lighting and brass lamps and chandeliers.

Topic Sentence : Today’s lighting trends focus on cleaner lines and softer metallics, characterizing a need for simplicity and calm in an increasingly complex and anxious world.

sign with one arrow pointing right and the other pointing left

For example, consider the following topic sentence and supporting paragraph from an essay whose thesis deals (humorously) with ways in which fast-food chains make profits.

Thesis :   Fun can be all-consuming, and we’re fond of consuming “fun.”  Fast-food chains are known for clowning around, adding a dollop for a dollar, including special “forget sauce” in their meals, and playing games with portions, all of which create profits as hefty as our waistlines may become.

Topic sentence and supporting paragraph :

Many fast-food chains make their profits from adding a special ingredient called “forget sauce” to their foods. ( This topic sentence extracts one of the ideas from the thesis.  It also controls the paragraph that follows, so that all sentences in the paragraph or unit of support must relate in some way to fast food, profit, and “forget sauce.”) Made largely from edible oil products, this condiment is never listed on the menu. ( This sentence fits in with the topic sentence because it is a description of the composition of “forget sauce.” ) In addition, this well-kept industry secret is the reason why ingredients are never listed on the packaging of victuals sold by these restaurants. ( The transitional phrase “In addition” relates the composition of “forget sauce” to secret fast-food industry practices. ) “Forget sauce” has a chemical property which causes temporary amnesia in consumers. ( This sentence states the short-term effect on consumers. ) After spending too much money on barely edible food bereft of any nutritional value, most consumers swear they will never repeat such a disagreeable experience. Within a short period, however, the chemical in “forget sauce” takes effect, and they can be depended upon to return and spend, older but no wiser. ( This sentence describes its longer-term effects and relates back to the thesis sentence, as it discusses profits made from “forget sauce.”)

The following brief video provides a simple way of explaining an important concept about topic sentences, that they link supporting ideas and examples to the thesis throughout an essay and create a logical flow of ideas within an essay.

Note: The content in this video is presented visually. You may listen to this video with audio description .

  • Topic Sentence Definition. Revision and adaptation of the page Writing Topic Sentences at https://courses.lumenlearning.com/englishcomp21xmaster/chapter/read-writing-topic-sentences/ which is a revision and adaptation of Writing Topic Sentences at https://www.saylor.org/site/wp-content/uploads/2011/01/Writing-Topic-Sentences.pdf. Authored by : Susan Oaks. Provided by : Empire State College, SUNY OER Services. Project : College Writing. License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
  • Writing Topic Sentences. Provided by : Lumen Learning. Located at : https://courses.lumenlearning.com/englishcomp21xmaster/chapter/read-writing-topic-sentences/ . Project : English Composition 2. License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
  • Writing Topic Sentences. Authored by : Dorothy Turner. Provided by : Saylor Academy. Located at : http://www.saylor.org/site/wp-content/uploads/2011/01/Writing-Topic-Sentences.pdf . License : CC BY-NC-SA: Attribution-NonCommercial-ShareAlike
  • image of road signs. Authored by : Merio. Provided by : Pixabay. Located at : https://pixabay.com/en/a-buy-me-a-coffee-ad-advert-990314/ . License : CC0: No Rights Reserved
  • image of chandelier illuminating a whole space. Authored by : RondellMelling. Provided by : Pixabay. Located at : https://pixabay.com/en/light-chandelier-lighting-lamp-1773753/ . License : CC0: No Rights Reserved
  • image of row of light bulbs with only one lit. Authored by : ColiN00B. Provided by : Pixabay. Located at : https://pixabay.com/en/light-bulbs-light-bulb-light-energy-1125016/ . License : CC0: No Rights Reserved
  • image of road signs pointing opposite directions. Authored by : geralt. Provided by : Pixabay. Located at : https://pixabay.com/en/shield-directory-right-next-490808/ . License : CC0: No Rights Reserved
  • video Thesis Statements, Topic Sentences, and Conclusion. Authored by : Sam Tabbakh. Located at : https://www.youtube.com/watch?v=CS_uxp0vKqQ . License : Other . License Terms : Standard YouTube License
  • Literary Terms

Topic Sentence

I. what is a topic sentence.

A topic sentence in a paragraph is like the GPS in a car. It shows you (and others) where you are going and explains the point of the paragraph. Everything else is used as supporting details. The topic sentence contains two parts: the topic and a controlling idea. The topic is WHAT the paragraph is going to be about, and the controlling idea explains WHY the paragraph is being written. The topic sentence helps your reader understand the purpose of your paragraph.

II. Examples of a Topic Sentence

The purpose of your paragraph will be made clear in your topic sentence. The most common reasons for writing are to persuade, to inform, and to entertain. It is also possible that a sentence could do more than one of these.

You will often use a persuasive topic sentence when writing for school, such as in literary essays .

The character Pip in the novel Great Expectations learns the importance of loyalty through his        interactions with the convict Abel Magwitch.

An informative topic sentence is often found in scientific articles.

White blood cells help fight infections by attacking bacteria, viruses and germs that invade the         body.

Topic sentences that entertain are sometimes found in magazines or other less formal writing.

It’s not hard to raise a bad child if you follow these simple instructions.

III. Parts of a Topic Sentence

There are just two parts in a topic sentence, the topic and the controlling idea. The topic is WHAT the paragraph is about, and the controlling idea explains WHY you are writing the paragraph. In the examples below, the topic is in orange and the controlling idea is in green .

Joseph loves to spend time with his friends .

What/who is this paragraph about? Joseph. Why is this paragraph being written? To explain something that Joseph loves to do.

Disneyland is the happiest place on Earth .

What/who is this paragraph about? Disneyland. Why is it being written? To show why Disneyland is the happiest place on Earth.

IV. Placement of Topic Sentences

A. initial placement.

The most common place for a topic sentence is at the beginning of the paragraph because it explains what the paragraph is going to discuss. The initial placement helps the writer organize the paragraph and tells the reader what to expect right in the beginning.

The best things in life are free . Although most people work hard to buy a good home or a nice car, those are not the things that they care about the most. At the end of their lives, they don’t want to hug their cars, or the walls of their fine houses. They want to be surrounded by the people they care about and who care about them. Kindness is free. Love is free. Friendship is free (or at least it should be!). Of course it is important to make money to survive, but love is important to live happily.

b. Final Placement

Sometimes the topic sentence is at the end of the paragraph, especially when the paragraph is a narrative or a mysterious story. Placing it at the end creates suspense or sometimes works to tell the point of the story.

The wealthy man was dying. He called for his friends and family to be near him and placed a hand on each one’s shoulder. They cried because they would miss him, and he cried because he had no more time to share with them. The beautiful things that he’d purchased over the years held no meaning. He didn’t care about his diamonds or his yacht or his large home. He cared for his children and the love they shared. They were here with him now and held his hands. He was glad he’d learned the most important lesson in life: the best things in life are free .

c. Medial Placement

The last place, the least common place for a topic sentence, is in the middle of the paragraph. The medial topic sentence usually functions as a transition between two ideas or details.  This works when you want to show that there are two (sometimes opposite) points to an issue, but the one you are arguing, the second point, is stronger, more specific, or more important. This topic sentence is generally introduced with a transition signal.

You can’t survive on love alone. People need money for basic necessities: food, shelter and clothing. Without money, life would be uncomfortable and difficult. However, time and energy should not be completely spent on making money because the best things in life are free . Having fun with friends and family is more important and more satisfying than buying a new car or nice clothes. People provide warmth, affection, understanding, and most of all, love. Money can’t love you back, and it does not guarantee happiness. Some of the richest people in the world are miserable, while some of the poorest people in the world are happy because they have the simple joy of loving people in their lives.  

V. How to Write a Topic Sentence

A. the best way to write your topic sentence is to consider why you are writing the paragraph.

  • Decide on your reason for writing the paragraph
  • After you have figured that out, write down the important details you want to include and see what they all have in common.
  • Summarize the details into one sentence.

For example, if you want to write about your favorite movie, think about all the reasons that you like it. Is it funny? Exciting? Dramatic? Romantic? Be sure not to include too many things or else you will end up with an essay instead of a simple sentence. Once you have decided on your details, you are ready to write the topic sentence.

Here’s an example, the topic will be in orange and the controlling idea will be in green :

The best movie ever made was “Star Wars: the Force Awakens” because it was exciting and surprising .

An important point to remember is that the topic sentence should contain all relevant information that’s going to be in the paragraph. There should be no information about romance or comedy. It should only talk about what made the movie exciting.

b. Mistakes to Avoid

One of the biggest problems students face is keeping a paragraph or essay on topic. Sometimes they will write a good topic sentence but halfway through the paragraph, they think of another good idea and follow that. Without revision and editing, the topic sentence will not serve its purpose in the paragraph.

The best vacation I ever had was in Hawaii. The beaches were so beautiful and clean that swimming in them was like a dream . I especially loved the Waikiki beach. At night, there were free shows with dancers and live music. The music was so good that it made me want to dance. Dancing is my favorite thing to do in the world. When I was young, I studied ballet and tap dance. I’m thinking about taking it back up again. I might even study hip-hop!

The paragraph started out with Hawaii and end up with hip-hop dancing. You can see how the writer’s train of thought began to wander in the seventh sentence. With a different topic sentence, it would be possible to save this paragraph. Consider how different the direction would be with the following topic sentence.

The best vacation I ever had was in Hawaii. I especially loved the Waikiki beach. At night, there were free shows with dancers and live music. The music was so good that it made me want to dance and reminded me that dancing is my favorite activity in the world. In fact, when I was young, I studied ballet and tap dance. The dancing that I saw in Hawaii inspired me to get back into dancing . I might even study hip-hop!

With this new topic sentence, the second sentence would have to be eliminated or changed a bit. You can see how easy it is to get off-topic, but with a good topic sentence, and constant reference back to it, you are less likely to have that problem.

VI. So remember

  • A topic sentence needs to contain the topic of your paragraph and a controlling idea.
  • Everything in the paragraph should be connected to the topic sentence.
  • The placement of the topic sentence depends on the type of paragraph.

VII. Exercises

Each of the paragraphs in this exercise has three possible topic sentences following it. Choose the best one and make sure that it includes the main idea of the paragraph.

1. _____________________________________________. In fact, he usually shows up five minutes early everywhere he goes. Because he’s so considerate, he hates to keep people waiting. He also believes that being early creates a better expereince. One time, when we were going to a movie together, John arrived thirty minutes earlier just so he could get the best seats in the theatre. I’m glad to have such a punctual friend.

a. John loves going to the movies.

b. John is always on time.

c. John hates to be kept waiting.

2. _________________________________________. The place is never crowded, but the service is still terrible. It seems like the staff has better things to do than wait on customers. Once I waited ten minutes just to buy a slice of pizza, and I was the only person in the whole store! I recommend staying away from Billy Bob’s Pizzeria.

a. Billy Bob’s Pizzeria has the worst pizza.

b. Billy Bob’s Pizzeria is an unpopular place to eat.

c. Billy Bob’s Pizzeria has terrible customer service.

3. I walked slowly down the dark path, afraid of my own shadow. But the tug on the leash propelled me forward. Buck, my golden retriever, was determined to take the most deserted trails through the forest. I could hear unfamiliar noises on all sides and urged Buck to do his business quickly. Oh, why couldn’t he be toilet trained? That would be better for everyone! _____________________________________.

a. Buck is an inconsiderate dog.

b. I hate walking my dog at night.

c. The forest is a dangerous place to walk at night.

4. Generally speaking, zoos these days are losing popularity. Many people feel that it’s unfair to lock up wild animals to entertain humans. ________________________________ . Some zoos go to great lengths to build a good environment for its animals. The good zoos treat their animals well and provide opportunities for the public to learn about the natural world. The best zoos protect endangered species and raise awareness about animals and their habitats.

a. Zoos perform a valuable service to society and should be part of every person’s childhood memory.

b. Zoos are horrible places that should be shut down because it’s not humane to lock up wild animals.

c. Zoos that do their best to make a pleasant habitat for the animals can be a pleasant place to visit.

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  • Antonomasia
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  • Parallelism
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  • Polysyndeton
  • Protagonist
  • Red Herring
  • Rhetorical Device
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Topic Sentence

Every paragraph should include a topic sentence that identifies the main idea of the paragraph. A topic sentence also states the point the writer wishes to make about that subject. Generally, the topic sentence appears at the beginning of the paragraph. It is often the paragraph’s very first sentence. A paragraph’s topic sentence must be general enough to express the paragraph’s overall subject. However, it should be specific enough that the reader can understand the paragraph’s main subject and point.

  • The topic sentence should identify the main idea and point of the paragraph. To choose an appropriate topic sentence, read the paragraph and think about its main idea and point.
  • The supporting details in the paragraph (the sentences other than the topic sentence) will develop or explain the topic sentence. Read all the supporting details in the paragraph and think about the ideas they discuss.
  • The topic sentence should not be too general or too specific. When considering the options, look for a topic sentence that is general enough to show the paragraph’s main idea instead of just one of its details. The answer should be specific enough that the reader understands the main idea of the paragraph.

More About the Topic Sentence

A topic sentence is the most important sentence in a paragraph. Sometimes referred to as a focus sentence, the topic sentence helps organize the paragraph by summarizing the information in the paragraph. In academic writing, the topic sentence is usually the first sentence in a paragraph (although it does not have to be).

Purpose of the Topic Sentence

A topic sentence essentially tells readers about the rest of the paragraph. All sentences after it have to give more information about that sentence, prove it by offering facts about it, or describe it in more detail. For example, if the topic sentence concerns the types of endangered species that live in the ocean, then every sentence after that needs to expands on that subject.

Topic sentences also need to relate back to the thesis of the essay. The thesis statement is like a road map that will tell the reader or listener where you are going with this information or how you are treating it.

Topic Sentences and Controlling Ideas

Every topic sentence will have a topic and a controlling idea. The controlling idea shows the direction the paragraph will take.

Examples of a Topic Sentence

Topic Sentence: There are many reasons why pollution in ABC Town is the worst in the world.

The topic is "pollution in ABC Town is the worst in the world" and the controlling idea is "many reasons."

Topic Sentence: To be an effective CEO requires certain characteristics.

The topic is "To be an effective CEO" and the controlling idea is "certain characteristics."

Topic Sentence: There are many possible contributing factors to global warming.

The topic is "global warming" and the controlling idea is "contributing factors."

Topic Sentence: Fortune hunters encounter many difficulties when exploring a shipwreck.

The topic is "exploring a shipwreck" and the controlling idea is "many difficulties."

Topic Sentence: Dogs make wonderful pets because they help you to live longer.

The topic is "dogs make wonderful pets" and the controlling idea is "because they help you

to live longer."

Topic Sentence: Crime in poverty-stricken areas occurs because of a systemic discrimination.

The topic is "crime in poverty stricken areas" and the controlling idea is "systemic discrimination."

Topic Sentence: Teen pregnancy may be prevented by improved education.

The topic is "teen pregnancy may be prevented" and the controlling idea is "improved education."

Topic Sentence: Cooking requires a number of different skills.

The topic is "cooking" and the controlling idea is "many different skills."

Topic Sentence: It is important to be ready before buying a house.

The topic is "buying a house" and the controlling idea is “it is important to be ready."

Topic Sentence: Graduating from high school is important for many different reasons.

The topic is "graduating from high school" and the controlling idea is "many different reasons."

Topic Sentence: Having a first child is difficult because of the significant adjustments in your life.

The topic is "having a first child" and the controlling idea is "significant adjustments in your life."

Topic Sentence: Remodeling a kitchen successfully requires research and a good eye.

The topic is "remodeling a kitchen" and the controlling idea is "requires research and a good eye."

Topic Sentence Exercise

Write a topic sentence for the following paragraph. During the 1990s, I really enjoyed watching Friends on television every Thursday night. I really wanted Rachel’s haircut—I think every girl wanted Rachel’s haircut back then! Rachel’s haircut went really well with the Guess Jeans that were so popular in the 1990s. I remember all the advertisements for Guess and Calvin Klein Jeans that were in each month’s Sassy magazine. I do not think Sassy magazine exists anymore, but it was one of the most popular magazines for young women in the 1990s.

Topic Sentences Exercise Answer

The bold sentence is one possible topic sentence for the example paragraph.

Note: This is just one possible topic sentence—you may have thought of others that are also appropriate.

Thinking about the 1990s brings back fond memories for me about fashion and popular culture. During the 1990s, I really enjoyed watching Friends on television every Thursday night. I really wanted Rachel’s haircut—I think every girl wanted Rachel’s haircut back then! Rachel’s haircut went really well with the Guess Jeans that were so popular in the 1990s. I remember all the advertisements for Guess and Calvin Klein Jeans that were in each month’s Sassy magazine. I do not think Sassy magazine exists anymore, but it was one of the most popular magazines for young women in the 1990s.

*Source: Purdue OWL

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Topic Sentences

What is a topic sentence.

  • A statement at the beginning of each body paragraph
  • Indicates the topic of the entire paragraph
  • In a short essay, it reflects one of the main points of the thesis statement (link to thesis statement handout)

Main Point + Details

An effective topic sentence expands on a main thesis point by including details and explanation. It has two organizational purposes:

  • Relate back to the thesis statement
  • Summarize the paragraph

An effective topic sentence is like a mini-thesis statement for each paragraph.

Example Thesis: Health-conscious individuals should consider substituting strawberries for desserts because strawberries are healthy , sweet , and versatile .   Topic of Body Paragraph 1: Strawberries are healthy   Topic of Body Paragraph 2: Strawberries are sweet   Topic of Body Paragraph 3: Strawberries are versatile

Topic Sentence for Body Paragraph 1: Strawberries are a healthy substitute for desserts because they have a much lower carbohydrate count and are rich in nutrients and fiber.  

Notice that the topic sentence includes the first main point of the thesis statement, but it expands on the idea with further details. Now the paragraph can elaborate further on these details, and it should relate back to the main argument – that strawberries can be substituted for desserts.

The second body paragraph would start with a topic sentence about the second main point: strawberries are sweet . The third body paragraph would start with a topic sentence about the third main point: strawberries are versatile .

Longer Essays

Not all papers will have a three point thesis statement. If this is the case, the topic sentence may not contain a word-for-word point stated in the thesis statement.

Example Thesis statement: The literary techniques used by Leo Tolstoy in The Death of Ivan Ilych unveil an extraordinary sense of depth within the novella that is imperative to truly understanding Tolstoy’s ideas.

Example Topic Sentence: When Leo Tolstoy employs the technique of symbolism, inanimate objects like Ivan’s golden pocket watch and the drapes on his windows convey hidden meanings that further clarify important themes in the story.

From DBU Writing Center  http://www3.dbu.edu/uwc/documents/TopicSentencesAug15.pdf

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Topic Sentence Definition

Topic sentences are special sentences that serve as guideposts to the writer and reader; they help shape the essay and move it along from idea to idea.

If you have already gathered information and developed some support for a thesis, you may find that your support falls into groups or categories. A rule of thumb is that you can develop a topic sentence for each category to help shape that information and to cue your reading audience in to a change in supporting idea.

For example, let's say that the following sentence is your working thesis:

Adult students returning to college face time, study, emotional, and family problems.

You developed that thesis because you had groups of information on time, study, emotional, and family problems. As you're shaping the essay, then, you could develop these topic sentences to help shape information and direct your reading audience to a change in support:

  • Adult students returning to college face time problems because they have to juggle work, family, and school.
  • Adult students returning to college face study problems because they often have to re-learn study skills, after not having used them for ten years or more.
  • Adult students face family problems when they change family roles and structures as a result of carving out time for themselves.
  • Adult students also face emotional problems when they question their ability to succeed.

An important point: A topic sentence essentially extracts the various ideas embedded in the thesis and creates a "mini-thesis" for each of those ideas. Each of the sample topic sentences above has a topic (adult students returning to college--the same as the topic in the thesis) and an angle (which differs depending on the idea but which extracts one idea from the thesis). Topic sentences help you break down the ideas in the thesis and present them one by one, each in its turn, so that you create a logical shape (a conceptual structure) for the ideas in the essay.

One way to create topic sentences is to identify the implied question in the thesis; the topic sentences will have to answer that question directly.

  • If it's a "why?" question, then you know that each topic sentence will have to provide another reason why.
  • If it's a "what?" question, then you know that each topic sentence will have to provide another characteristic of something.
  • If it's a "how?" question, then you know that each topic sentence will have to offer another step or stage of something.

For example:

Thesis: Adult students should not fear returning to college. (a "why?" question is implied)

Topic Sentence: Adults shouldn't fear returning to college because they have organizational skills that help them in school.

Topic Sentence: Statistics show that adults generally are more successful than younger college students, despite the obstacles they face.

Topic Sentence: Adults are usually successful, and therefore shouldn't fear returning to college, because they generally value learning, which makes them work harder and become more successful learners.

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How To Write An Essay

Topic Sentence

Barbara P

Learn How to Write a Topic Sentence that Stands Out

Published on: Jan 13, 2021

Last updated on: Jan 30, 2024

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As a student, you have probably heard the term "topic sentence" thrown around a lot in your English or writing classes. But do you really understand what it means and how important it is for effective writing?

Well, many students struggle with crafting strong topic sentences that effectively convey their ideas. They may find themselves unsure of how to make their topic sentence stand out in a sea of other ideas.

In this blog, we will explore the art of writing a great topic sentence, with examples and tips to help you enhance your skills. By the end of this blog, you will have a better understanding of how to craft a topic sentence that will make your writing clear, concise, and engaging.

So let’s get started!

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What is a Topic Sentence?

A topic sentence is the first sentence of a paragraph in an essay that introduces the main idea or topic of that paragraph. It serves as a roadmap for the reader, letting them know what to expect in the upcoming paragraph. 

Purpose of Topic Sentence

The purpose of a topic sentence is to clearly and concisely convey the main point of the paragraph to the reader. 

It helps to guide the reader through the essay, making it easier for them to follow the overall argument or narrative.

Features of a Good Topic Sentence

A good topic sentence has a few key features. Let’s take a look: 

  • Expresses the main idea of the paragraph or essay clearly and concisely.
  • Is specific and focused , avoiding vague or overly general statements.
  • Introduces the main point and is typically located at the beginning of the paragraph or essay.
  • Presents a claim or position that is arguable or debatable, which the rest of the paragraph or essay will support.
  • Can be a complete sentence or a concise phrase that effectively conveys the main idea.
  • Is relevant to the thesis statement and overall topic of the essay.
  • Engages the reader by creating interest and highlighting the significance of the topic.
  • Is well-written and avoids grammar and spelling errors.
  • Provides a roadmap for the rest of the paragraph or essay by indicating what will be covered.
  • Encourages coherence and unity in the writing by linking the paragraph or essay to the broader topic.

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Types of Topic Sentences

There are several different types of topic sentences that can be used in writing to introduce the reader through a paragraph or essay.

Simple Statement Topic Sentence This is the most common type of topic sentence, which straightforwardly states the main point or idea of the paragraph or essay.

Example: The rise of social media has revolutionized the way people communicate with each other.

Complex Topic Sentence This type of topic sentence is more nuanced and may require some explanation or elaboration to fully understand.

Example: While the rise of social media has had many positive effects on communication, it has also led to concerns about privacy and online harassment.

Pivot Topic Sentence A pivot topic sentence begins by connecting the current paragraph or idea to the previous one, before pivoting to introduce a new point or idea.

Example: Building on the idea of social media's impact on communication, it is important to consider how it has also affected business and marketing strategies.

Question Topic Sentence A question topic sentence poses a question that the rest of the paragraph or essay will answer or explore.

Example: How has social media changed the way businesses interact with customers and advertise their products?

Command Topic Sentence This type of topic sentence gives a directive or instruction, often used in persuasive or argumentative essays.

Example: Support local businesses by shopping at independently owned stores instead of large chains.

How to Write a Topic Sentence?

Here are a few instructions to help you write a good topic sentence. 

Step#1 Clearly State The Main Idea

A topic sentence is the first paragraph of the paragraph. It must clearly explain the particular subject that would be discussed in the paragraph. This should be stated in very clear language so that the reader can easily understand the idea. 

Also, it should include a bit of your personal opinion and also the main idea. 

Step#2 Hook Your Reader

Grab your reader's attention with an intriguing topic sentence. It would excite and make the reader curious about the content and convince them to read the particular part. 

Look out for some amazing hook examples and see what fits your essay type. 

Use a meaningful and relevant question or a fact as a topic sentence of the paragraph. Make sure that you have identified your audience and are developing everything accordingly. 

Step#3 Keep It Short and Precise

The paragraph topic sentence must be expressive enough that a reader understands your point of view effortlessly. This is only possible if you keep everything to the point, short, and meaningful. 

Choose the words in such a way that they help you express your idea in an ideal way. Avoid using complex sentences and use independent clauses.  

A topic sentence acts as a link between a paragraph and the main thesis statement. It should be specific and connected to the overall essay. Keeping it short and precise helps maintain the paragraph's flow and its relevance to the rest of the writing.

Step#4 Give A Reasonable Opinion

The body paragraph explains a topic sentence. This is why it is important that you should write this sentence in such a way that it can be explained in the paragraph.  If you are mentioning a fact in the topic statement, make sure that you have authentic evidence to support it. 

While the topic sentence is an integral part of the paragraph, it should stand out and possess a distinctiveness that sets it apart from the other sentences. This can be achieved by employing transition words and establishing connections between sentences.

Step#5 Use The Topic Sentence As A Transition

The topic sentences that serve as transition sentences can be considered a guide for the readers. This way, they can help the reader to move through the essay in a flow. 

Write this sentence in such a way that it creates a gateway between the previous paragraph and the rest of the essay. Moreover, it will also help keep the essay organized, and the reader understands the point of a paragraph.

Step#6 Look For Some Good Examples

Examples can help you learn a thing in a better way. If you are new to writing topic sentences, it can help to look at some examples. Find some great examples of topic sentences relevant to your essay topic.

Difference Between Topic Sentence and Thesis Sentence

Here's a table outlining the differences between a topic sentence and a thesis statement:

A sentence that introduces the main idea or topic of a paragraphA statement that presents the main argument or claim of an essay or research paper

Typically found at the beginning of a paragraphTypically found at the end of an introduction

Limited to one paragraphSpans the entire essay or research paper

Introduces the main idea of a paragraph and connects it to the thesis statementPresents the main argument or claim of an essay and provides a roadmap for the reader

Helps to organize the content of the paragraph and keeps the writer focused on the main pointHelps to organize the content of the entire essay or research paper and guides the reader through the argument

Good Topic Sentence Examples

Here are ten examples of good topic sentences:

  •  "Despite the advancements in technology, traditional forms of communication are still essential in today's society."
  • "The theme of power is prevalent throughout Shakespeare's play, Macbeth."
  • "In recent years, there has been a growing concern over the impact of climate change on our planet."
  • "The legalization of marijuana has been a topic of debate for many years." "Education is the key to success in life."
  • "The rise of social media has greatly impacted the way we communicate with one another."
  • "The effects of childhood trauma can have a lasting impact on mental health."
  • "The concept of justice is explored in depth in Harper Lee's To Kill a Mockingbird."
  • "Eating a balanced diet is crucial for maintaining good health."
  • "The Industrial Revolution had a profound effect on the world as we know it today."

The Bottom Line!

An opening sentence is crucial to grab your reader's attention and set the tone for your piece of writing. The topic sentence introduces the controlling idea and acts as an important sentence in the essay outline. 

Effective topic sentences are necessary for a well-structured and organized essay. It's an integral part of the writing process that should not be overlooked. 

Make sure to spend time crafting a compelling topic sentence that clearly conveys your main point and guides your readers throughout your essay. You can even take ideas from an AI essay generator to get started.

However, if you find yourself struggling to write a good opening sentence, don't worry! CollegeEssay.org is here to help you with all your writing needs. We have the best online essay writing service providing top-quality essays that are sure to impress your professors.

So, why wait? Contact our essay writing service now and take the first step toward academic success!

Frequently Asked Questions

How long is a topic sentence.

A topic sentence can be multiple sentences long. The first sets the context for your ideas, while the second provides more depth on what you are saying beyond just stating it outright.

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Frequently asked questions

What is a topic sentence.

A topic sentence is a sentence that expresses the main point of a paragraph . Everything else in the paragraph should relate to the topic sentence.

Frequently asked questions: Writing an essay

For a stronger conclusion paragraph, avoid including:

  • Important evidence or analysis that wasn’t mentioned in the main body
  • Generic concluding phrases (e.g. “In conclusion…”)
  • Weak statements that undermine your argument (e.g. “There are good points on both sides of this issue.”)

Your conclusion should leave the reader with a strong, decisive impression of your work.

Your essay’s conclusion should contain:

  • A rephrased version of your overall thesis
  • A brief review of the key points you made in the main body
  • An indication of why your argument matters

The conclusion may also reflect on the broader implications of your argument, showing how your ideas could applied to other contexts or debates.

The conclusion paragraph of an essay is usually shorter than the introduction . As a rule, it shouldn’t take up more than 10–15% of the text.

An essay is a focused piece of writing that explains, argues, describes, or narrates.

In high school, you may have to write many different types of essays to develop your writing skills.

Academic essays at college level are usually argumentative : you develop a clear thesis about your topic and make a case for your position using evidence, analysis and interpretation.

The “hook” is the first sentence of your essay introduction . It should lead the reader into your essay, giving a sense of why it’s interesting.

To write a good hook, avoid overly broad statements or long, dense sentences. Try to start with something clear, concise and catchy that will spark your reader’s curiosity.

Your essay introduction should include three main things, in this order:

  • An opening hook to catch the reader’s attention.
  • Relevant background information that the reader needs to know.
  • A thesis statement that presents your main point or argument.

The length of each part depends on the length and complexity of your essay .

Let’s say you’re writing a five-paragraph  essay about the environmental impacts of dietary choices. Here are three examples of topic sentences you could use for each of the three body paragraphs :

  • Research has shown that the meat industry has severe environmental impacts.
  • However, many plant-based foods are also produced in environmentally damaging ways.
  • It’s important to consider not only what type of diet we eat, but where our food comes from and how it is produced.

Each of these sentences expresses one main idea – by listing them in order, we can see the overall structure of the essay at a glance. Each paragraph will expand on the topic sentence with relevant detail, evidence, and arguments.

The topic sentence usually comes at the very start of the paragraph .

However, sometimes you might start with a transition sentence to summarize what was discussed in previous paragraphs, followed by the topic sentence that expresses the focus of the current paragraph.

Topic sentences help keep your writing focused and guide the reader through your argument.

In an essay or paper , each paragraph should focus on a single idea. By stating the main idea in the topic sentence, you clarify what the paragraph is about for both yourself and your reader.

The thesis statement is essential in any academic essay or research paper for two main reasons:

  • It gives your writing direction and focus.
  • It gives the reader a concise summary of your main point.

Without a clear thesis statement, an essay can end up rambling and unfocused, leaving your reader unsure of exactly what you want to say.

The thesis statement should be placed at the end of your essay introduction .

Follow these four steps to come up with a thesis statement :

  • Ask a question about your topic .
  • Write your initial answer.
  • Develop your answer by including reasons.
  • Refine your answer, adding more detail and nuance.

A thesis statement is a sentence that sums up the central point of your paper or essay . Everything else you write should relate to this key idea.

An essay isn’t just a loose collection of facts and ideas. Instead, it should be centered on an overarching argument (summarized in your thesis statement ) that every part of the essay relates to.

The way you structure your essay is crucial to presenting your argument coherently. A well-structured essay helps your reader follow the logic of your ideas and understand your overall point.

The structure of an essay is divided into an introduction that presents your topic and thesis statement , a body containing your in-depth analysis and arguments, and a conclusion wrapping up your ideas.

The structure of the body is flexible, but you should always spend some time thinking about how you can organize your essay to best serve your ideas.

The vast majority of essays written at university are some sort of argumentative essay . Almost all academic writing involves building up an argument, though other types of essay might be assigned in composition classes.

Essays can present arguments about all kinds of different topics. For example:

  • In a literary analysis essay, you might make an argument for a specific interpretation of a text
  • In a history essay, you might present an argument for the importance of a particular event
  • In a politics essay, you might argue for the validity of a certain political theory

At high school and in composition classes at university, you’ll often be told to write a specific type of essay , but you might also just be given prompts.

Look for keywords in these prompts that suggest a certain approach: The word “explain” suggests you should write an expository essay , while the word “describe” implies a descriptive essay . An argumentative essay might be prompted with the word “assess” or “argue.”

In rhetorical analysis , a claim is something the author wants the audience to believe. A support is the evidence or appeal they use to convince the reader to believe the claim. A warrant is the (often implicit) assumption that links the support with the claim.

Logos appeals to the audience’s reason, building up logical arguments . Ethos appeals to the speaker’s status or authority, making the audience more likely to trust them. Pathos appeals to the emotions, trying to make the audience feel angry or sympathetic, for example.

Collectively, these three appeals are sometimes called the rhetorical triangle . They are central to rhetorical analysis , though a piece of rhetoric might not necessarily use all of them.

The term “text” in a rhetorical analysis essay refers to whatever object you’re analyzing. It’s frequently a piece of writing or a speech, but it doesn’t have to be. For example, you could also treat an advertisement or political cartoon as a text.

The goal of a rhetorical analysis is to explain the effect a piece of writing or oratory has on its audience, how successful it is, and the devices and appeals it uses to achieve its goals.

Unlike a standard argumentative essay , it’s less about taking a position on the arguments presented, and more about exploring how they are constructed.

You should try to follow your outline as you write your essay . However, if your ideas change or it becomes clear that your structure could be better, it’s okay to depart from your essay outline . Just make sure you know why you’re doing so.

If you have to hand in your essay outline , you may be given specific guidelines stating whether you have to use full sentences. If you’re not sure, ask your supervisor.

When writing an essay outline for yourself, the choice is yours. Some students find it helpful to write out their ideas in full sentences, while others prefer to summarize them in short phrases.

You will sometimes be asked to hand in an essay outline before you start writing your essay . Your supervisor wants to see that you have a clear idea of your structure so that writing will go smoothly.

Even when you do not have to hand it in, writing an essay outline is an important part of the writing process . It’s a good idea to write one (as informally as you like) to clarify your structure for yourself whenever you are working on an essay.

Comparisons in essays are generally structured in one of two ways:

  • The alternating method, where you compare your subjects side by side according to one specific aspect at a time.
  • The block method, where you cover each subject separately in its entirety.

It’s also possible to combine both methods, for example by writing a full paragraph on each of your topics and then a final paragraph contrasting the two according to a specific metric.

Your subjects might be very different or quite similar, but it’s important that there be meaningful grounds for comparison . You can probably describe many differences between a cat and a bicycle, but there isn’t really any connection between them to justify the comparison.

You’ll have to write a thesis statement explaining the central point you want to make in your essay , so be sure to know in advance what connects your subjects and makes them worth comparing.

Some essay prompts include the keywords “compare” and/or “contrast.” In these cases, an essay structured around comparing and contrasting is the appropriate response.

Comparing and contrasting is also a useful approach in all kinds of academic writing : You might compare different studies in a literature review , weigh up different arguments in an argumentative essay , or consider different theoretical approaches in a theoretical framework .

The key difference is that a narrative essay is designed to tell a complete story, while a descriptive essay is meant to convey an intense description of a particular place, object, or concept.

Narrative and descriptive essays both allow you to write more personally and creatively than other kinds of essays , and similar writing skills can apply to both.

If you’re not given a specific prompt for your descriptive essay , think about places and objects you know well, that you can think of interesting ways to describe, or that have strong personal significance for you.

The best kind of object for a descriptive essay is one specific enough that you can describe its particular features in detail—don’t choose something too vague or general.

If you’re not given much guidance on what your narrative essay should be about, consider the context and scope of the assignment. What kind of story is relevant, interesting, and possible to tell within the word count?

The best kind of story for a narrative essay is one you can use to reflect on a particular theme or lesson, or that takes a surprising turn somewhere along the way.

Don’t worry too much if your topic seems unoriginal. The point of a narrative essay is how you tell the story and the point you make with it, not the subject of the story itself.

Narrative essays are usually assigned as writing exercises at high school or in university composition classes. They may also form part of a university application.

When you are prompted to tell a story about your own life or experiences, a narrative essay is usually the right response.

The majority of the essays written at university are some sort of argumentative essay . Unless otherwise specified, you can assume that the goal of any essay you’re asked to write is argumentative: To convince the reader of your position using evidence and reasoning.

In composition classes you might be given assignments that specifically test your ability to write an argumentative essay. Look out for prompts including instructions like “argue,” “assess,” or “discuss” to see if this is the goal.

At college level, you must properly cite your sources in all essays , research papers , and other academic texts (except exams and in-class exercises).

Add a citation whenever you quote , paraphrase , or summarize information or ideas from a source. You should also give full source details in a bibliography or reference list at the end of your text.

The exact format of your citations depends on which citation style you are instructed to use. The most common styles are APA , MLA , and Chicago .

An argumentative essay tends to be a longer essay involving independent research, and aims to make an original argument about a topic. Its thesis statement makes a contentious claim that must be supported in an objective, evidence-based way.

An expository essay also aims to be objective, but it doesn’t have to make an original argument. Rather, it aims to explain something (e.g., a process or idea) in a clear, concise way. Expository essays are often shorter assignments and rely less on research.

An expository essay is a common assignment in high-school and university composition classes. It might be assigned as coursework, in class, or as part of an exam.

Sometimes you might not be told explicitly to write an expository essay. Look out for prompts containing keywords like “explain” and “define.” An expository essay is usually the right response to these prompts.

An expository essay is a broad form that varies in length according to the scope of the assignment.

Expository essays are often assigned as a writing exercise or as part of an exam, in which case a five-paragraph essay of around 800 words may be appropriate.

You’ll usually be given guidelines regarding length; if you’re not sure, ask.

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topic sentence

Definition of topic sentence

Examples of topic sentence in a sentence.

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'topic sentence.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

1885, in the meaning defined above

Dictionary Entries Near topic sentence

topic of discussion

Cite this Entry

“Topic sentence.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/topic%20sentence. Accessed 23 Jul. 2024.

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Kids definition of topic sentence.

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How to Write a Topic Sentence to Grab Readers’ Attention

Before you learn how to write a topic sentence, it is essential to give a clear definition of this term.

Definition of a topic sentence

A topic sentence is a sentence highlighting the subject in a paragraph and outlining the boundaries of the topic. It contains, as a rule, a word, phrase, or part of a sentence that requires distribution and specification in one way or another (giving details, examples, indicating the cause, effect, comparison, opposition, etc.).

purpose of topic sentence

Topic sentence structure

The topic sentence in a custom term paper has two main parts: the topic, and the controlling idea which limits the topic. In the topic sentence there should be no controlling ideas that are unrelated to each other. For example, the three parts of the following controlling idea are not related. It takes three separate paragraphs to fully reveal them:

Indie films are characterized by experimental techniques, low production costs, and provocative themes.

Here is how it would be better:

Independent films are characterized by experimental techniques.

How to write a good topic sentence

Any essay has a structure consisting of paragraphs. The sentences in a paragraph are united by one topic. For the writer and reader, it is important that this topic is indicated. Usually in the paragraph, there is a topic sentence that highlights the subject and outlines the boundaries of the topic in the paragraph.

If there is no topic sentence, it means that the topic of the previous paragraph continues to develop in the current paragraph. The main idea of the paragraph is then contained in a sentence, which is called the conceptual sentence. The sentences within the paragraph must be arranged in such a way that the conceptual sentence is positionally highlighted and underlined. The beginning and end of the paragraph are the perfect places to emphasize the main idea.

A paragraph may begin with a topic sentence and end with a conceptual one. However, most often we find paragraphs that use either a topic or conceptual sentence. Please note that in the introduction of an essay, you write a paragraph that begins with a topic sentence. In the main body and in the conclusion, write paragraphs with conceptual sentences.

Ways to present a topic or thought in paragraphs can be represented by the following most common techniques:

  • Giving examples confirming the idea expressed in the topic sentence
  • Comparing and contrasting
  • Explanation of the thesis reflected in the topic or conceptual sentence
  • Causal justification of the content of the topic sentence
  • Definition of concepts introduced by the topic sentence
  • Analogy – the distribution of the topic by pointing to the analog
  • Selection from the events, phenomena, persons, actions, signs, etc., indicated in the topic sentence of the paragraph, with its subsequent detailing
  • Formulation of a conclusion from the content of the topic sentence
  • Question-answer method of presenting the topic sentence in a paragraph
  • Complement of the thought reflected in the topic sentence of the paragraph
  • Forcing, strengthening the topic of the paragraph
  • Confirmation of the main idea of the paragraph
  • The assumption that is not contrary to the meaning of the topic or conceptual sentence
  • A reference to the condition of the realization or truth of the statement (negation) made in the topic sentence of the paragraph

There are 3 important things to keep in mind about a topic sentence.

  • A topic sentence is usually a complete sentence. This means that it contains at least one subject and one predicate.
  • A topic sentence contains both the topic and the controlling idea. It names the topic and limits this topic to one aspect, which can be fully disclosed within a single paragraph.
  • The topic sentence is the most general statement in the paragraph, because only the main idea is expressed in it. It does not give any details. The topic sentence is like a menu item in a restaurant. When you order food, you want to know more about such an item as, for example, simply “salad.” You want to know in general what type of salad this is, such as a potato, green, or fruit salad, but you don’t need to know all the ingredients. Likewise, the reader wants to know in general what to expect from a paragraph, but he or she does not want to know all the details from the very first sentence.

difference between topic sentence and thesis statement

Topic sentences examples

You will understand better how to write a topic sentence with the following examples:

  • Air pollution is caused by the presence in the atmosphere of toxic substances, mainly produced by human activities.
  • Effective leaders praise the work of their managers, the staff, the board, and local branches.
  • The “greenhouse effect” is the warming that happens when certain gases in Earth’s atmosphere trap heat.
  • If you are a dog owner, you probably already know just how awesome dogs are.
  • Teenage pregnancy is pregnancy in a woman 19 years of age or younger.

We hope that this post helps you to understand how to write a topic sentence. If you need help with any writing assignment, you can always get it on EssayShark.com. While our essay helper is dealing with your order, you can spend your time as you want. Avoid writing problems by simply leaving an order on our site!

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Home > Blog > How To Write an Expository Essay

How To Write an Expository Essay

How To Write an Expository Essay

  • Smodin Editorial Team
  • Updated: July 18, 2024
  • Student Guide for Writing

There are many different types of essays that students need to write, and one of them is an expository essay. In this kind of essay, you must present factual information clearly and logically, making it easier for your audience to understand the topic.

Want to learn how to write an expository essay that will impress? This guide will teach you all the tricks and tips to help you write an expository essay through detailed step-by-step instructions. Let’s get started!

A wooden desk with pieces of paper, books, an apple, a clock, and an inkwell with a pen in it.

An Introduction to Expository Essays

Expository essays provide a structured way to present information, ensuring that readers can grasp complex ideas through a logical and organized format. They essentially focus on explaining a particular subject. 

This type of essay is most common in educational settings, where it serves as a tool to assess students’ understanding of a topic. It provides an opportunity for students to showcase their ability to communicate that understanding clearly.

For professionals, the ability to write clear and concise expository essays can enhance their communication and essay-writing skills that may be required for their job role. They can make it easier to convey technical information or explain processes in a straightforward manner. 

According to a paper published in the Journal of Technology and Science Education regarding students’ thoughts about their essay-writing skills, 50% of students claimed to have a fair ability when composing essays. Hence, it is important to understand how to write a good essay if you want to enhance your ability past fair.

An open notebook with some notes and a pen on top of it.

What Is an Expository Essay?

Expository essays explain a topic or concept using facts and evidence, hence the expository essay definition is not too complex to grasp. Unlike persuasive or argumentative essays, expository essays do not aim to convince the reader of a particular viewpoint. Instead, they provide a balanced and comprehensive explanation of the subject.

An expository essay is all about clarity and detail. Complex topics are broken down and hence become more accessible to the reader. Expository essays are used in academic settings to test students’ understanding of a subject and their ability to convey information clearly. 

Now that you know what is an expository essay, we can look at the various forms these essays come in, each serving a unique purpose. Here are some of the more common types of expository essays: 

  • Definition essays: A definition essay defines a specific term or concept. They go beyond dictionary definitions, providing a deeper understanding by exploring the term’s significance and context. 
  • Classification essays: These essays categorize subjects into different groups or types. Each category is explained with its distinct characteristics and how it fits within the broader subject.
  • Process essays: Also known as “how-to” essays, provide step-by-step instructions on how to complete a particular task or process. A process essay is practical and straightforward and aims to guide the reader through a series of actions to achieve a specific outcome.
  • Compare-and-contrast essays : These types of essays take a deep dive into the similarities and differences between different subjects. A compare-and-contrast essay will help readers understand the subjects in relation to each other and highlight key points of comparison and contrast.
  • Cause and effect essays: When writing this kind of essay you thoroughly explore the connections between events or phenomena. They explain how one event leads to another and detail the causes and effects in a logical sequence.

By focusing on factual information and logical structure, expository essays enable writers to present a thorough analysis of their subject. This approach helps readers gain a clear and comprehensive understanding of the topic being discussed.

The Purpose of Expository Writing

While expository writing may be used to entertain or persuade a reader, it mainly serves to provide information. A well-crafted expository essay demonstrates the writer’s expertise on the topic and explains the subject in detail.

The main objective of expository writing is to convey information concisely. As previously discussed, expository essays can serve a valuable purpose for both academics and professionals. Here are some key purposes of expository writing:

  • Informing: Expository essays provide readers with essential information about a topic. This could include scientific processes or technical procedures. The goal is to enhance the reader’s knowledge and understanding of the subject.
  • Explaining: Expository writing breaks down complex ideas into simpler, more manageable components. By explaining how things work or why certain events occur, these essays make difficult concepts more accessible to the reader.
  • Clarifying: Sometimes, topics can be misunderstood or misrepresented. Expository essays aim to clarify such topics by presenting accurate facts and logical explanations. This helps dispel misconceptions and provides a clear, unbiased perspective.
  • Describing: Expository essays can also describe a particular process or phenomenon in detail. This includes outlining the steps involved and their significance.
  • Analyzing: Expository writing often involves analyzing information to uncover deeper insights. Such as examining data and exploring relationships between variables. 

By focusing on these purposes, expository essays can help readers gain a thorough and accurate understanding of the topic at hand. 

If you are describing a technical process, the goal is to provide a clear and comprehensive overview of the subject. In this case, you must also ensure your essay has a good writing flow . By the end of the essay, the reader’s knowledge and understanding of the subject should be significantly better. 

A woman writing notes under a heading that says "My plan."

6 Essential Steps to Follow When Writing an Expository Essay

A clear understanding of expository essay structure helps organize your writing, ensuring a logical flow from the introduction to the conclusion. These are the steps you should consider when compiling an expository essay.

Step 1: Choose an Appropriate Topic

Select a topic that is both interesting and manageable. Ensure it is specific enough to cover in detail but broad enough to provide ample information.

Step 2: Conduct Thorough Research

Gather reliable sources to support your essay. Use academic journals and books to find factual information. Take notes, organize your research, and reference them. 

Step 3: Create an Expository Essay Outline

An outline will help you structure your essay logically. It typically includes three parts: an introduction, body paragraphs, and a conclusion.

Step 4: Write the Introduction

The introduction should grab the reader’s attention and provide background information on the topic. It should end with a clear thesis statement that outlines the main points of the essay.

Step 5: Develop Body Paragraphs

Each body paragraph should focus on a single point related to the thesis statement. Begin with a topic sentence, provide supporting evidence, and explain how it relates to the thesis. Use transition words to ensure a smooth flow between paragraphs.

Step 6: Write the Conclusion

The point of the conclusion is to offer a summary of the main points presented in the essay. A good conclusion should also provide a final thought or call to action for the reader.

To help you get a better idea of how to craft different parts for these types of essays, we have included some expository essay examples below.

How To Write an Introduction for an Expository Essay

Imagine you’re writing an expository essay on the impact of social media on mental health. Your introductory paragraph should look like this:

“Social media has become an integral part of modern life, influencing how we communicate, share information, and perceive the world. While having its benefits, such as connecting people and providing a platform for self-expression, it also has significant effects on mental health. This essay will explore all impacts of social media on mental health and examine how it affects self-esteem, anxiety, and depression.”

The above is a good expository essay example if you want to write an introduction to engage your readers.

How To Write a Body Paragraph for an Expository Essay

Each body paragraph when you write expository essays should provide a detailed examination of one aspect of the topic. For example, if your essay is about social media’s impact on mental health, you might have paragraphs on:

  • Self-esteem: Discuss how social media influences self-esteem, both positively and negatively.
  • Anxiety: Explore the connection between social media usage and anxiety levels.
  • Depression: Analyze how social media can contribute to depression and offer potential solutions.

For example:

“One of the most significant impacts of social media on mental health is its effect on self-esteem. Studies have shown that frequent use of social media platforms can lead to increased feelings of inadequacy and low self-worth. This is often due to the tendency to compare oneself to others, who may present an idealized version of their lives online. However, social media can also boost self-esteem by providing a platform for positive feedback and support from peers.”

How To Write a Conclusion for an Expository Essay

The conclusion should summarize the main points and leave the reader with a lasting impression.

Below is an example of how to write a conclusion for an expository essay that will engage the reader:

“In conclusion, social media has a profound impact on mental health, affecting self-esteem, anxiety, and even depression. While it provides opportunities for connection and self-expression, it also has some significant risks. By understanding these effects and promoting healthy social media habits, we can mitigate its negative impact and harness its benefits.”

A person about to note down something in a notebook that is next to a smartphone and a laptop.

How To Write a Thesis for an Expository Essay

A thesis statement for an expository essay will be placed near the end of your intro. It is one of the most challenging aspects of an expository essay, and that is why we included a separate section in our article for it.

When using thesis statements, you should be able to explain your topic thoroughly and concisely to provide an answer to your research question. At this point, your communication skills and the ability to describe complex concepts in an articulate way should be pretty good.

Below we include a step-by-step process on how to write a thesis for an expository essay:

  • Select your topic.
  • Think about an interesting question to engage your readers.
  • Answer the question based on what you have discovered in your essay but ensure to make it sound interesting to entice your reader to check out the rest of your essay.

Remember to be concise when writing thesis statements for expository essays. You don’t need to overexplain as this may tire the reader and put them off from reading your essay.

Frequently Asked Questions

What is the purpose of an expository essay.

The main purpose of an expository essay is to explain or describe a particular topic using factual information. It aims to inform the reader without expressing personal opinions.

How do I choose a topic for my expository essay?

Choose a topic that interests you and has sufficient information available. Ensure it is specific enough to cover in detail but broad enough to provide ample content.

What is a thesis statement in an expository essay?

A thesis statement is a concise summary of the main points of your essay. It should be clear and specific, outlining the essay’s purpose and the points you will cover.

What types of evidence should I use in my expository essay?

Use factual evidence from reliable sources such as academic journals, books, and reputable websites. Avoid using personal opinions or anecdotal evidence.

Enhance Your Essays With Smodin 

Writing an expository essay is a valuable skill that can benefit students and professionals alike. By focusing on clear and logical presentation of factual information, expository essays allow writers to convey complex topics in an accessible and comprehensible manner. 

Expository essays serve a range of purposes, from informing and explaining to clarifying and analyzing. Regardless of the specific focus, the overarching goal remains the same: to enhance the reader’s understanding of the subject.  

Ready to impress your readers with your expository essay? Enhance your writing skills and create a compelling essay with Smodin’s AI writing tool. Join Smodin now and take your essay writing to the next level.

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  1. How to Write Topic Sentences

    Step 3: Expand with evidence. The rest of the paragraph should flow logically from the topic sentence, expanding on the point with evidence, examples, or argumentation. This helps keep your paragraphs focused: everything you write should relate to the central idea expressed in the topic sentence. In our example, you might mention specific ...

  2. What is a Topic Sentence? (Definition, Examples, How to Use)

    A topic sentence, the first sentence of a paragraph, presents the main concept discussed in the paragraph. It must contain sufficient information to support numerous examples and subtopics without being too broad to obscure the essay's intended purpose. The remaining sentences in the paragraph will act as supporting statements, providing ...

  3. Topic Sentence Definition, Examples, and Guidelines

    A topic sentence is a sentence, sometimes at the beginning of a paragraph, that states or suggests the main idea (or topic) of a paragraph. Not all paragraphs begin with topic sentences. In some, the topic sentence appears in the middle or at the end. In others, the topic sentence is implied or absent altogether.

  4. Topic Sentences and Signposting

    Topic sentences also establish their relevance right away, making clear why the points they're making are important to the essay's main ideas. They argue rather than report. Signposts, as their name suggests, prepare the reader for a change in the argument's direction. They show how far the essay's argument has progressed vis-ˆ-vis the claims ...

  5. How to Write a Strong Topic Sentence + Examples

    Step 3: Make your essay outline. Once you have the points you want to make within your thesis statement hammered out, make an outline for your essay. This is where you'll start to create your topic sentence for each paragraph. You want to clearly state the main idea of that paragraph in the very first sentence.

  6. Writing Topic Sentences

    Topic sentence vs. thesis statement What is the purpose of a topic sentence? The purpose of a topic sentence is to inform the reader of the main idea of the paragraph and how it connects to the overall objective of the essay. An effective topic sentence accomplishes one or more of the following: Makes a claim. Supports other claims made in the ...

  7. Using Topic Sentences

    Use a topic sentence to show how your paragraph contributes to the development of your argument by moving it that one extra step forward. If your topic sentence merely restates your thesis, then either your paragraph is redundant or your topic sentence needs to be reformulated. If several of your topic sentences restate your thesis, even if ...

  8. Topic Sentence: Definition, Examples and Useful Tips for Writing A

    Conclusion. A topic sentence is one which appears, usually (but not always) at the beginning of each paragraph of an essay. The topic sentence is used to layout the ideas and arguments that will be covered within the paragraph and should be carefully planned out to ensure that they are clear enough to give the reader an idea of what will be ...

  9. How to Write a Topic Sentence: 3 Topic Sentence Examples

    How to Write a Topic Sentence: 3 Topic Sentence Examples. Written by MasterClass. Last updated: Sep 28, 2022 • 3 min read. Learn how to write topic sentences to support the main thesis of any piece of writing.

  10. Topic Sentence Definition

    The topic may be the same as the thesis' topic, but the angle differs depending on the part of the thesis angle the topic sentence is offering. Think of topic sentences in this way: The thesis sentence offers the main idea or insight for the whole essay; a topic sentence offers the main idea or insight for a section of the essay. To use ...

  11. Examples of Topic Sentences That Make the Purpose Clear

    A great topic sentence gives you insight into what you can expect in a paragraph. Make yours one to remember with these topic sentence examples. ... which is the topic sentence of your entire essay. Every topic sentence has two parts: a topic (what the paragraph is about) and a controlling idea (the direction the paragraph will take). Take a ...

  12. Definition Essay Examples and Topic Ideas

    Learn the structure of a definition essay and read two examples of essays about concrete and abstract concepts. Dictionary Thesaurus Sentences ... They begin with relevant topic sentences. Body paragraphs can provide important information about the term, including an extended definition, etymology, denotations and/or connotations, ...

  13. Topic Sentence

    The topic sentence contains two parts: the topic and a controlling idea. The topic is WHAT the paragraph is going to be about, and the controlling idea explains WHY the paragraph is being written. The topic sentence helps your reader understand the purpose of your paragraph. II. Examples of a Topic Sentence.

  14. Topic Sentence

    A topic sentence also states the point the writer wishes to make about that subject. Generally, the topic sentence appears at the beginning of the paragraph. It is often the paragraph's very first sentence. A paragraph's topic sentence must be general enough to express the paragraph's overall subject. However, it should be specific enough ...

  15. Topic Sentences

    Topic Sentence for Body Paragraph 1: Strawberries are a healthy substitute for desserts because they have a much lower carbohydrate count and are rich in nutrients and fiber. Notice that the topic sentence includes the first main point of the thesis statement, but it expands on the idea with further details.

  16. Topic Sentence Definition

    Topic Sentence Definition Topic sentences are special sentences that serve as guideposts to the writer and reader; they help shape the essay and move it along from idea to idea. If you have already gathered information and developed some support for a thesis, you may find that your support falls into groups or categories.

  17. How to Write a Topic Sentence

    Step#1 Clearly State The Main Idea. A topic sentence is the first paragraph of the paragraph. It must clearly explain the particular subject that would be discussed in the paragraph. This should be stated in very clear language so that the reader can easily understand the idea.

  18. What is a topic sentence?

    Topic sentences help keep your writing focused and guide the reader through your argument. In an essay or paper, each paragraph should focus on a single idea. By stating the main idea in the topic sentence, you clarify what the paragraph is about for both yourself and your reader.

  19. Topic sentence Definition & Meaning

    topic sentence: [noun] a sentence that states the main thought of a paragraph or of a larger unit of discourse and is usually placed at or near the beginning.

  20. Topic Sentence

    This is a strong topic sentence because Budziak states the overarching topic of the essay, an analysis of T.S. Eliot's poem, and also explains that the specific paragraph will focus on the ...

  21. How to Write a Topic Sentence

    There are 3 important things to keep in mind about a topic sentence. A topic sentence is usually a complete sentence. This means that it contains at least one subject and one predicate. A topic sentence contains both the topic and the controlling idea. It names the topic and limits this topic to one aspect, which can be fully disclosed within a ...

  22. 30 Examples of Topic Sentences (by grade level)

    Elementary students often write simple topic sentences that focus solely on the main idea of the paragraph. Some examples of topic sentences for this age group include: When we had a snow day, I made snow angels, drank hot cocoa, and went sledding. Students should not have to do homework because it takes a lot of time.

  23. How To Write an Expository Essay

    Definition essays: A definition essay defines a specific term or concept. They go beyond dictionary definitions, providing a deeper understanding by exploring the term's significance and context. ... Begin with a topic sentence, provide supporting evidence, and explain how it relates to the thesis. Use transition words to ensure a smooth flow ...