How to Write a Paragraph: Topic Sentence, Support and Examples

A good paragraph makes one point and proves it. Open with a topic sentence that states the point, add two to four sentences of evidence, explanation or detail, and finish with a concluding sentence that ties back to your argument. PEEL and TEEL are classroom versions of the same shape. Below: three annotated paragraphs, a checklist and common mistakes.

What is a paragraph, and how do you write a good one?

A paragraph is a group of sentences that develops one idea. To write a good one, state that idea in a topic sentence, support it with evidence and explanation, and close with a sentence that links back to your argument or forward to the next point. That is the whole recipe. Everything else in this guide is detail on how to do each part well.

A new paragraph signals a new idea. Readers use the indent or the blank line as a map: they skim the first sentence of each paragraph and decide whether to read on. If your paragraphs each carry a single clear point, the page stays easy to follow even when the subject is difficult.

The three parts of a paragraph

1. The topic sentence

The topic sentence names the paragraph's single point. It usually comes first, because readers then know what the next few sentences are for. A strong topic sentence is specific enough to be proved and narrow enough to fit in one paragraph.

The weak versions announce a subject. The stronger versions make a claim that the rest of the paragraph can support. If you want more on this sentence alone, see our guide to writing a topic sentence.

2. The supporting sentences

Supporting sentences do the work. They can contain:

• Evidence: a fact, an example, a quotation, a figure from a source you can cite.
• Explanation: a sentence that says why the evidence matters to the point.
• Detail: a description, a short scenario, a comparison.

Evidence on its own is not enough. A quotation dropped into a paragraph with no comment is a common reason marks are lost, because the reader is left to guess what you wanted it to prove. Always add the "so what".

3. The concluding sentence

The last sentence closes the idea. It can restate the point in fresh words, say what follows from it, or lead into the next paragraph. In a short answer it often carries the paragraph's conclusion; in a long essay it may be a bridge. Avoid ending with a new piece of evidence, because the paragraph then feels unfinished.

PEEL and TEEL: the school methods

Teachers in the UK, Australia and elsewhere often hand out a mnemonic so pupils remember the order. Two are very common.

Some classrooms use variants (PEE, PEAL, PETAL), and the labels differ from school to school. They all describe the same logic: claim, proof, comment, close. Use whichever your teacher or exam board prefers, and do not worry if the letters in your handout differ from these. Treat them as a scaffold for drafting, not a template to repeat mechanically in every paragraph; strong writers vary the pattern once the habit is secure.

Unity and coherence

Two words appear in almost every marking scheme for paragraph writing.

Unity means every sentence belongs to the topic sentence's idea. If a sentence would fit just as well in a different paragraph, move it or delete it.

Coherence means the sentences connect smoothly. You get coherence by:

1. Ordering ideas logically: chronological, general to specific, or most to least important.
2. Repeating key terms (or close synonyms) so the thread is visible.
3. Using pronouns with clear referents: "this policy" is clearer than a bare "this".
4. Using transition words such as however, for example, as a result, in contrast. Our list of transition words groups them by function.

Three annotated paragraphs

Argumentative paragraph

[Topic sentence] Universities should move first-year lectures online only when they also keep small, in-person seminars. [Evidence] A recorded lecture can be paused and replayed, which helps students who are learning in a second language or who have caring responsibilities. [Explanation] However, a recording cannot answer a question on the spot, so the discussion that clarifies difficult ideas has to happen somewhere else. [Link] A blended model therefore keeps the flexibility of video while protecting the conversation that makes degree-level study worthwhile.

What it does well: the topic sentence makes a conditional claim, the evidence is concrete, "however" introduces a limit that makes the argument more honest, and the last sentence ties the three ideas together.

Descriptive paragraph

[Topic sentence] By six in the morning the market on the harbour front is already loud and crowded. [Detail] Trawlers unload crates of silver mackerel that slap onto wet concrete, and a man in orange waders shouts prices over the engines. [Detail] The air smells of diesel, salt and frying onions from the van by the gate. [Concluding sentence] By the time the commuters arrive, the best of the catch has gone.

What it does well: one dominant impression (noise and activity), details from several senses, and a closing sentence that gives a sense of time passing. The example is invented to show technique, not a report of a real place.

Analytical paragraph

[Point] In the opening scene the author uses a cold, empty house to show that the narrator feels cut off from her family. [Evidence] She describes "a kitchen where nothing had been used for days", and the long, flat sentence slows the pace. [Explain] The word "nothing" and the lack of any person in the room suggest absence, so the reader senses loneliness before the narrator names it. [Link] This early image prepares for the later argument, when the silence at the dinner table finally breaks.

The quotation and the setting are an illustration of the method, not a quotation from a real text. In a real essay, quote the book exactly and cite it as your style guide requires. Notice the analytical move: the paragraph does not retell the scene, it explains how a detail creates an effect.

How long should a paragraph be?

There is no fixed number. A typical academic paragraph runs from about 100 to 200 words, or from four to eight sentences, but a one-line paragraph can be right for emphasis and a long paragraph can be right in a dense argument. Use the idea as the limit: when the point is made and proved, stop. See how long a paragraph should be for conventions in essays, emails and web writing.

Common mistakes and how to fix them

A quick checklist

• Does the first sentence state one clear point?
• Does every other sentence help prove or explain that point?
• Is there at least one piece of specific evidence, and have I explained it?
• Do the sentences connect through logic, repeated key terms and transitions?
• Does the last sentence close the idea or lead to the next?
• Is it a sensible length for the reader and the task?

Using AdeptWrite to draft and rework a paragraph

AdeptWrite is free to use, and tools run on text up to 6,000 characters per run. Here is a practical way to use them without handing over the thinking.

1. Write your own topic sentence. It is the one part that has to be yours.
2. Draft with the Paragraph Generator. Paste your main idea and pick a mode: Introduction, Body, Conclusion, Descriptive, Expository, Narrative, Argumentative or Persuasive. You get one paragraph from your idea. Treat it as raw material.
3. Check it against the checklist above. Generated text can be generic. Replace vague claims with your own evidence, and check any fact before you use it, because the tool does not know your sources.
4. Fix the sentences. Run the result through the Grammar Checker to catch spelling, punctuation and grammar problems, with each change highlighted so you can accept or reject it.
5. Measure it. The Word Counter shows length, and the Readability Checker helps you judge whether the sentences are too long for your audience.

If your coursework has rules about AI assistance, follow them and say what you used. A paragraph you built from your own evidence and edited yourself is far safer, and far better, than one you pasted unchanged.

← All guides