A topic sentence gives a paragraph a direction. It tells the reader what point the paragraph will develop, rather than merely naming the subject. In many academic essays it appears near the beginning, though writers may place it elsewhere when the structure calls for it.

Move from a subject to a claim

“Another issue is transportation” identifies a subject. “Limited evening buses make the current closing time harder for working students” makes a point that evidence can support. The second sentence helps you decide what belongs in the paragraph. Ask what the paragraph contributes to the thesis. Does it establish a cause, compare an alternative, explain a pattern, or answer an objection? The topic sentence should reflect that job. Do not force every paragraph into the same formula if the assignment or genre calls for a different approach.

Before and after

Example to adapt
Before: The character's house is important. After: The changing description of the house makes the character's growing isolation visible. Before: There are also disadvantages. After: Extending every opening hour would increase staffing demands, which makes a limited trial easier to evaluate. Before: This paragraph will discuss the survey. After: The survey reveals a difference between when visitors say they prefer to arrive and when they actually use the building.

Each revised sentence makes a claim that must be developed. A stronger sentence does not remove the need for evidence; it makes that need clearer.

Keep the paragraph aligned

Read the topic sentence, then check each remaining sentence against it. Evidence should support the stated point, and explanation should show how that evidence matters. If the paragraph shifts to another claim, either revise the topic sentence to capture the real focus or start a new paragraph. Avoid using a topic sentence as a summary of everything you know. A sentence with several unrelated claims will make the paragraph hard to organize.

Check the sequence

Read only the topic sentences across the essay. They should give a rough view of the argument's progression. If they repeat the thesis without adding anything, make each paragraph's contribution more specific. If the sequence jumps abruptly, add a connection or reconsider the order before polishing individual phrases.

Make the next draft yours.

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