How to Write a Clear Paragraph — The 3-Part Formula

By Sourov

🎯 B1–B2
⏱️ 5 min

💬 The essay mistake I made at 30: Writing four connected sentences is not a paragraph. A paragraph has a job. It makes one point, proves it, and tells you why it matters. This 3-part formula changed how I write in two languages.

The 3-Part Paragraph Formula

Topic Sentence → Supporting Detail → Conclusion / Link
1. Topic Sentence — The main idea of the paragraph in one sentence.
Example: “Learning a second language has significant cognitive benefits.”
2. Supporting Detail — Evidence, example, or explanation.
Example: “Research by Nation (2001) suggests that bilingual speakers show greater mental flexibility and delayed onset of cognitive decline.”
3. Concluding Sentence — So what? Link back to the topic or forward to the next paragraph.
Example: “This suggests that the value of language learning extends far beyond communication.”

❌ Common Paragraph Mistakes

  • Two ideas in one paragraph → Split into two.
  • No topic sentence → Reader is lost from line one.
  • Details with no link to the main point → Cut or connect.

🎯 Quick Practice — Label the Parts

Read this paragraph and label each sentence T (topic), S (support), C (conclusion):

[1] Regular exercise has a powerful effect on mental health. [2] Studies consistently show that 30 minutes of aerobic activity reduces cortisol levels and increases endorphins, improving mood for several hours. [3] It follows that physical activity should be considered a core component of mental wellbeing strategies.

Reveal Answers ▼
[1] T — Topic sentence
[2] S — Supporting detail (research/evidence)
[3] C — Concluding sentence

✅ Takeaway: One paragraph = one idea. Topic sentence → Evidence/Example → Conclusion. If you can’t write a one-sentence topic sentence, you don’t know your own argument yet.

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