Sentence Functions in Paragraph Development To write a good paragraph in communication, the writer first needs to decide upon his purpose or idea and to try to make it clear to his reader in a topic sentence. Then, almost immediately, he should develop his idea by presenting relevant supporting details. After that, he needs to give a logical conclusion to the idea just discussed to satisfy the reader psychologically. With all this, and with various other means of paragraph development, he organizes the paragraph and gives it an overall structure of unityTo write a good paragraph in communication, the writer first needs to decide upon his purpose or idea and to try to make it clear to his reader in a topic sentence. Then, almost immediately, he should develop his idea by presenting relevant supporting details. After that, he needs to give a logical conclusion to the idea just discussed to satisfy the reader psychologically. With all this, and with various other means of paragraph development, he organizes the paragraph and gives it an overall structure of unity. Sentence Functions in Paragraph Development