How to write a paragraph An Essay vs A Paragraph Paragraphs for written assignments are easy to spot because they are indented: The kind of paragraph we will consider in this book contains three parts: the subject, the topic sentence, and the support. The subject is what you will write about. The topic sentence includes both the subject and the specific treatment of that subject. The treatment tells what you plan to do with the subject. A paragraph basically contains three parts the subject ……………………………… the topic sentence …………………………. the support …………………………………