 Parts of a paragraph. A paragraph. A group of sentences that develops one main idea. Example. I am a student in Project Idea. My name is Maria. I am from Mexico. I'm studying English. I want to be a nurse. Project Idea will help me learn English to become a nurse. There are three parts of a paragraph. The introduction, body, and conclusion. Introduction. The introduction has your topic sentence. This is your main idea where you introduce your topic. For example, I am a student in Project Idea. The next part of your paragraph is the body. This is where you explain your topic. You use supporting sentences and you use supporting details. For example, my name is Maria. I am from Mexico. I'm studying English. I want to be a nurse. The third part is the conclusion. This is your concluding sentence. It's where you restate your main idea when you finish your paragraph. For example, Project Idea will help me learn English to become a nurse. A paragraph. I am a student in Project Idea. My name is Maria. I am from Mexico. I'm studying English. I want to be a nurse. Project Idea will help me learn English to become a nurse. Things to remember. Write a title. Indent the first sentence. Indented means to leave a space. Use capital letters and use periods. The end.