A unit of A paragraph is a unit of meaning other units of are the word and the sentence. main meaning ef ene one topic, subject. In supporting details. A well- be explain and developed by minor ideas. These minor ideas are called written paragraph develops only one main idea. If a main idea is introduced, it should be developed in a separate paragraph. In that way, each paragraph has one main idea. If a new topic is introduced, it certainly calls for a new paragraph. ation of a Paragraph