A paragraph is unified if its main idea is consistently developed without unrelated comments or references. The following suggestions should help you create unified paragraphs:
1. Construct a focused topic sentence and then develop it through the entire paragraph.
2. Do not add anything to the paragraph that does not develop or support the main idea in the topic sentence.
Example of a Paragraph that is not Unified
There are many styles of martial arts, and you must do some research in order to choose the right one for your needs. First, your should decide your reasons for learning a martial art: fitness, self-defense, or tournament competition, for example. You should consider how much you are willing to spend on lessons and equipment. Before selecting a teacher, observe how he or she interacts with students. Ask about the teacher's own training and skill level. The actor Bruce Lee held black belts in a number of martial arts. Find out what professional associations the instructor belongs to, and verify his or her status in the martial arts community. By inquiring and asking questions, you can find a martial arts program that will bring you pleasure and physical benefits.
Note how the sentence about Bruce Lee breaks the unity of the idea in the sentence. If this sentence is omitted, the paragraph will become unified.