This document discusses the concept of parallelism in writing. Parallelism means using similar grammatical structures to express similar ideas. When parts of a sentence are comparable, they should have the same grammatical form. Examples show how to correctly use parallel structure with verbs, nouns, adjectives, and after coordinating conjunctions like "and" and "or." The document also provides exercises for readers to identify parallel and non-parallel options to fill in blanks. Sources for the information are cited.