As you write, your primary concern will be with the ideas you want to convey to your audience, not parts of speech or sentence structure. Still, writing clear and correct sentences is an important part of communicating effectively with your audience. This and the other sections in the Handbook will help you achieve that goal.^*

^* This brief review is based on an extraordinary book: A Grammar of Contemporary English (New York: Harcourt, 1972). If you need more information than is provided here, consult a stand-alone handbook, such as Diana Hacker and Nancy Sommers’s The Bedford Handbook or Andrea Lunsford’s The St. Martin’s Handbook.