Correct grammar is more than a set of conventionally accepted rules; it`s a reflection of clear thinking. Here are the rules of English grammar with insights into their underlying logic. For many years, "Barron`s Pocket Guides" have served high school and college students, as well as business professionals and others, as reliable fast-reference books filled with easy-to-locate information pertaining to all practical aspects of language use. The new editions are attractively designed and printed in two-color type, and serve as especially useful books for the home, school, or business reference bookshelf.