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 and up-to-date examples. 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.