Do verb tenses make you tense? Does "affect" vs. "effect" put you in a panic? Help is here!This easy-to-use guide to grammar explains just how the English language works—especially the many ways it can trip you up—so you can write and speak with confidence. You'll find:•Thorough coverage of key areas of grammar•Easy-to-understand explanations and plenty of exercises to test and refine your skills•An answer key at the back of the book to encour...