What do you want in a grammar book, anyway? Under the Grammar Hammer provides clear, concise, and even witty examples of the 25 most common grammar mistakes. Designed for college students and adults seeking practical guidance on grammar rules, this thin and affordable books is almost ideal for intermediate and advanced ESL classes. Forget buying thick, expensive, and often incomprehensible grammar tomes like the Azar series. This book provides vivid examples, short descriptions, and realistic rules that work in the vast, vast majority of writing situations.