COLUMBIA ENGLISH GRAMMAR FOR GMAT is written specifically for students who are preparing to take the GMAT test . It has 33 score-raising lessons covering all the absolutely essential grammar rules, such as subject-verb agreement, dangling modifier, parallel structure, and others which are most often tested on the GMAT. To help you understand better and memorize these key grammar rules more easily, all the lessons are designed to follow the same format with the following unique features: 1. ERROR EXAMPLES: show you what kinds of mistakes most often made at GMAT and how to correct them; 2. GRAMMAR RULES: teach you all the grammar rules you need to know to help you ace the test; 3. PRACTICE TESTS: Use sample Sentence Correction and Sentence Completion questions to help you memorize these grammar rules through repetition; 4. ANSWER KEYS: provide answers and explanations to help you avoid the mistakes forever. COLUMBIA ENGLISH GRAMMAR FOR GMAT gives you an English professor's proven method, guaranteed to help you master all the essential grammar rules for the test. If you can spend 15 minutes a day learning the grammar rules and doing the exercises, this magical grammar book will definitely help raise your GMAT score and make you a better reader and greater writer.