"This book focuses on the most commonly made grammar mistakes by non-native English speakers. This means that you can set yourself a reasonable target. So rather than trying to learn all English grammar, just concentrate on those issues that tend to be used the most frequently and/or tend to create the most misunderstandings.Each chapter contains:Examples of typical mistakes.Examples of correct usage.Rules / explanations.A short exercise where you can immediately practise what you have learned.Additional exercises.Keys to all exercises.The book also contains a Teachers Introduction.Other books in the series: Top 50 vocabulary mistakes - how to avoid them Wordsearches - widen your vocabulary in English Test your personality - quizzes that are fun and improve your English Word games, riddles and logic tests - boost your English and have fun Jokes - have a laugh and improve your English"--Publisher's description.