Top 50 grammar mistakes how to avoid them (Easy English)

资源介绍 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.