This book attempts to illustrate and explain points of English usage by focusing on the errors most commonly made by non-native speakers. Its explanations address many of the most common English structures. These explanations have been kept as simple as possible, in the belief that clarity and usefulness are far more important than absolute thoroughness. Their purpose is to help you use English structures correctly in most situations, rather than risk confusing you by explaining every possible usage.
The book was mainly intended for individual self-study, but it may also be used effectively in the classroom. It was written mainly for upper-intermediate students of English, but should also be of interest to more advanced students and even to teachers of English. Though certain errors are made more often by learners from certain language backgrounds, most of the errors discussed here are made frequently by students from many different backgrounds, so almost any intermediate or advanced learner will be able to profit from it.
