Forest Books: Michael Swan Practical English Usage - 3rd Edition

Practical English Usage answers your questions about the English language - and the questions your students ask. 
It is organized as an A-Z dictionary of over 600 problem points in the English language, all explained with practical, clear information.
Now in its third edition, Practical English Usage has sold over two million copies and is a world best-seller.
Practical English Usage is available in some countries as a Pack with Grammar Scan (diagnostic tests to accompany Practical English Usage).

Key Features:

·       *   600+ entries, listed A-Z makes it easy to find what you're looking for

·       *   Covers all the grammar and vocabulary areas you want to know about

·       *   Gives clear explanations that really answer your questions

·      *    Includes real examples so you know how language is used

·       *  Gives you information on American English

·       *   'Don't say it!' - a special section on 150 common mistakes and how to avoid them.