Practical English Usage, 4th edition with Online Access Code Pack

Fully revised and updated, and now available online and in print.
Practical English Usage has sold over 2 million copies worldwide. Now revised and updated for the fourth edition, it answers the questions that teachers and learners ask about English grammar and vocabulary with clear, corpus-informed explanations and examples.
Practical English Usage is recommended for any teacher, trainee teacher, or advanced-level student looking for answers to questions about the English language. The material is now organised in two parts (grammar and vocabulary), making it easier than ever to find the answers, either online or in print.
Part 1 is a complete practical learner's grammar with 28 sections, covering all the structural points that cause problems for learners.
Part 2 is a guide to vocabulary problems covering:

rules for word formation and spelling
a survey of high-priority vocabulary areas
an A-Z guide to over 250 common word problems

The 600+ entries provide answers to the questions that learners typically ask, for example:

use of tenses
the truth about conditionals
article problems
singular they
getas a passive auxiliary
bring or take?
can, could, may or might?
classic or classical?
the language of emails
rules for word formation and spelling

Plus:

the grammar of speech and formal writing
British-American differences
questions of style and idiom
changes in English
politeness
avoiding offensive language
a survey of high-priority vocabulary areas
a guide to over 250 common vocabulary problems
lists of learners' most common mistakes