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. Michael Swans guide to problems in English. Key Features Online access, including 87 diagnostic tests. Completely revised and updated to reflect changes in language use. NEW Organisation into two easy-to-use parts, making it quicker to find t
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