The world's best-selling grammar series for learners of English. This 4th edition, with answers, is ideal for self-study. The book contains 100 units of grammar reference and practice materials, with photos and illustrations in full colour and a user-friendly layout. It is ideal for learners preparing for the Cambridge Advanced, Proficiency or IELTS examinations, and is informed by the Cambridge International Corpus, which ensures the language is authentic and up-to-date.