Perfect for self-study, but also ideal for supplementary activities in the classroom. This fourth edition is the highest level in a series that has been used by millions of language learners and teachers around the world.Key features:105 units of grammar reference and practice materials, including 5 new units on grammar for academic purposes.The Study planner helps learners identify which grammar to focus on.A comprehensive Grammar reminder section allows learners to double-check language areas they have already studied.Informed by the Cambridge English Corpus to ensure all the language taught is authentic and up-to-date.Includes additional resources on Cambridge One: eBook with audio and online tests.