Clear Grammar 4 introduces advanced grammar. Clear Grammar 4, 2nd Ed., includesSubject-verb agreementWord formsPast perfect tenseConditionalsAdverb clausesNoun clausesReduction of adjective and adverb clauses (including appositives)Past modalsReview of verb tensesClear Grammar 4 concludes with a review of this volume's contents of advanced grammar points. Clear Grammar is a four-level grammar series that features a unique combination of useful grammar information written in clear language with activities that promote more accurate and fluent writing, speaking, reading, and vocabulary usage. Important features of the new editions of Clear Grammar include: More user-friendly charts to accompany grammar explanationsHigh-frequency, corpus-informed vocabulary related to each grammar pointGrammar discovery tasks using students' inductive learning skillsA greater variety and more activities, including practice online (www.press.umich.edu/esl/compsite/cleargrammar/)Many more activities at the longer discourse levelThe addition of reading practice at the end, plus a critical-reading taskMore writing practice, including one on editing student writing and another for original student writingTwo vocabulary practice activities per unit, with one on collocations; plus many one-minute lessons showing the connection between grammar and vocabularyMore speaking practice, with activities that require students to speak and listen to each other while using the target grammar Support for teachers in the form of indicators that reference how to teach the grammar points in the Clear Grammar series from Keys to Teaching Grammar for English Language Learners by Keith S. Folse (978-0-472-03220-4).