Books in the Clear Grammar series teach basic grammatical concepts, provide speaking and writing practice in grammatical structures and at varying cognitive levels, offer opportunities for students to check their progress, and serve as a grammar reference that is written with language and terms that lower- level students can understand without teacher assistance. Lessons focus on one specific grammar point and include grammar presentations, lists of potential errors with corrections shown, written exercises, speaking activities, multiple choice exercises, and review tests.Book 1 (beginning/high-beginning): the verb to be, regular verbs, possessive adjectives, demonstrative adjectives, past tense of to be and regular verbs, wh-questions, word order, present progressive, count and noncount nouns, prepositions. Book 2 (high-beginning/low-intermediate): articles, to be + going to, past tense of irregular verbs, how questions, frequency adverbs, object pronouns, one/other, the possessive, words that compare, modals, problem words. Book 3 (low-intermediate/intermediate): two-word verbs, past progressive, present perfect, problematic time words, adverbs of manner, too/for, adjectives, used to, infinitives, gerunds, adverbs of purpose, sentence connectors, relative clauses.