Breakthrough Grammar and Vocabulary Book 1 -Series consists of six graded books aimed at giving students the best possible foundation in the English language. Each book contains 75 grammar and 75 vocabulary items and worksheets with definitions, descriptions, examples and answers. Some items are repeated for enforcement and revision. The contents pages give detailed grammar and vocabulary items. The series is suitable for all levels of English language learners. It can be used for class study, self-study and reference.