step-by-step instruction, and plenty of exercise materials.Each book in the series breaks grammar skills into clearly defined skill units and further divides each skill into manageable subskill areas. By teaching each skill gradually, the books ensure that students grasp and retain each grammar point fully. Each book is also structured by a series of clear-cut objectives outlining exactly what skills students will learn, why they need to know the skill, and how they can determine if they have mastered the skill effectively.Book 2 expands the grammar skills from Book 1 and develops usage skills.

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