ENTER THE WORLD OF GRAMMAR is a graded series of seven English grammar books. This series of books is also available as a multimedia system. Books A and B are especially designed for young learners. Books 1, 2, 3, 4 and 5 are designed for students from Elementary to Advanced level. Key features: Full colour illustrations; Communicative activities; Carefully graded and challenging exercises; Clear grammar explanations; Revision units.