... unit’s grammar points After every four units, students will take a review test The tests will help students recall what they have studied and assess their understanding of the grammar points Grammar ... Grammar Point Two grammar boxes explain the main grammar points in the unit Simple charts and corresponding pictures help students clearly understand and easily grasp the fundamental grammar structures ... to allow students to review and reinforce each unit’s grammar points and help them gradually expand their understanding of the grammar rules Grammar for Writing This section allows students to...