Grammar Booster is a four-level, full-colour series of grammar reference and practice books. The series is suitable for use on its own or with any Beginner, Elementary, Pre-Intermediate and Intermediate course. Grammar points are clearly presented through a fun cartoon strip featuring Jim and Tonic, two endearing cartoon characters, who not only appeal to students’ imagination, but also help them to understand and practise the grammar points presented. Grammar points are taught in short, easy stages which students can easily cope with. A wealth of exercises after the presentation of each grammar point gives students plenty of practise. Clear and simple explanations of all the grammar points covered enable students to study alone and gain a better understanding of the material. A communication activity and a writing task at the end of every unit help students consolidate the grammar points covered in each unit in a fun and effective way. Five review sections which check students'