The "Grammar Booster" series has been carefully researched and planned for beginner to intermediate students who need grammar practice. The key features include: 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 plenty of practice of what has been taught; clear and simple explanations of all the grammar points covered encourage 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 consolidate the grammar points covered in each unit in a fun and effective way; five review sections ensure that students have a thorough understanding of all the grammar points covered in the previous units; and, five progress tests give teachers the opportunity to assess their "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.