Grammar world, reference & Practice an illustrated reference and practice book for students from elementary to intermediate level ideal as a comprehensive grammar course, for reference, for self-study, for supplementary material, homework and revision. This book provides clear explanations of those grammar points which are the most common source of errors as well as providing a vast and varied amount of exercises to achieve grammar success. Grammar world includes: 112 units Each of which focuses on one area of grammar one-page illustrated explanations written in simple English over 800 varied exercises including illustrations to provide cues, storylines, recurring characters, and open exercises review sections with a short summary and Cambridge pet -style Questions A grammar check with key to be used as an entrance or exit test appendices for quick and easy reference.