This practical informative and comprehensive book is especially written for Turkish students bearing in mind the special problems they have with English Grammar. Aimed at a wide market it is suitable for KPDS UDS TOEFL secondary high and university students at intermediate and advanced levels and for teachers of English. The book contains lengthy explanations which are followed by meticulously selected examples. At the end of each chapter are a series of detailed tests aimed at checking and consolidating the students knowledge plus preparing them for the proficiency examinations. The book includes information at several levels from comparatively easy points to more advanced problems. It also shows examples of common mistakes. Explanations where possible are concise and in normal everyday language to facilitate easy understanding.