A Course in Grammar and Composition (for classes IX and X) has been prepared for learners at the high school level. This book aims to be a comprehensive study and practice of grammar for this level. The course in grammar aims to familiarise learners with the rules of grammar and usage and provide simple and systematic practice in using grammatical structures. The course in composition aims to introduce learners to the features of effective writing, familiarise learners with the process of writing, develop learners? ability to write coherently and cohesively, and enhance learners? skills in using English for written communication in day-to-day life.