This book explains the grammar rules, explains confusing and seemingly contradictory rules, defines the different concepts and also provides exercises for practice. As it is for advanced students, this book just provides concise explanations and then provides a set of practice exercises. The book focuses on many topics like grammatical patterns, grammatical contrasts, and many more. It explores grammatical patterns like ‘will be - ing’ (like will be leaving), grammatical contrasts like whether to use ‘would’ or ‘used to’ in past tense constructs, and whether to use ‘except’ or ‘except for’. The book contains more than 100 units of grammar concept explanations. Each unit consists of two pages. It is designed so that each unit is concise and to the point. The book is laid out in this format, the left hand page contains explanations of grammar concepts with examples