About the book: 2020 / This book is the universal key to understanding all tenses of the English language. The author offers a new way of learning and teaching English grammar. The author’s unique methodology consists of a detailed analysis of each time separately and an explanation of their relationship with each other. This method will give you a convenient cheat sheet on English tenses and will help eliminate mistakes when using them. The book is intended for everyone who studies English, and can also be used as a teaching aid for English teachers.