This book is presented to University Students. It is divided into two parts: grammatical rules and practical exercises. It aims to enriching students' knowledge and developing their language skills. The first part helps students build their own vocabulary and improve their understanding. It also helps them read and listen well. In addition, it can help them communicate well and avoid grammatical mistakes as communication is a tool which can be transmitted through reading. Certain grammatical rules are presented for helping students write well and avoid common grammatical mistakes in English. At the end of the book, practical exercises are provided for measuring students' ability to read and write properly.