Mastery of English grammar is achieved only through practice, practice, and more practice. There are so many rules and so many exceptions to the rules that understanding grammar seems like a daunting task. However, any piece of writing is only as strong as its conventions - you must comprehend grammar in order to succeed in school, on standardized tests, and in the workplace. This book helps you fine-tune grammar essentials with quick but thorough lessons that take only 20 minutes a day! Nguồn e-thuvien.com Link: Vui lòng đăng nhập hoặc đăng ký để xem link
