Niu Chunlin's English Grammar Book is a textbook with detailed content and clear structure. This book systematically introduces all aspects of English grammar, including part of speech, sentence structure, tense, voice and so on. Each topic has clear explanations and rich examples to help readers understand and master English grammar rules. Moreover, the book also provides a lot of exercises and answers for readers to consolidate their knowledge and test their understanding. Niu Chunlin, a senior linguist and educator. His grammar book is accurate and authoritative, which can help readers build a solid foundation of English grammar. So Niu Chunlin's English grammar book is very good.