The book "Good Grammar" is a comprehensive guide for English language learners, specifically those who are learning English as a second language (ESL). The book emphasizes the importance of not only learning how to speak English, but also studying grammar, writing, reading, and listening skills. The authors highlight the significance of learning English for immigrants in the United States, particularly those who come from non-English speaking countries. They explain that learning English is essential for various aspects of life, including finding employment and pursuing higher education. The book begins by introducing the concept of grammar and its relevance in everyday life. It emphasizes that grammar is necessary for effective communication and provides rules to guide learners in using the English language correctly. The book is divided into several sections, starting with lessons on the parts of speech, punctuation, phrases, and vocabulary. These lessons aim to provide a solid foundation in grammar and language usage. The book then transitions to lessons on writing, reading, speaking, and listening. It includes lectures and exercises to help learners practice and improve their skills in these areas. The authors have included dialogue practices and written exercises to provide practical application of the lessons. The content of the book is based on the authors' thirty years of experience teaching English worldwide. They have taken into consideration the needs of various types of learners, making the topics relevant and accessible to a wide range of students. Overall, "Good Grammar" is a comprehensive guide that covers essential aspects of English language learning for ESL students. It provides lessons on grammar, sentence construction, writing, reading, speaking, and listening, making it a valuable resource for English language learners.