Essential English Grammar by Raymond Murphy (Second Edition, Cambridge University Press). This self-study reference and practice book is designed for elementary students of English, providing clear explanations and exercises to help learners build a strong foundation in English grammar. With easy-to-understand lessons and detailed examples, it covers essential grammar rules and usage. The included answers make it perfect for self-assessment and independent learning. Whether you're just starting your English language journey or looking to reinforce your skills, this book is an excellent resource for mastering English grammar effectively!