DEEP: Progress to Proficiency

The textbook package supports learning through interactive and multimedia content that helps students not only master the topics, but also assess their learning. The twenty-eight chapters are written in a modular format. Each module ends with a detailed summary to help students learn. The authors hope that this book will be useful to readers, students, and the general public. This book was created based on the author's experience comparing English grammar books as well as his experience teaching TOEFL tips and tricks.