This book aims to help fourth-grade students understand the exercises contained in their Student Book and Workbook and to guide them with answers and examples.

In each lesson, the following are provided:
- the grammar that covers the specific lesson
- vocabulary
- the instructions for the exercises from the Student Book and Workbook (including those found in the Appendices and Self-Assessment Tests), their translations for better understanding at this level, and their answers
- useful information for some of the exercises
- the texts of the listening exercises and their translations
- comprehension questions for the texts and suggested answers. Additionally, after chapters 4, 7, and 10, there are answers to the corresponding review tests.