Chapter 1: Be Verbs
Unit 01 Present and Past Tense of the Verb "Be" 12
Unit 02 Negative and Interrogative Sentences with the Verb "Be" 18
Unit 03 There is / There are 24

Chapter 2 Regular Verbs
Unit 01 Present Tense of Regular Verbs 40
Unit 02 Past Tense of Regular Verbs 46
Unit 03 Negative Sentences of Regular Verbs 52
Unit 04 Interrogative Sentences with Regular Verbs 58

Chapter 3 Tenses
Unit 01 Progressive Tense 74
Unit 02 Present Perfect Tense 80

Chapter 4 Auxiliary Verbs I
Unit 01 can and be able to 106
Unit 02 may, must 112
Unit 03 have to, should 118

Chapter 5 Auxiliary Verbs II
Unit 01 will, be going to 134
Unit 02 would like to, had better, used to 140

Chapter 6 Sentence Form
Unit 01 Type 1, Type 2 Sentence 156
Unit 02 Type 3 and Type 4 Sentences 162
Unit 03 5-Format Sentence 168

Features of this book

1. Customized grammar learning through step-by-step learning
- The Grammar Mentor Joy Plus series consists of 4 volumes.
Each level consists of 6 chapters, with a total study time of 6 weeks. In particular, Chapters 3 and 6 are structured so that you can review repeatedly with Review and Achievement Tests.
Additionally, a vocabulary list and three mock exams are provided after completing the entire series.

2 Systematic study for descriptive problems
- In particular, the Writing Step prepares you for descriptive questions.

3 Problem-solving learning that requires critical thinking skills, not just rote memorization
- Rather than simple pattern drill problems, previous problems are mixed together to help improve thinking skills.

4. Improve problem-solving skills through repetitive learning.
- Repeated learning is possible with detailed steps.

5 Systematic learning through customized vocabulary and sentences
- You can acquire the vocabulary and sentences you have learned unconsciously by repeatedly presenting them.

6 Grammar study to prepare for middle school basic grammar
- Covers most of the grammar covered in middle school grammar.


7 Learning basic vocabulary through repetitive problem solving
- The vocabulary list provided for each chapter systematically presents frequently used vocabulary.

Structure of this book

Unit
Each chapter is divided into units to enable more in-depth and systematic learning.


Warm-up
This is the step to check the basic contents of the unit before starting full-scale learning.

Start up
We have made it possible to review the basic grammar covered in each unit.

Check up & Writing
It is a step to prepare for descriptive questions, and is composed of questions that require thinking skills rather than a simple list of words.

Level up
It is composed of problems based on the contents of the Unit, which is the final step to cover the contents of each Chapter.

Review Test
It is divided into three chapters, and is designed to review the basic content learned previously.

Achievement Test
It is divided into three chapters and consists of five multiple-choice questions and descriptive questions, so it is designed to prepare you for actual exam questions.

Practice exam
It consists of a total of 3 times, and all the contents of each level are organized into 5-option multiple-choice questions and descriptive questions so that you can check what you have learned.