Chapter 1 to-infinitive
Unit 01 Nominal Use of the Infinitive 12
Unit 02 Adjectival Use of the Infinitive 18
Unit 03 Adverbial Use of the Infinitive 24
Unit 04 Idiomatic Expressions of the Infinitive 30

Chapter 2 Gerunds
Unit 01 Use of Gerunds 46
Unit 02 Expressions Using Gerunds 52
Unit 03 Verb + Gerund / Verb + To-Infinitive 58

Chapter 3 Participle
Unit 01 Present Participle 74
Unit 02 Past Participle 80
Unit 03 Participle Phrases 86

Chapter 4 Passive Voice
Unit 01 Active and Passive Voice 112
Unit 02 Various Forms of Passive VoiceⅠ 118
Unit 03 Various Forms of Passive Voice II 124
Unit 04 Passive Voice 130 Things to Watch Out for

Chapter 5 Prepositions
Unit 01 Time Prepositions 146
Unit 02 Prepositions of Place 152
Unit 03 Directional Prepositions 158

Chapter 6 Conjunctions
Unit 01 Coordinating Conjunctions 174
Unit 02 Time, Reason, and Result Conjunctions 180
Unit 03 Conditions, Concessions, and Correlative Conjunctions 186

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.