I phoneme
01 ⅠPhonological System ⅠVowel System
02 ⅠPhonological System Ⅰ Consonant System
· Skill improvement issues
03 ⅠPhonetic ChangesⅠ Rules for Final Sounds of Syllables
04 ⅠPhoneme ChangeⅠPhoneme Assimilation
05 ⅠPhoneme ChangesⅠPhoneme Contraction, Omission, and Addition
· Skill improvement issues
II Words, Vocabulary
06 ⅠPart of Speech ⅠNoun
07 ⅠParts of Speech Ⅰ Verbs
08 ⅠPart of Speech Ⅰ Modifiers
09 ⅠParts of Speech Ⅰ Relative Words and Independent Words
· Skill improvement issues
10 ⅠWord StructureⅠMorphemes, Roots, and Affixes
11 ⅠWord StructureⅠSingle Words and Compound Words
12 System and aspects of vocabulary
13 ⅠSemantic Relationships of VocabularyⅠSynonyms and Antonyms
14 ⅠSemantic relationships of vocabulary Ⅰ Hierarchical relationships, polysemy relationships, and homonymous relationships
· Skill improvement issues
Sentence III
15 ⅠSentence Components Ⅰ Main Components
16 ⅠSentence ComponentsⅠ Auxiliary Components and Independent Components
17 ⅠSentence Structure Ⅰ Connected Sentences
18 ⅠSentence Structure Ⅰ Embedded Sentences and Embraced Sentences
· Skill improvement issues
19 Ⅰ Grammar Elements Ⅰ Ending Expressions, Honorific Expressions, Time Expressions
20 Ⅰ Grammar Elements Ⅰ Passive and Causative Expressions
21 Ⅰ Grammar Elements Ⅰ Negative Expressions, Ambiguous Expressions
· Skill improvement issues
IV Language and Korean
22 The nature and function of language
23 ⅠLanguage StandardsⅠ Korean Spelling and Standard Language Regulations
24 Context of the discourse
25 The Principles and Values ​​of Hangul's Creation
· Skill improvement issues

Skill completion problem
1st Unit Ⅰ Comprehensive Problems
2nd Unit ⅠⅠ Comprehensive Problems
3rd Unit ⅠⅠⅠ Comprehensive Problems
4th Unit ⅠV Comprehensive Problems
[Book within a Book] Answers and Explanations

Features of this book
A grammar book that perfectly organizes grammar concepts with abundant problems.

· Presentation of 25 essential grammar concepts
: 25 carefully selected essential grammar concepts neatly organized for easy understanding.
Demonstrate how concepts are applied in real-world examples to help you understand them quickly and easily.
· Provides a wealth of step-by-step problems
: It includes step-by-step problems ranging from simple concept confirmation questions to actual exam questions for internal exam preparation and integrated problems for in-depth learning.
We have included not only middle school grade types but also academic achievement assessments and past college entrance exam questions, allowing you to apply previously understood concepts while solving a variety of problems.

· Presentation on 'Filling the Confusing 1%'
: We have presented frequently misunderstood content along with the problem so that you can clearly understand even the most confusing problem.
· Provides 'Skill Completion Problems', which are comprehensive problems for each unit.
: We have provided additional comprehensive problems for each unit to help you not only prepare for your internal exams but also perfect your grammar skills.