A sentence foundation
Unit 01 8 Parts of Speech and Sentence Components
Unit 02 Type 1 and Type 2 sentences
Unit 03 Type 3 and Type 4 sentences
Unit 04 5-type sentences
Unit Assessment Questions [Unit 01-04]

Types of B sentences
Unit 05 Imperatives, Proposals, and Exclamations
Unit 06 Declarative Sentences, Interrogative Sentences (Additive Questions, Indirect Questions)
Unit Assessment Questions [Unit 05-06]

C noun, article
Unit 07 Plural of countable nouns
Unit 08 Plural of Uncountable Nouns
Unit 09 Possessive Case of Nouns
Unit Assessment Questions [Unit 07-09]
Unit 10 Indefinite Articles (a, an) and Definite Articles (the)
Unit 11 Use of articles to be careful of
Unit Assessment Questions [Unit 10-11]

D pronoun
Unit 12 Demonstrative pronouns this (these), that (those), it
Unit 13 Reflexive Pronouns
Unit 14 Indefinite Pronouns
Unit Assessment Questions [Unit 12-14]

E tense
Unit 15 Types of Tenses
Unit 16 Present Tense, Past Tense
Unit 17 Past Verbs - Past Participle Irregular Conjugation Table
Unit 18 Future Tense
Unit Assessment Questions [Units 15-18]
Unit 19 Progressive Tense
Unit 20 Perfect Tense
Unit Assessment Questions [Unit 19-20]

F auxiliary verb
Unit 21 Characteristics of auxiliary verbs and auxiliary verb do
Unit 22 can (could), may (might)
Unit 23 will (would), must (have to)
Unit 24 shall, should, ought to, had better (not)
Unit 25 used to, would, auxiliary verb + have + past participle
Unit Assessment Questions [Units 21-25]

G passive voice
Unit 26 Concept and Form of Passive Voice
Unit 27 Passive Tenses
Unit 28 Passive voice of auxiliary verbs and verb phrases
Unit Assessment Questions [Unit 26-28]
Unit 29 Passive Voice in Forms 4 and 5
Unit 30: Passive voice and idiomatic expressions to watch out for
Unit Assessment Questions [Unit 29-30]

H adjective
Unit 31 Types, usage, and word order of adjectives
Unit 32 Indefinite Quantifiers
Unit 33 Expressions of investigative adjectives
Unit Assessment Questions [Unit 31-33]

I adverb
Unit 34 Adverb Forms
Unit 35 The Role and Position of Adverbs
Unit 36 ​​Other important adverbs
Unit Assessment Questions [Unit 34-36]

J comparative
Unit 37: Won-Gap
Unit 38 Comparative and Superlative Forms
Unit 39 Comparatives
Unit 40 Superlative
Unit Assessment Questions [Units 37-40]

K conjunction
Unit 41 Coordinating Conjunctions
Unit 42 Correlative Conjunctions
Unit 43 Subordinating Conjunctions Leading Noun Clauses
Unit 44 Subordinating Conjunctions Leading Adverbial Clauses
Unit 45 Conjunctions
Unit Assessment Questions [Units 41-45]

L preposition
Unit 46 Prepositions of Time
Unit 47 Prepositions of Place
Unit 48 Direction and Other Prepositions
Unit 49 Verb + Preposition
Unit 50 Adjectives + Prepositions, Prepositions to Watch Out for
Unit Assessment Questions [Units 46-50]

M infinitive
Unit 51 Nominal Use of the Infinitive
Unit 52: Adjectival Use of the Infinitive
Unit 53: Adverbial Use of the Infinitive
Unit Assessment Questions [Unit 51-53]
Unit 54 Infinitive, the semantic subject of the to-infinitive
Unit 55: Tense, Negation, Passive Voice, and Pronunciation of the Infinitive
Unit 56 Idiomatic Expressions of the Infinitive
Unit Assessment Questions [Unit 54-56]

N gerund
Unit 57 Gerunds 104
Unit 58 Gerunds and to-infinitives used as objects of verbs
Unit 59 Gerunds and Idioms Used as Objects of Prepositions
Unit Assessment Questions [Unit 57-59]

O participle
Unit 60 Types and Functions of Participles
Unit 61 Present participles, gerunds, and participles expressing emotions
Unit Assessment Questions [Unit 60-61]
Unit 62 Participle Phrases
Unit 63 Participle phrases to watch out for
Unit Assessment Questions [Unit 62-63]

P relationship
Unit 64 Relative Pronouns
Unit 65 Relative Pronouns that, what
Unit 66 Continuous use and omission of relative pronouns
Unit Assessment Questions [Unit 64-66]
Unit 67 Relative Adverbs
Unit 68 Continuous use and omission of relative adverbs
Unit 69: Complex Relative Pronouns and Complex Relative Adverbs
Unit Assessment Questions [Unit 67-69]

Q subjunctive
Unit 70 Past Subjunctive
Unit 71 Past Perfect Subjunctive
Unit 72 Various forms of subjunctive mood
Unit Assessment Questions [Unit 70-72]

R agreement, speech
Unit 73 Subject and Verb Agreement in Number
Unit 74 Tense Agreement
Unit 75: Speaking
Unit Assessment Questions [Unit 73-75]

S special syntax
Unit 76 Inversion
Unit 77 Emphasis
Unit 78 Omission, Negative Constructions, Appositives
Unit Assessment Questions [Unit 76-78]

1.
English Grammar Concepts + Concept Check Questions - Learn English grammar with friendly concept explanations and concept check questions!

[A Complete Guide to English Grammar Concepts]
· You can easily understand the grammar you will learn in each unit through tables, figures, and examples.
· Clear, core grammar video lectures make it easier to understand concepts.
· Blue box: Explanation of difficult terms
Red box: Additional explanation of the concept
Purple box: Description of exceptions
[Concept Check Question]
· You can fully master the concepts you have learned through various concept verification problems.
· Includes mixed concept problems that allow you to study by comparing two or more concepts.
[Vocabulary & Expressions]
You can study the key vocabulary and expressions in the unit again.

2.
Unit Assessment Questions - Practice the grammar concepts you've learned with school exam questions!

[Grammar Type Problem]
· You can evaluate your grammar concepts learned through question types prepared for school exams.
· Includes various school exam-style questions, such as choosing the correct word to fill in the blank and choosing a grammatically incorrect sentence.
[Difficulty Problems + Descriptive Problems]
· You can broadly improve your skills by solving descriptive questions on the grammar concepts studied in the unit.
· Difficulty problems are included in a variety of formats to help students develop the ability to deal with difficult school exam questions.
[CSAT Types + CSAT Preview]
· Through the 'College Scholastic Ability Test Type' questions, you can study the types of grammar that will appear on the College Scholastic Ability Test in advance.
· You can prepare for various types of CSAT grammar through the 'CSAT Preview' questions.

3.
Practice Tests - Prepare for school exams perfectly with mock tests for each unit!

[Frequently Asked Grammar Questions by Unit]
· You can sufficiently prepare for school exams with multiple-choice and descriptive questions on grammar concepts for each unit.
· We have included high-difficulty questions specifically to help you develop the ability to deal with difficult internal exam questions.

4.
Workbook - Review the grammar concepts and vocabulary you've learned!

[Workbook for reviewing concepts by unit]
· Practice what you learned previously with problems corresponding to each unit
You can learn it over and over again.
· Grammar review questions are structured in a similar format to concept confirmation questions.

5.
Clear and clear explanations unique to Zaistory - Improve your skills with easy-to-understand, friendly explanations!

[Friendly explanations that are easy to understand even on your own]
· You can easily check the correct answer by unit.
· We have explained the incorrect problems in an easy-to-understand manner so that you can clearly understand them.
· We provide Korean translations for all English options to help you understand the questions.

Easy and quick concept understanding + most internal exam questions

· A comprehensive summary of English grammar concepts from the 2022 revised textbooks (10 types)
· Special lecture on clear grammar concepts - QR code
· Rich concept verification problems - Memorize concepts quickly with a variety of problems.
Unit evaluation questions - internal exam preparation + CSAT type + CSAT sample questions
· Practice exam - Internal exam preparation + descriptive + high-difficulty questions
· Separate Appendix Workbook - Concept Check + Grammar Review Questions

A Special Study Method for Getting a Perfect Score in Middle School English Grammar

1.
Study middle school textbook grammar systematically and learn representative examples that help you understand the concepts.
2.
Grammar concepts are easily and clearly understood through QR code video lectures.
3.
Use concept check questions to confirm that you have accurately understood the grammar concepts you studied and practice them.
4.
Learn vocabulary and expressions from concepts and problems through the 'Vocabulary & Expressions' corner.
5.
Develop the ability to solve difficult problems through multiple-choice, descriptive, and high-difficulty questions in preparation for the unit assessment.
6.
Test your understanding of grammar concepts through the Workbook.
7.
Make sure you understand the problems you got wrong so you don't get the same concepts wrong again.