[Preparation] Building the Basics
Build basic English knowledge before starting to learn
Step 1.
Essential Terms / Step 2.
English word order / Step 3.
English articles

[Chapter 01] ~
Using the verb 'be' to say 'the subject is ~ (thing/person/state)'
Day 001~010 Daily Study & Writing

[Chapter 02] ~does
Speaking English sentences in five representative sentence patterns using various regular verbs
Day 011~020 Daily Study & Writing

[Chapter 03] ~in/doing
Using present tense verbs to say 'always/mostly/often/sometimes ~ is/does'
Day 021~030 Daily Study & Writing

[Chapter 04] ~was/did
Saying 'was/did' with past tense verbs
Day 031~040 Daily Study & Writing

[Chapter 05] ~ will be done
Saying 'will be/will do' with future tense verbs
Day 041~050 Daily Study & Writing

[Chapter 06] to-verb infinitive
Making various options using the 'to-verb infinitive'
Day 051~060 Daily Study & Writing

[Chapter 07] Verb infinitive -ing
Making various options and progressive tenses using the 'verb-ing'
Day 061~070 Daily Study & Writing

[Chapter 08] Auxiliary Verbs
Talking about 'ability, possibility, obligation, and recommendation' with various auxiliary verbs
Day 071~080 Daily Study & Writing

[Chapter 09] Questions on the Six Harmonies
Creating interrogative sentences using six interrogative words and the six W's
Day 081~090 Daily Study & Writing

[Chapter 10] Sentence + Sentence
Add another sentence to make it longer
Day 091~100 Daily Study & Writing

[Appendix] Summary of Key Grammar
Chapters 01-10: A Glance at Key Grammar

This book is designed to be studied in the following flow: '[Preparation] Building Basics → [Chapter 01~100] Learning 100 Core Sentences, 1 Chapter a Day, for 100 Days & Writing 300 Sentences → [Daily Study Check Log] Check Daily Study Completion → [Appendix] Summary of Core Grammar'.

1.
Build a foundation before starting learning
Before we dive into the 100-day, daily English writing program, we'll briefly review the grammar terms you need to know (e.g., nouns, verbs, adjectives, adverbs, etc.) and basic English word order, English articles, etc. in the '[Preparation] Building Basics' section.

2.
Learn 100 key sentences, one per day, for 100 days.
After completing the basic learning, you will learn 100 key sentences, one per day for 100 days, through '[Chapter 01~10] Learn English Writing 1 Chapter a Day'.
The 100 selected English sentences are carefully selected to help you learn basic English grammar, from the verb "be" to interrogative sentences, while also acquiring essential conversational expressions for everyday life.

3.
100 core sentences + 200 written sentences → 300 English sentences in total
After learning one key sentence each day, you will learn in the following order: (1) Write one key sentence three times → (2) Use what you have learned to write two Korean sentences → (3) Create and write your own English sentences freely → (4) Scan the QR code, listen to the MP3 audio, and repeat it.
In this way, you will practice writing, listening, and speaking about 300 sentences over a total of 100 days.

4.
Write a daily study checklist after completing your daily studies.
After completing your daily study, write down the study date in the 'Daily Study Check Log' included at the front of the book and mark (O) whether you have completed the study.
Keeping track of your study progress is one effective way to manage your own study habits.

5.
After completing all the learning, review and summarize key grammar.
After completing the 100-day English writing study, which involves writing one chapter a day, you can review and organize the core English grammar you have naturally learned while writing English sentences through the '[Appendix] Summary of Key Grammar' section.
If you don't remember any part while reading, go back and read it again to reflect on it.