Korean Grammar Point
~기로 하다 [giro hada] (Decide to)

~기로 하다 [giro hada] (Decide to)

Short explanation:

Used to express the decision to do something.

Formation:

Verb stems + 기로 하다

Examples:

나는 매일 아침 운동하기로 결정했어요, 그래서 날씨가 춥더라도 매일 아침을 운동하고 있어요.
Naneun maeil achim undonghagiro gyeoljeonghaesseoyo, geuraeseo nalssiga chupdeorado maeil achimeul undonghago isseoyo.
I have decided to exercise every morning, so I exercise every morning even if the weather is cold.
우리 모두 내년에 함께 여행 가기로 했어요, 그래서 지금부터 돈을 모으기로 했어요.
Uri modu naenyeone hamkke yeohaeng gagiro haesseoyo, geuraeseo jigeumbuteo doneul moeugiro haesseoyo.
We all decided to go on a trip together next year, so we decided to start saving money from now on.
그는 올해 안에 흡연을 끊기로 결정했어요, 그래서 그는 담배를 더 이상 사지 않기로 했어요.
Geuneun olhae ane heubsyeoneul kkeungiro gyeoljeonghaesseoyo, geuraeseo geuneun dambaeleul deo isang saji angiro haesseoyo.
He decided to quit smoking within this year, so he decided not to buy cigarettes anymore.
회사는 직원들의 안전을 위해 매주 금요일 마스크를 착용하기로 했어요.
Hoesaneun jigweondeul-ui anjeon-eul wihae maeju geum-yoil maskeu leul chak-yonghagiro haesseoyo.
The company decided to wear masks every Friday for the safety of its employees.

Long explanation:

'~기로 하다 [giro hada]' is a grammatical structure in Korean used when expressing the idea of deciding to do something. This can be used when referring to personally made decisions, decisions made with someone else, or even when referring to pre-arranged plans or established rules. It conveys the idea of resolution or determination to carry out an action in the future.

Detailed Grammar notes:

Processing keyword: ~기로 하다 [giro hada] (Decide to)

Korean Grammar Point: ~기로 하다 [giro hada] (Decide to)

Understanding the Grammar Point: ~기로 하다 (Decide to)

1. Introduction

The Korean grammar pattern ~기로 하다 is a commonly used expression that means "to decide to do something." It's essential for expressing decisions, intentions, or resolutions in everyday conversation. Mastering this grammar point will help you communicate your plans and decisions effectively in Korean.


2. Core Grammar Explanation

Meaning

~기로 하다 is used when the speaker decides or resolves to take a particular action. It conveys the idea of making a decision to do something.

Structure

Formation:

  1. Verb Stem + -기로 하다

Formation Diagram

Let's break down the formation step by step:

  1. Identify the verb's dictionary form (infinitive).
    • Example verb: 가다 (to go)
  2. Remove the verb ending 다 to find the verb stem.
    • Verb stem:
  3. Add -기로 하다 to the verb stem.
    • Combined form: + 기로 하다 = 가기로 하다

Conjugation

The verb 하다 in ~기로 하다 is conjugated according to the tense and politeness level.

Present Tense

  • Informal Polite: -기로 해요
  • Formal Polite: -기로 합니다
    Tense Politeness Level Conjugation Translation
    Present Informal Polite 가기로 해요 I decide to go
    Present Formal Polite 가기로 합니다 I decide to go

Past Tense

  • Indicates a past decision.
    Tense Politeness Level Conjugation Translation
    Past Informal Polite 가기로 했어요 I decided to go
    Past Formal Polite 가기로 했습니다 I decided to go

Future Tense

  • Less common; implies a plan to decide.
    Tense Politeness Level Conjugation Translation
    Future Informal Polite 가기로 할 거예요 I will decide to go
    Future Formal Polite 가기로 할 것입니다 I will decide to go

3. Comparative Analysis

Comparing ~기로 하다 with Similar Grammar Points

~(으)려고 하다 (Intend to)

  • Meaning: Indicates intention or plan to do something.
  • Usage: Focuses on the speaker's intention, not necessarily a firm decision. Example:
  • 한국에 가려고 해요.
    I intend to go to Korea.

~기로 결정하다 (Decide to)

  • Meaning: Similar to ~기로 하다 but more formal and emphasizes the act of deciding.
  • Usage: Used in formal contexts or written language. Example:
  • 회사에서 새로운 정책을 도입하기로 결정했습니다.
    The company decided to implement a new policy. Comparison Table:
    Grammar Point Formality Nuance
    ~기로 하다 Casual to Formal General decision or resolution
    ~(으)려고 하다 Casual to Formal Intention or plan
    ~기로 결정하다 Formal Formal decision after consideration

4. Examples in Context

Sentence Examples

Example 1: Daily Life

  • 오늘부터 다이어트를 하기로 했어요.
    I decided to start dieting from today.

Example 2: Future Plans

  • 졸업 후에 유학을 가기로 했습니다.
    I have decided to study abroad after graduation.

Example 3: Group Decision

  • 친구들과 매주 만나기로 했어요.
    My friends and I decided to meet every week.

Example 4: Formal Context

  • 회사에서 직원 교육을 강화하기로 했습니다.
    The company has decided to strengthen employee training.

Formal vs. Informal Speech

  • Informal:
    • 내일 등산하기로 했어.
      I decided to go hiking tomorrow.
  • Informal Polite:
    • 내일 등산하기로 했어요.
  • Formal Polite:
    • 내일 등산하기로 했습니다.

Spoken vs. Written Language

  • Spoken:
    • 이번 주말에 뭐 하기로 했어?
      What did you decide to do this weekend?
  • Written:
    • 정부는 세금을 인상하기로 했다.
      The government decided to increase taxes.

5. Cultural Notes

Cultural Relevance

In Korean culture, expressing decisions may also reflect on group harmony and social relationships. Decisions are often discussed collectively, and using ~기로 하다 can indicate a mutual agreement.

Levels of Politeness

Choosing the appropriate politeness level is crucial:

  • Casual: Used among close friends and peers.
  • Informal Polite: Default form for everyday conversations.
  • Formal Polite: Used in formal settings, respect towards elders or superiors.

Idiomatic Expressions with ~기로 하다

  • 결심하기로 하다: To make up one's mind. Example:
    • 새해에는 담배를 끊기로 결심했어요.
      I made up my mind to quit smoking in the new year.
  • 약속하기로 하다: To promise to do something. Example:
    • 다시 만나기로 했어요.
      We promised to meet again.

6. Common Mistakes and Tips

Common Mistakes

  1. Incorrect Attachment of -기로 하다
    • Incorrect: 먹다기로 하다
    • Correct: 먹기로 하다 Tip: Ensure -기로 하다 is directly attached to the verb stem.
  2. Confusing with ~고 하다
    • Incorrect Usage: 시험이 어렵고 했어요.
    • Correct Usage: 시험이 어렵다고 했어요.
      (They) said the exam is difficult. Tip: Remember that ~고 하다 is used in indirect speech, not for decisions.

Learning Strategies

  • Mnemonic Device: Think of "기로" as "key to" making a decision.
  • Practice Makes Perfect: Create your own sentences expressing decisions you make daily.

7. Summary and Review

Key Takeaways

  • ~기로 하다 is used to express a decision or resolution to perform an action.
  • Attach -기로 하다 directly to the verb stem without any modifications.
  • Conjugate 하다 according to tense and politeness.
  • Be mindful of similar grammar patterns to avoid confusion.

Quick Recap Quiz

  1. How do you say "We decided to watch a movie tonight" in Korean?
    • Answer:
      오늘 밤에 영화 보기로 했어요.
  2. What is the polite formal past tense of -기로 하다 when attached to 먹다 (to eat)?**
    • Answer:
      먹기로 했습니다.
  3. Fill in the blank:
    저는 내일부터 일찍 일어나___ ___.
    (I decided to wake up early starting tomorrow.)
    • Answer:
      기로 했어요.

By understanding and practicing ~기로 하다, you enhance your ability to express decisions and plans confidently in Korean. Keep practicing with different verbs and contexts to become more fluent in using this essential grammar point.

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