Master Korean Grammar: ‘-기 위해서’ and ‘-아야겠다’ Explained

Table of Contents

1. Introduction
2. Understanding ‘-기 위해서’
3. Understanding ‘-아야겠다/어야겠다’
4. Practical Applications
5. Common Mistakes
6. Advanced Usage
7. Examples and Exercises
8. Conclusion

1. Introduction

This guide explores two essential Korean grammar patterns: ‘-기 위해서’ and ‘-아야겠다/어야겠다’. These structures are crucial for expressing purpose and intention. Mastering them will significantly enhance your ability to communicate effectively in Korean.

2. Understanding ‘-기 위해서’

Basic Function

‘-기 위해서’ expresses the purpose or reason for an action. It’s similar to “in order to,” “for the purpose of,” or “so that” in English.

Formation Rules

Verb Stem + -기 위해서

Example:

Verb	Verb Stem	-기 위해서 Form	Pronunciation (IPA)	Meaning
공부하다 (gongbuhada) – to study	공부하- (gongbuha-)	공부하기 위해서 (gongbuhagi wihaeseo)	/kʊŋbuɦagi wiɦɛsʌ/	in order to study

Common Usage Patterns

• Expressing Purpose: 저는 한국어를 배우기 위해서 한국에 왔어요. (jeoneun hangugeoreul baeugi wihaeseo hanguge wasseoyo) – I came to Korea in order to learn Korean. /kʌnʌn haŋgugʌrɯl pɛugi wiɦɛsʌ haŋgugɛ wassʌjo/
• Explaining Reason: 건강을 위해서 운동해요. (geon gangeul wihaeseo undonghaeyo) – I exercise for my health. /kʌngangɯl wiɦɛsʌ unduŋhɛjo/

3. Understanding ‘-아야겠다/어야겠다’

Basic Function

‘-아야겠다/어야겠다’ expresses the speaker’s intention or resolution to do something. It’s similar to “I must,” “I have to,” “I should,” or “I will” in English, but carries a stronger sense of personal obligation or necessity.

Formation Rules

• Verbs with vowel stems: Verb Stem + -아야겠다 (e.g., 가다 (gada) – to go → 가야겠다 (gayagetda) – I must go)
• Verbs with consonant stems: Verb Stem + -어야겠다 (e.g., 먹다 (meokda) – to eat → 먹어야겠다 (meogeoyagetda) – I must eat)

Common Usage Patterns

• Expressing Intention: 저는 더 열심히 공부해야겠어요. (jeoneun deo yeolsimhi gongbuhaeyagetseoyo) – I must study harder. /tʌ nʌn dʌ jʌlʃimi kʊŋbuɦɛjagɛssʌjo/
• Indicating Necessity: 지금 가야겠어요. (jigeum gayagetseoyo) – I have to go now. /ʧigɯm kajagɛssʌjo/

4. Practical Applications

‘-기 위해서’ in Daily Conversations

Examples:

• 돈을 벌기 위해서 일해요. (doneul beolgi wihaeseo ilhaeyo) – I work to earn money. /tonɯl pʌlgi wiɦɛsʌ irɛjo/
• 시험을 잘 보기 위해서 공부해야 돼요. (siheomeul jal bogi wihaeseo gongbuhaeya dwaeyo) – I have to study in order to do well on the test. /ʃihʌmɯl ʧal pogi wiɦɛsʌ kʊŋbuɦɛja dwɛjo/

‘-아야겠다/어야겠다’ in Various Situations

Examples:

• 배고파서 밥을 먹어야겠어요. (baegopaseo babeul meogeoyagetseoyo) – I’m hungry, so I should eat. /pɛgopasʌ babɯl mʌgʌjagɛssʌjo/
• 늦었으니까 택시를 타야겠어요. (neujeosseunikka taeksireul tayagetseoyo) – I’m late, so I’ll have to take a taxi. /nɯdʒʌsːɯnika tʰɛkʃirɯl tʰajagɛssʌjo/

5. Common Mistakes

Mistakes with ‘-기 위해서’

• Using with nouns: ‘-기 위해서’ is used with verbs, not nouns. Instead of “*건강 위해서,” use “건강을 위해서.”

Mistakes with ‘-아야겠다/어야겠다’

• Incorrect conjugation: Pay attention to vowel vs. consonant stems.

6. Advanced Usage

Combining Both Patterns

Example:

건강해지기 위해서 매일 운동해야겠어요. (geonganghaejigi wihaeseo maeil undonghaeyagetseoyo) – In order to become healthy, I will have to exercise every day. /kʌŋgaŋhɛdʒigi wiɦɛsʌ mɛil unduŋhɛjagɛssʌjo/

7. Examples and Exercises

Exercise 1: ‘-기 위해서’

Complete the sentences:

1. 한국어를 배우_______ 한국에 왔어요.
2. 돈을 벌_______ 일해요.

Exercise 2: ‘-아야겠다/어야겠다’

Choose the correct form:

1. 지금 (가야겠어요/가아야겠어요).
2. 밥을 (먹어야겠어요/먹아야겠어요).

8. Conclusion

Understanding and correctly using ‘-기 위해서’ and ‘-아야겠다/어야겠다’ are essential for expressing purpose and intention in Korean. These patterns allow for more nuanced and natural communication. Continued practice will solidify your understanding and improve your fluency.