TOPIK 1Connectors

-아서/어서

Reason/Sequence -아서/어서 (because, so, and then)

Expresses reason, cause, or sequential actions

Description

-아서/어서 connects clauses to show reason ('because') or sequence ('and then'). Use -아서 after stems with ㅏ or ㅗ vowels, -어서 for others.

Usage

Used to explain why something happens or to describe actions in sequence. Cannot be used with commands or suggestions in the second clause.

Formation Rules

  • 1Stems with ㅏ/ㅗ + 아서
  • 2Other stems + 어서
  • 3하다 → 해서

Tips

  • 💡The subject must be the same in both clauses
  • 💡Cannot use with imperative or propositive endings
  • 💡Different from -니까 which can be used with commands

Example Sentences

배가 고파서 밥을 먹었어요.

Baega gopaseo babeul meogeosseoyo.

I was hungry, so I ate.

만나서 반갑습니다.

Mannaseo bangapseumnida.

Nice to meet you. (Meeting you, I'm happy)

집에 가서 쉴 거예요.

Jibe gaseo swil geoyeyo.

I will go home and rest.

Related Patterns

-고TOPIK 1

Connector -고 (and, then)

-지만TOPIK 1

Contrast Connector -지만 (but, however)

-(으)면TOPIK 1

Conditional -(으)면 (if, when)

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