Three Times, Three Forms
When a verb describes a noun in Korean, the verb changes its shape based on when the action happens.
Before you choose an ending, first identify the noun you want to describe, then ask yourself:
Is this action happening now (or regularly)?
Is it already finished?
Or is it something that will happen in the future?
The Three Forms
Korean uses three distinct verb endings to show the time of the action:
Present / Repeated: -는
Finished / Past: -(으)ㄴ
Future / Not yet done: -(으)ㄹ
Present and Repeated Actions (-는)
Use -는 for actions that are happening right now, or actions that happen regularly.
Example: 읽다 + 책
읽는 책 : the book I am reading
민호가 읽는 책 : the book Minho is reading
Example: 만나다 + 사람
만나는 사람 : the person I am meeting
자주 만나는 사람 : the person I often meet
Notice that the verb stem simply attaches -는 , and it immediately describes the noun that follows it.
Finished Actions (-(으)ㄴ)
Use -(으)ㄴ for actions that are already completed.
Example: 읽다 + 책
읽은 책 : the book I read
민호가 읽은 책 : the book Minho read
Example: 가다 + 곳
간 곳 : the place I went
작년에 간 곳 : the place I went last year
Form Rule: If the verb stem ends in a consonant, attach -은 (읽은). If it ends in a vowel, attach -ㄴ at the bottom (간).
Future and Intended Actions (-(으)ㄹ)
Use -(으)ㄹ for actions that have not happened yet, plans, or potential actions.