To, until, as far as: 까지

까지 can be attached to a noun to say ‘to/until/as far as’ a place or time:

8시부터 2시까지 에 있을 거에요.
I will be in the office from 8am until 2pm.

공원에 도달 할 때까지 계속 직진해 가세요.
Keep going straight until you reach the park.

자정까지 돌아와세요.
Please come back before/by midnight.

지금까지 3장만을 읽었어요.
So far I’ve only read three chapters.

언제까지 숙제 제출해야 되요?
When do we have to submit the homework?
(lit. until when do we submit the homework)

처음부터 끝까지, 이 책을 읽는 것을 어려웠어요.
From start to finish, reading this book was difficult.

새벽까지 컴퓨터 게임을어요.
Until dawn I was playing computer games.

지난 밤 늦게까지 공부했어요.
I studied ’til late last night.