- (으)ㄴ 지 얼마나 됐어요?: How long has it been since...
- 다가: Movement from one action/state to another
- ~(는/ㄴ)다: Plain speech style
- ~(으)ㄴ 지 [time span](이/가) 됐어요.: It has been ... since
- ~(으)ㄴ/는지 알다/모르다: Know/don't now whether
- ~는 중이다: In the middle of
- ~대요/(이)래요: Hearsay
- ~게요: Asking about purpose