-(으)ㄴ/는 줄 알다/모르다

-(으)ㄴ/는 줄 알다 = 'I thought (wrongly) that …'; -(으)ㄴ/는 줄 모르다 = 'I didn't know that …'.

추측·판단Guessing & judging

Han: The 'mistaken belief' meaning is past: 알았어요 (and the speaker now knows better).

Examples

이 가방이 이렇게 비싼 줄 몰랐어요.I didn't know this bag was so expensive.

민수 씨가 벌써 결혼한 줄 몰랐어요.I didn't know Minsu was already married.

오늘이 월요일인 줄 알았어요.I thought today was Monday.

-(으)ㄴ/는 줄 알다/모르다vs-(으)ㄴ/는지 알다-는지 알다 asks whether you know something; -는 줄 알다 reports a belief (often wrong): 어디 사는지 알아요? vs 서울에 사는 줄 알았어요.

V+는 줄

A+(으)ㄴ 줄

past V+(으)ㄴ 줄

future+(으)ㄹ 줄+알다/모르다

오다 → 오는 줄 알았어요, 비싸다 → 비싼 줄 몰랐어요

Wrong: ~~그 영화가 재미있는 줄 알아요.~~

Right: 그 영화가 재미있는 줄 알았어요.

The 'mistaken belief' meaning is past: 알았어요 (and the speaker now knows better).

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