줄은 몰랐어요

I didn't know that

→ 줄
phrase Rare #25,784
I didn't know that Used to express surprise about an outcome or fact, often translated as “I didn't expect that” or “I never thought that...” The 앞 part describes what the speaker did not expect to happen.
KO: 이렇게 빨리 끝날 줄은 몰랐어요.
EN: I didn't expect it to end this quickly.

이렇게 끝날 줄은 몰랐어요

I didn't think it would end like this.

— 반지의 제왕: 왕의 귀환 (2003)

부인을 만날 줄은 몰랐어요

I didn't expect to meet your wife.

— 레베카 (1940)