(으)ㄹ 줄 모르다

Doesn't know how to

Explanation

Used to say you don't know or don't have the ability to do something.

Details

Different meaning

(으)ㄹ 줄 알다 can also mean 'I thought'.

친구가 갈 줄 알았어요.
I thought my friend would go.
친구가 가는 줄 알았어요.
I thought my friend was going.
친구가 간 줄 알았어요.
I thought my friend was gone.

Korean Grammar in Use

This pattern expresses whether one doesn't know how, or doesn't have the ability, to do something. When the verb stem ends in a vowel or ㄹ, -ㄹ 줄 모르다 is used, and when the verb stem ends in a consonant, -을 줄 모르다 is used. It corresponds to 'doesn't know how to' in English.

Details

Comparison: