Means not knowing how to do something or lacking the ability to do it
When to use
Expressing ability, Not knowing how, Describing negative experience
The nuance
Attach -(으)ㄹ 줄 몰라요 to the verb stem to say 'do not know how to do something' or 'lack the ability.' Use -을 줄 몰라요 if the stem ends with a consonant, -ㄹ 줄 몰라요 if it ends with a vowel.
