Korean grammar - To know/don't know how to - (으)ㄹ 줄 알았다/몰랐다

To know/don't know how to - (으)ㄹ 줄 알았다/몰랐다

Pattern: Verb stem + (으)ㄹ 줄 알았다/몰랐다

The pattern Verb stem + (으)ㄹ 줄 알았다/몰랐다 is used to express ability to or knowledge of (or lack thereof) how to do something.

This pattern is similar to (으)ㄹ 수 있다/없다 although that is more 'to possess an ability' while 줄 알았다 is 'to know how to'.

Examples:
	그것을 할 줄 알아요? Do (you) know how to do that?
	저는 그것을 할 줄 알아요. I know how to do that.
	저는 그것을 할 줄 몰라요. I don’t know how to do that.
	민수 김밥을 만들 줄 몰라요. Minsu doesn’t know how to make kimbap.
	소영이는 영어를 할 줄 모르는 것 같아요. Seyoung doesn't seem to be able to speak English.
	소영이는 영어를 할 줄 알는 것 생각이 안 나요. Seyoung does not seem to speak English.
	한국말로 욕을 할 줄 알아요? Do (you) know how to swear in Korean? 욕하다 means 'to swear'
	동생은 수영할 줄 알아요? Does (your) younger brother know how to swim?
	냉면을 맛있게 끓일 줄 알아요. (I) know how to cook a tasty cold noodle.
	생일케이크를 잘 만들 줄 몰라요. (I) don’t know how to make a birthday cake well.
	그는 차를 운전할 줄 모르는 것 같아요. He doesn't seem to know how to drive a car.
	그런데 오토바이를 운전할 줄 몰라요. But (I) don’t know how to ride a motorbike.
	이 기계를 사용할 줄 알아요? Do (you) know how to use this machine?
	수영할 줄 알아요? Do (you) know how to swim?
	일본어를 할 줄 몰라요. (I) don’t know how to speak Japanese.
	이 기계를 쓸 줄 몰라요. (I) don't know how to use this machine.
	젓가락을 쓸 줄 아세요? 네, 쓸 줄 알어요. Do (you) know how to use chopsticks? Yes, (I) know how to use (them).