When to use to fall asleep in Korean
Korean: 잠들다[ jam-deul-da ]

When to use it
'To fall asleep' (잠들다) means to begin sleeping. Use it when someone changes from being awake to sleeping. You can use it in everyday situations for people or animals, such as at home, on the bus, or in class.
Example sentences
저는 밤 열 시쯤 잠들어요.
I fall asleep around ten at night.
아기는 엄마 노래를 듣고 잠들었어요.
The baby fell asleep while listening to Mom's song.
수업 시간에 잠들면 안 돼요.
You must not fall asleep during class.
버스에서 잠들어서 한 정거장 더 갔어요.
I fell asleep on the bus, so I went one stop too far.
공원 벤치에서 잠든 고양이를 봤어요.
I saw a cat asleep on a park bench.
아빠는 TV를 보다가 소파에서 잠들었어요.
Dad fell asleep on the sofa while watching TV.