When to use time; moment in Korean
Korean: 때[ ttae ]

When to use it
(때) means "time" or "moment." It is often used to talk about when something happens, like "when I go home" or "when it rains." You will hear it a lot in everyday Korean.
Example sentences
집에 갈 때 우산을 가져가요.
I take an umbrella when I go home.
학교에 올 때 버스를 타요.
I take the bus when I come to school.
잘 때 불을 꺼요.
I turn off the light when I sleep.
비 올 때는 밖에 안 나가요.
I do not go outside when it rains.
물건을 살 때 카드를 써요.
I use a card when I buy things.
여행할 때 사진을 많이 찍어요.
I take a lot of pictures when I travel.