Level 1 · word 45 of 20,000

when

/ˈwen/ American
  • conj. 当...的时候
  • adv. 何时, 什么时候
Definition
  • conj. at the moment or during the time that something happens
  • adv. at what time
Example
Call me when you arrive at the train station.
你到火车站的时候给我打电话。