whenever
例句:
每逢有空袭就得叫孩子们到楼梯底下躲避.
The children had to got under the stairs whenever there was an air-raid.
每逢下雨屋顶就漏雨.
The roof leaks whenever it rains.
每逢他晚归,妻子总要追问他晚上到哪里去了.
Whenever he comes in late his wife cross-examines him about where he's spent the evening.