What happened to Tom?He was crossing the street ____ a motorbike hit him from behind.A.while B.when C.until D.because答案是B我选的是A 不是进行时用while吗

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/15 15:19:22

What happened to Tom?
He was crossing the street ____ a motorbike hit him from behind.
A.while B.when C.until D.because
答案是B我选的是A 不是进行时用while吗

……
这里的when=at that time
在那个时候
而且 while必须用在两者都是延续性动词的情况下
hit不是