英语高手进啊345

来源：百度知道 编辑：UC知道 时间：2024/06/03 04:06:49
We were having a test in our classroom this time yesterday______a bird flew in through the open window
A.when B.while

我觉得两个都可以么。。。。。

A.
when这里是“突然这时”的意思。
如果用while,那这句就应该这样写We were having a test in our classroom this time yesterday while a bird was flying in through the open window .因为while连接的是两个同时发生的事。

b

A
when后面跟短暂性动词，while后跟持续性动作
而一只鸟飞进开着的窗，是短时间的动作