( )we were having breakfast,he came in.

来源：百度知道 编辑：UC知道 时间：2024/09/26 10:44:17
( )we were having breakfast,he came in. A.while B.when C.after 选哪个？为什么？谢谢。

选A
首先排除C，要是用after，前后应当一致
对于while和when，由when引导的时间状语从句，主句用过去进行时，从句应用一般过去时；如果从句和主句的动作同时发生，两句都用过去进行时的时候，多用while引导
简单点说就是 while we were having breakfast,he came in.
或者
when he came in，we were having breakfast。
O(∩_∩)O~

选when. 这句话的意思是:当我们正在吃早餐时,他进来了.选择时要注意区分when和while,它们都有当...时的意思,但when侧重于时间点,而while在时间上可以延续,另外它还有转折意味,所以排除.after就不用说了,它没这个用法. 所以选when.