什么时态中when表示就在此时，什么时态中when表示就在此时进行时态或现象

什么时态中when表示就在这里时？

进行时态或大多数情况下以后时态

1.was/were doing +when 意思为“就在这时，已经在这时”。

如：

I was walking in the street when someone called me from behind. 我已经在街上走，就在这时有人从后面叫我。

They were discussing the problem when the teacher came in. 他们已经在讨论问题，就在这时老师进来了。

2.was/were about to do...when 意思为 “正要/正准备做某事，就在这时……”。

如：

She was about to go out when an unexpected visitor came. 她正准备出去，这时来了一位不速之客。

We were about to set out when it began to rain. 我们正要动身，就在这时启动下雨了。

3.be+表示状态的介词短语+when意思为 “已经在做某事，就在这时……”。

如：

They were at work in the office that afternoon when a big fire broke out.那天下午他们已经在办公室工作，就在这时一场大火出现了。

We were on duty in the classroom when a boy rushed in. 我们已经在教室里值日，就在这时一名男孩冲了进来。

Li Ping was on his way home when two boys stopped him.李平正往家走，突然两个男孩拦住了他。

1.将when翻译成;当……时候,这个时候主句与从句时台一样.2.将when翻译成；……就在这时.有三个经常会用到句型3.Be doing sth.when……已经在做什么,就在这时

英语四级考试备考资料及辅导课程

英语四级考试培训班-名师辅导课程