no sooner引导什么从句

no sooner + 主句 than + 从句。意思是“一...就...”。引导时间状语从句，主句用过去完成时，“than”后面的从句用一般过去时。例句

No sooner had we left home than it began to rain. 我们刚离开家就开始下雨了。

No sooner had she said it than she burst into tears.

她刚一说完，泪水便夺眶而出。

No sooner had he arrived in Rome than he was kidnapped.

他一抵达罗马就被绑架了。

No sooner had we sat down at the table than the phone rang.

我们刚在桌子旁坐下，电话铃就响了。

No sooner had I sat down than there was a loud knock on the door.

我刚坐下就有人大声敲门。