no sooner…than的意思相当于“刚做完A这件事，就做B这件事”。其基本用法为：主语+had no sooner done…than+主语+did。使用时要注意：1、该句型所描述的动作一般都发生在过去。2、主句谓语动词采用过去完成时，when从句的谓语动词采用一般过去时。
no sooner than的用法
译为“刚一…就” =as soon as
分为一般式和倒装式
一般形式
had no sooner done…than did把no sooner整体看作一个副词，副词修饰动词时一般放在助动词后面，主动词前边。
We had no sooner gone to bed than the phone rang. 我们刚一上床，电话就响了。
倒装形式，进行强调（than前加不加逗号都行），一般用在比较formal的情境
No sooner had he arrived than he started talking about leaving. 他刚到，就说起要走的事
注意1：有的地方不用完成时态，而用过去时态，为了强调两件事间隔非常短，比如：
No sooner did Barack Obama ascend to the Presidency, then the country split asunder. 巴拉克奥巴马刚当上总统，这个国家就分裂了。
注意2：有的地方用现在时态（有人说现在时态不对，但是真的有这样的例句）
No sooner have you opened the packaging than you're already yearning for the upgrade. 刚打开包装，你就开始渴望升级了。--BBC
no sooner than例句
1、No sooner had he arrived in Rome than he was kidnapped.
他一抵达罗马就被绑架了。
2、No sooner did Peter remember it than he heard the ticking.
彼得刚想起来，就听到了滴答声。
3、No sooner had he seen Heidi, than he smiled, opening his round eyes as wide as possible.
他刚看到小海蒂，就笑了，圆圆的眼睛睁得更大了。
4、No sooner had he reached the grapevine than--crack!
他刚走到葡萄藤边，啪！
5、No sooner had it touched his tongue than he heard a strange whispering of little voices outside his window.
它刚一碰到他的舌头，他就听到他的窗外有奇怪的低声细语。
