hardly..when...的用法及所用时态

hardly(scarcely) …when… 这个句型，前面部分用过去完成时，后面部分用一般过去时。
例如：
Saddam had hardly realized what was happening when he was captured. = Hardly had Saddam realized what was happening when he was captured. 萨达姆还没有意识到在发生什么事情就被抓获了。

hardly..when... 一...就...
hardly前置要倒装，时态hardly这里一般用had done（过完）,when这里一般用did（过去）

Hardly had I opened the door when he told me.
我刚开开门，他就告诉了我。

倒装..该什么时态还什么时态..