The fans cried as soon as they saw the movie star.

问题描述:

The fans cried as soon as they saw the movie star.
The fans cried as soon as they saw the movie star.=The fans had no sooner seen the movie star than they cried.
为什么转变后的句子要用过去完成时?

用no sooner than以后,出现了时间上的先后关系(用的是否定形式 no),时间更早的一个因此要使用过去完成时"用的是否定形式 no"这句话什么意思?no sooner than不比什么更早,其实就是同时,用否定方式替代了原来的肯定表述方式,但意义不变,这是在语法上就形成了先后关系