Think what you have done in the past.为什么不是what have you done呢?

问题描述:

Think what you have done in the past.为什么不是what have you done呢?

think 后面带一个宾语从句.

what have you done是疑问句形式
从句应用陈述句句式.

think what you have done in the past 是只某件特定的事
what have you done 就比较广

这边的WHAT是引导了一个主语从句