henry killed the dog,i asked him --- A .HE DID THAT B.HE HAS DONE SO

问题描述:

henry killed the dog,i asked him --- A .HE DID THAT B.HE HAS DONE SO

A 答案
过去时, 因为kill 杀是一个动作, 已经杀了, 是过去杀的
现在完成时表示持续的一个状态或动作.
比如说, he has been working since 9'clock, 他从九点开始就一直工作到现在, 现在还在工作.