to have done , having done 选哪个?为什么?_______ the home work,We went _英语解答

to have done , having done 选哪个?为什么?
_______ the home work,We went home.
A.Having finished B.To have finished

选哪个? 为什么?

老师说 to have done , having done 表示发生在谓语动词之前

这2个都是之前 , 有什么区别呢?

人气：301 ℃　时间：2019-12-08 01:38:40

解答

1、we have finished the homework.2、we went home.两句合在一起,第一句的have变成having,表示已经完成的状态.选A啦扩展：we went home to finish the homework.就可以表示成 to finish the homework,we went home....不对呀？老师说发生在谓语动词之前的都能用to have done 是将来完成时啊！