do的过去式是什么？

问题描述

精选答案

do的人称和时态变化为：第三人称单数：does；现在分词：doing；过去式：did；过去分词：done。

相关介绍：

例句：

What in the world did they think they were doing?

他们到底认为自己在做什么？

I could do it now, if you like.

如果你愿意的话，我现在就可以做这事。

What is he doing calling at this time of night?

他干吗这么晚了还打电话？