be almost done doing是什么时态和句型?

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/16 14:15:31

be almost done doing是什么时态和句型?
they were almost done building the new office tower but they hit a snag.

现在对过去的一个进行时的描述,但现在他们在处理一个障碍（物）

be almost done doing是什么时态和句型? be doing是什么时态 be done 和be doing done will be done 是什么时态? being done 和 be doing ;done ；doing ; be done ;to be done 的用法 would be doing 是什么时态 Will be doing是什么时态 pretend to be done是什么时态? need doing to/be done 用在什么句型上 need doing 和need to be done Everything can be done has been done.请问这里can be done 用的是什么时态 would be doing是什么时态的啊?