we went to Italy for a holiday last year. That must have been nice. 问题：为什么用must have been

分类: 作业答案 • 2021-12-28 16:06:37

问题描述：

we went to Italy for a holiday last year. That must have been nice. 问题：为什么用must have been
为什么不用must be?

答

must have + 过去分词是对过去事情的推测,因为去意大利渡假是发生在去年的事情,所以是对过去的推测,那一定很好.
希望能帮到你,祝更上一层楼O(∩_∩)O
有不会的欢迎再继续问我(*^__^*)