-Did the train arrive on time-No,it should____(arrive) two hours ago 是填arrived么

分类: 作业答案 • 2022-01-02 15:26:26

问题描述：

-Did the train arrive on time
-No,it should____(arrive) two hours ago 是填arrived么

答

不是,应该填have arrived,因为此处表达的是本应该怎么样,should用于这种情况时是用should have down结构.