题目内容：

Mr Green asked Li whether she had passed the exam ______.
A.yesterday B.the day before C.the day ago D.before the day
究竟the day before 和yesterday有什么不同?
the day before在这是定语吗?那yesterday不能做从句中的状语吗?

优质解答

根本不要思考那么复杂.在间接语气中有些词是必须经过转化的.比如Mr Green asked Li:"Did you pass the exam yesterday?"如果要变成间接语气,就要把yesterday改成the day before.类似的还有把today改成that/this day...