She must have left the town for home at Albany,for she did not show up at the party last night.

分类: 作业答案 • 2021-12-29 10:07:52

问题描述：

She must have left the town for home at Albany,for she did not show up at the party last night.
为什么不用 had left?

答

must have done .固定搭配,表示肯定推测!