before I went to bed,my father ____[leave] for Sydney.可以用过去完成时态吗

分类: 作业答案 • 2022-01-02 13:51:22

问题描述：

before I went to bed,my father ____[leave] for Sydney.
可以用过去完成时态吗

答

had left.
因为是发生在过去动作went to bed之前的动作,是过去的过去,确实应该用过去完成时