It took me a long time before I was able to fully appreciate what they had done for me.为什么句首的took不用过去完成时,不是过去的过去么、

分类: 作业答案 • 2022-01-02 14:25:29

问题描述：

It took me a long time before I was able to fully appreciate what they had done for me.
为什么句首的took不用过去完成时,不是过去的过去么、

答