I must apologize for interrupting you.可以改为“I must apologize for having interrupted you.这里的"having interrupted"是什么时态,这个用法是怎么回事呢?

分类: 作业答案 • 2021-12-19 16:25:52

问题描述：

I must apologize for interrupting you.可以改为“I must apologize for having interrupted you.
这里的"having interrupted"是什么时态,这个用法是怎么回事呢?

答