Could I borrow that book when you've finished reading it?that是代词吗?“you've finished reading it 当你读完后”,怎样理解是现在完成进行时?it 又是指什么?

分类: 作业答案 • 2021-12-19 16:14:00

问题描述：

Could I borrow that book when you've finished reading it?
that是代词吗?“you've finished reading it 当你读完后”,怎样理解是现在完成进行时?it 又是指什么?

答