I skated for four hours与I have been skating for four hours的区别最好详细点,说的明白点

分类: 作业答案 • 2021-12-28 16:20:05

问题描述：

答

I skated for four hours 过去时,过去的某个时间我滑冰滑了四个小时.
I have been skating for four hours 强调已经,我已经滑了四个小时冰.skating,现在还在继续.