Doing morning exercises is good for you .句首为什么用doing?谢谢
问题描述:
Doing morning exercises is good for you .句首为什么用doing?谢谢
答
动词原形不能当主语,所以用它的-ing形式作主语.或者用动词 不定式作主语.
Doing morning exercises is good for you .句首为什么用doing?谢谢
动词原形不能当主语,所以用它的-ing形式作主语.或者用动词 不定式作主语.