what about______football now

问题描述:

what about______football now
可以写is playing

不可以!
为什么呢?
答:about是prep.(介词),后面是不能加be动词的,它的固定用法是后面加doing sth.表示做某事,后边是不能加be动词的,如what about playing football now
be doing sth.表示现在进行时,如We are playing football now.