what does he talk about和what was he talk about的区别
问题描述:
what does he talk about和what was he talk about的区别
有什么区别吗 为什么这里有用was的而很少有用does的我总是搞不清楚什么情况用be动词提问什么情况用助动词
答
前面的是一般现在时,而后面的则是一般过去时.用be动词提问,一般后面的动词都是ing形式e.g.What were you saying just now?你刚刚在说什么啊?用助动词提问,一般后面动词是原形的e.g.What does he do now?他现在是做什...