Ask sb to do(sth.),不是do，也不是doing.

ask sb to do(sth.)这个动词结构是：动词+宾语+动词

一：及物动词(谓语动词)+宾语+动词(非谓语动词to do)

这种结构常用的动词有：

tell, ask, order, teach, allow, want, like, ……

二：及物动词(谓语动词)+宾语+动词(非谓语动词do)

这种结构的动词常用的有使役动词：

let, make, have…

三：及物动词(谓语动词)+宾语+动词(非谓语动词do， doing)

这种结构常用的动词有感官动词：feel, listen to, hear, look at, see, watch, notice, observe, find

……

例句：

1.The teachers often tell us to study hard.

2.The boss often makes the workers work twelve hours a day.

3.I saw Mary come into the room

4. I saw Mary coming into the room.

Asksbtodo还是do还是doing 扩展资料

ask sb. to do sth. 表示请求或邀请某人做某事，相当于 request sb. to do sth. 或invite sb. to do sth.