Ask sb to do(sth.),不是do,也不是doing.
ask sb to do(sth.)這個動詞結構是:動詞+賓語+動詞
一:及物動詞(謂語動詞)+賓語+動詞(非謂語動詞to do)
這種結構常用的動詞有:
tell, ask, order, teach, allow, want, like, ……
二:及物動詞(謂語動詞)+賓語+動詞(非謂語動詞do)
這種結構的動詞常用的有使役動詞:
let, make, have…
三:及物動詞(謂語動詞)+賓語+動詞(非謂語動詞do, doing)
這種結構常用的動詞有感官動詞: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.
ask sb. to do sth. 表示請求或邀請某人做某事,相當於 request sb. to do sth. 或invite sb. to do sth.