后面能接to不定式作宾语补足语的动词有:ask, order, teach, tell, want, wish, help等。
The teacher told us to do Exercise 老师要我们做练习一。
I want both of you to go. 我要你们俩去。We helped her (to) repair her bike. 我们帮助她修理自行车。
Let’s have a rest. 我们休息一会吧。 I saw him come in. 我看见他进来了。
感官动词后既可跟不带to的不定式作宾补,也可跟v-ing作宾补
前者表示动作的全部过程已结束;后者表示动作正在进行