He offered to help us.
She can't afford to buy a computer.
When did you begin to work there?
They decided to drop the plan.
We'll continue to support you.
She is learning to swim.
We love to listen to fairy tales.
He promised to return in an hour.
能跟不定式作宾语的动词常见的有：want, like, wish, hate, prefer, hope, continue, manage, try, ask, offer, start, forget, promise, mean, pretend, intend, begin, attempt, decide, learn, desire, agree, care, choose, determine, undertake, expect等。
2.有些动词(如tell, advise, show, teach, find out, discuss, learn, forget等)后面可跟一个带有连接副(代)词的不定式作宾语：
They will teach us how to type.
She didn't know how to answer.
He'll advise you what to do.
You must decide whether to go with them.
She found it impossible to finish the work so soon.
I don't think it necessary to do that.
He felt it his duty to point that act.
We regard it as an honor to be invited.
I have long had it in mind to answer your letters.
She took it on herself to apologize for me.