常与不定式做宾语连用的动词有：want, hope, wish, offer, fail, plan, learn, pretend, refuse, manage, help, agree, promise, prefer, 如果不定式（宾语）后面有宾语补足语，则用it作形式宾语，真正的宾语（不定式）后置，放在宾语补足语后面，例如：
Marx found it important to study the situation in Russia.
动词不定式也可充当介词宾语，如：
I have no choice but to stay here.
He did nothing last Sunday but repair his bike.
动词不定式前有时可与疑问词连用，如：
He gave us some advice on how to learn English.
要记住如下动词及短语只跟动名词作宾语：
enjoy, finish, suggest, avoid（避免）, excuse ,delay, imagine, keep, miss, consider, admit（承认），deny（否认）, mind, permit, forbid, practise, risk（冒险）, appreciate（感激）, be busy, be worth, feel like, can't stand, can't help（情不自禁地）, think of, dream of, be fond of, prevent…(from),keep …from, stop…（from）,protect…from, set about, be engaged in, spend…(in), succeed in, be used to, look forward to, object to, pay attention to, insist on, feel like
在forget, remember, stop, regret, try, mean等动词后跟不定式与动名词意义不同，
不定式表示谓语动词之后的动作，而动名词表示的动作发生在谓语动词之前，常用一般式doing代替完成式having done.
He forgot to tell me to post the letter.（他忘了叫我发信。）
I shall never forget finding that rare stamp on an ordinary envelope. 我永远也忘不了在一个普通信封上发现了那枚珍贵的邮票。
Remember to write to us when you get there. 到那里，记得给我们写信。
I don’t remember meeting him. 我不记得见过他。
I regret to tell you that I can’t go to your birth-day party. 我很遗憾告诉你我不能去参加你的生日晚会了。
They regretted agreeing to the plan. 他们后悔同意这个计划。
He tried to pretend to share in the pleasure with his friend. 他尽力假装与朋友分享欢乐。
She tried reading a novel, but that couldn’t make her forget her sorrow. 她试着看看小说，但也不能使她忘记伤心事。
I didn’t mean to hurt you. 我没有企图伤害你。
A friend indeed means helping others for nothing in return. 真正的朋友意指不
图回报地帮助别人。
