2014年在职联考英语高分备考之动词不定式(4)

　　五、用作补语

　　动词不定式作补语时，在主动语态句里补宾语，在被动语态句里补主语，句子的宾语或主语是不定式动作的逻辑执行者。如果不定式是to be done，句子的宾语或主语就是逻辑承受者。

　　1.在主、被动语态句里用带to的动词不定式作补语的动词主要有：要求允许提议(ask, allow, permit, advise)，期望邀请鼓励(expect, suppose, invite, encourage)，教导告诉想要(teach, tell, want)，等待希望愿意(wait for, wish, would like / love)。如：

　　1) I’d invite her to have dinner at my house.

　　2) Teenagers should be allowed to choose their own clothes.

　　3) Email English is supposed to be used on mobile phones.

　　2.动词不定式作补语，在主动语态句里不带to，被动语态句里带to时多数动词是感官动词和使役动词，包括四“看”：look at, observe, see, watch，三“让”：have, let, make，二“听”：hear, listen to，一“感觉”：feel，一“注意”：notice。如：

　　1) This picture makes me feel tense!

　　2) Of course we want to see Liu Yu achieve his dreams.

　　3.help后接动词不定式作补语，to可带可不带。一般说来，带to表间接帮助，不带to表直接帮助。在被动语态句里，或者用不定式的否定式作补语时要带to。如：

　　1)... they can help you to compare two different products so that you can buy the one you really need.

　　2) Using email English helps you write quickly.

　　4.be said, be sure, happen, seem等后面可以接带to的动词不定式作主语的补语。如：

　　1) He doesn’t seem to have many friends

　　2) Be sure not to miss them if they come to a city near you.