动词不定式的语法功能一、作宾语1)动词+不定式 em。tend。wait。wish。undertake。举例:Thedriverfailedtoseetheothercarintime。司机没能及时看见另一辆车。Ihappentoknowtheanswertoyourquestion。
我碰巧知道你那道问题的答案。2)动词+不定式;动词+宾语+不定式ask,beg,choose, expect , hate, help intend like, love, need prefer, prepare, promise, want, wish… I like to keep everything tidy。
我喜欢每件东西都保持整洁。 I like you to keep everything tidy。 我喜欢你使每件东西都保持整洁。 I want to speak to Tom。 我想和汤姆谈话。 I want you to speak to Tom。
我想让你和汤姆谈话。 3） 动词+疑问词+ to decide, know, consider forget, learn, remember, show, understand, see, wonder, hear, find out, explain, tell Please show us how to do that。
请演示给我们如何去做。 There are so many kinds of tape-recorders on sale that I can't make up my mind which to buy。有这么多的录音机，我都拿不定主意买哪一种。
注意:疑问词带不定式在句中作成分时，谓语动词用单数。 The question is how to put it into practice。 问题是怎样把它付诸实施。 4)以下动词后，只能跟不定式作宾语。 如：agree,ask,aim,arrange,choose,decide,demand,expect,fail ,help,hope,lean,long,manage,offer,plan,prepare, pretend,promise,refuse,wish 等，这些词大部分可接th at引导的从句。
如： I decided to ask for my money back。 I decided that I would ask for my money back。 When our visit to the farm was over,we expected to startback on foot。
When our visit to the farm was over, we expected that wewould start back on foot。 5)当复合宾语中的宾语是不定式时，先用形式宾语it代替不定式，把不定式置于补语之后，即：主语＋动 词＋it＋补语＋to do句式。
如： We think it quite important for us to learn a foreignlanguage well。 He feels it his duty to help the poor。 二、作补语 1) 动词+宾语+不定式(to do) advise allow appoint believe cause challenge command compel consider declare drive enable encourage find forbid force guess hire imagine impel induce inform instruct invite judge know like order permit persuade remind report request require select send state suppose tell think train trust understand urge warn 例句： a。
Father will not allow us to play on the street。 父亲不让我们在街上玩耍。 b。 We believe him to be guilty。 我们相信他是有罪的。 Find 的特殊用法： Find 后可用分词做宾补，或先加形式宾语，再加形容词，最后加带to 的动词不定式。
find后也可带一个从句。此类动词还有get，have。 I found him lying on the ground。 I found it important to learn。 I found that to learn English is important。
2) to + be 的不定式结构，作补语的动词。 Acknowledge, believe, consider, think, declare(声称), discover, fancy(设想), feel find, guess, judge, imagine, know, prove, see(理解), show, suppose, take(以为), understand We consider Tom to be one of the best students in our class。
我们认为汤姆是班上最好的学生之一。 3) to be +形容词 Seem, appear, be said, be supposed, be believed, be thought, be known, be reported, hope, wish, desire, want, plan, expect, mean… The book is believed to be uninteresting。
人们认为这本书没什么意思。 4) there be+不定式 believe, expect, intend, like, love, mean, prefer, want, wish, undrstand We didn't expect there to be so many people there。
我们没料到会有那么多人在哪里。 有些动词需用as 短语做补语，如regard, think believe, take, consider。 We regard Tom as our best teacher。 我们认为汤姆是我们最好的老师。
Mary took him as her father 。 玛丽把他当作自己的父亲。 三、作主语 动词不定式作主语时，句子的谓语动词常用单数，其位置有以下两种： (1)把不定式置于句首。如： To get there by bike will take us half an hour。
(2)用it作形式主语，把真正的主语不定式置于句后，常用于下列句式中。如： ①It＋be＋名词＋to do It's our duty to take good care of the old。 ②It takes sb+some time+to do How long did it take you to finish the work? ③It＋be＋形容词＋for sb＋to do It is difficult for us to finish writing the compositionin a quarter of an hour。
④It＋be＋形容词＋of sb＋to do It is stupid of you to write down everything the teachersays。 ⑤It seems(appears)＋形容词＋to do It seemed impossible to save money。
在句型③中，常用表示客观情况的形容词，如：difficult,easy,hard,important,impossible,necessary 等；在句型④中，常用careless,clever,good,foolish,honest,kind,lazy,nice。
1.IS 去掉， HE SAID HE HAS GONE TO HONG KONG. 不是不定式。2.主语是The children，seemed 是一个分词，既是代替WHO IS SEEMED作定语，所以不能再接不定式。我认为应该是 The children seemed that is talking about some amusing things.如果用The children who is seemed 就可以接不定式 to be talking about some amusing things.
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