动词不定式的10大考点.doc

初中英语语法：动词不定式的10大考点例析动词不定式是初中英语的语法重点之一，也是每年中考英语试题的考点之一。它是动词的一种非谓语形式，没有人称和数的变化，不能单独作句子的谓语。其构成形式为to+动词原形，to为动词不定式的符号，本身无意义。动词不定式具有两大特点： 1.具有动词的特点，因此，后面可以跟表语、宾语或状语，构成动词不定式短语。2.具有名词、形容词或副词的特点，可以在句子中用作主语、宾语、宾语补足语、状语、定语、表语及同位语等。下面以近几年全国部分省市的中考英语试题作一简要的总结和分析，供同学们学习时参考。一、动词不定式作主语1. Its our duty _ the room every day.A. to clean B. cleaned C. clean D. cleans(甘肃省)2. Its hard for us _ English well.A. learn B. learns C. to learn D. learning(江西省)3.建造这座立交桥将花费工人们一年多的时间。It will _ the workers over a year _ _ the flyover.(北京市海淀区)4. Its very nice _ you to get me two tickets _ the World Cup.A. for， of B. of， for C. to， for D. of， to(安徽省)Keys： 1. A 2. C 3. take， to， build 4. B简析动词不定式作主语时，可以直接放在谓语动词前面的主语位置，也可以用先行词it作形式主语，而将真正的主语(不定式)置于后面。常见的句式有：(1)It is +形容词(of sb)to do sth.(2)It is +名词(for sb)to do sth.(3)It takes sb some time to do sth.(4)It is +形容词(for sb)to do sth.句式(1)中常用nice， kind， clever， good， right， wrong， foolish， careless等形容词，与介词of搭配，这些形容词常表述不定式逻辑主语的属性或性质；句式(4)中常用hard， difficult， easy， important等形容词，与介词for搭配，表示不定式表示的动作、行为的性质。二、动词不定式作宾语1. He wants _ some vegetables.A. buy B. buying C. to buy D. buys (山西省)2. Dont forget _ your homework with you when you come to school.A. to bring B. bringing C. to take D. taking (福建省)3. He found it very difficult _.A. sleeping B. sleepsC. slept D. to fall asleep (湖南省)Keys： 1. C 2. A 3. D简析在want， like， agree， hope， wish， learn， begin， start， seem， decide， hate， choose， forget， remember等动词后面，可以接不定式作宾语。如果其后接形容词补足语时，则可以用it作形式宾语，而把作真正宾语的不定式放到后面。三、动词不定式作宾语补足语1. Robert often asks us _ his Chinese, so his Chinese is much better than before.A. help him B. to help him with C. to help with D. helps him with (江苏省)2. Mr Li often teaches his Japanese friends _ Chinese food.A. cook B. cooks C. to cook D. cooked (甘肃省)Key： 1. B 2. C简析不定式可以用作宾语补足语。后面可以接不定式作宾语补足语的动词有：ask， teach， expect， tell， allow等。四、动词不定式作状语1. She went _ her teacher.A. to see B. looks C. saw D. seeing (江西省)2. Meimei likes English very much. She does her best _ English well.A. learn B. learning C. to learn D. learns (四川省)Key： 1. A 2. C简析go， come， try， do / try ones best等动词或短语动词作谓语时，其后常常可以接不定式作目的状语。3. Im sorry _ that.A. hears B. hearing C. hear D. to hear (河北省)4. Im sorry _ you.A. trouble B. to trouble C. troubling D. troubled (吉林省)5. My mother was very glad _ her old friend.A. to meet B. meet C. met D. meets (甘肃省)Keys： 3. D 4. B 5. A简析be +形容词+ to do sth结构中的不定式作状语，常表示原因或方式。6. The panda is so fat that it cant go through the hole.(改为意思相同的句子)The hole _ _ _ _ such a fat panda to go through. (广东省)7. The ice on the lake was so thin that people couldnt skate on it. (改为意思相同的句子)The ice on the lake wasnt _ enough _ people _ _ _. (广东省)Keys： 6. is， too， small， for 7. thick， for， to， skate， on简析在上述too +形容词/副词(for sb)to do(太而不能)和enough (for sb) to do(足以、足够做)结构中，不定式作结果状语。五、动词不定式作定语1. Would you like something _?A. drink B. drinking C. to drink D. drinks (湖北省)2. I have a lot of homework _.A. do B. doing C. did D. to do (河南省)3. He is not an easy man _.A. get on B. to get on C. get on with D. to get on with (山东省)Key： 1. C 2. D 3. D简析不定式作定语时，常放在被修饰的词语之后，与被修饰的词语为逻辑上的主谓关系或动宾关系；如果不定式的动词是不及物动词，其后要加上必要的介词或副词，构成的短语动词相当于及物动词。六、不带to的动词不定式1. We saw him _ the building and go upstairs.A. to enter B. enter C. entering D. entered (河南省)2. So much work usually makes them _ very tired.A. to feel B. feels C. feeling D. feel (吉林省)3. Your father is sleeping. Youd better _.A. not wake up him B. not to wake up himC. not wake him up D. not to wake him up (陕西省)4. I was made _ my homework in the afternoon.A. do B. doing C. to do D. did (贵州省)Key： 1. B 2. D 3. C 4. C简析1.在see， watch， hear， feel等感官动词和make， have， let等使役动词后面作宾语补足语的不定式不带to.但是在被动语态中，作主语补足语的不定式要带to(let没有被动语态)。2.在had better后面接不带to的不定式。七、动词不定式的否定形式1. Mr Black asked the man _ the queue.A. not to jump B. to not jumpC. didnt jump D. not jump (广西壮族自治区)2. The old man told the child _ noisy.A. not be B. not to be C. to not be D. be not (湖北省)3. There is going to _ an important meeting tomorrow. Please try _ late.A. have， not to be B. have， not beC. be， not to be D. be， not be (内蒙古自治区)Key： 1. A 2. B 3. C简析动词不定式的否定形式通常是在不定式符号to的前面加上not，如果是不带to的不定式就直接在动词原形前面加上not.八、某些动词后面接不定式和接动词-ing形式的区别1. Please stop _ a rest if you feel tired.A. to have B. having C. have D. has (广西壮族自治区)2. Why didnt you buy some bread on your way home?Sorry, I forgot _ some money with me.A. take B. taking C. to take D. took (湖北省)3. Lets have a rest, shall we?Not now, I cant stop _ the letters.A. write B. to write C. writing D. and write (湖北省)4. Jim was badly hurt, so he had to stop _ (walk). (用所给单词的正确形式填空)(四川省)Key： 1. A 2. C 3. C 4. walking简析一些常见的动词后面接不定式和接动词的-ing形式的区别如下：stop to do sth意为停止正在做的事情去做另外一件事，stop doing sth意为停止正在做的事：remember to do sth意为记住去做某事(事还未做)，remember doing sth意为记得做过某事(事已做)：go on to do sth意为接着做某事(做完一事，接着做另一事)，go on doing sth意为继续做某事(一事未做完接着往下做)：forget to do sth意为忘了做某事(事还未做)，forget doing sth意为忘了曾做过某事(事已做)。5. When I was walking in the street I saw a plane _ over my head.A. flies B. flying C. flew D. to fly (福建省)6. A woman saw it _ when she was walking past.A. happen B. happens C. happening D. to happen (黑龙江省)Key： 5. B 6. A简析在see， hear， watch， feel等感官动词后面可接不带to的不定式，也可接动词的-ing形式作宾语补足语，用不定式表示动作的全过程(动作已结束)，用动词的-ing形式表示动作正在进行(动作尚未结束)。九、动词不定式的省略及其符号to的保留1. Would you like to go to the cinema with us?Yes, _. What time are we going to meet?A. I would B. I would like C. I like to D. Id like to (浙江省)2. Would you like to go for a picnic with us?_. What time are we going to meet?A. No, I cant B. Yes, Im gladC. Yes, Id love to D. Id like (大连市)Keys： 1. D 2. C简析在口语中，动词不定式中的动词或短语动词在上下文中重复出现时，第二个动词不定式可以省略，但是to不可省略。这种用法常见于be glad to，would like (love) to，have to等结构中。十、动词不定式的被动式和其他形式The new hospital _ is near the factory.A. build B. builds C. to build D. to be built (青海省)Key： D简析当不定式的逻辑主语是不定式所表示的动作的承受者(宾语)时，用动词不定式的被动式，即：to be +过去分词；如果不定式所表示的动作发生在谓语动词表示的动作之前，不定式用完成式，即：to have +过去分词；如果不定式表示的动作和谓语动词表示的动作同时发生，用不定式的进行式，即：to be +现在分词不定式是非谓语动词的重要情形之一。由于它具有名词、动词、形容词和副词的多种特征，所以在句中可以作主语、宾语、表语、状语、宾语补足语、主语补足语、同位语或独立成分。不定式作定语时兼有主动式和被动式两种形式，用主动式还是被动式？这往往是不少同学感到棘手的问题。现归纳如下，供同学们学习时参考。 一、不定式作定语只能用主动式的情形 1不定式所修饰的名词和不定式中的动词所表示的动作是逻辑上的主谓关系（此时，该不定式短语可转化为一个定语从句）。例如： Li Xuemei was the first athlete to get to the finishing line（athlete who got to the finishing line）李雪梅是第一个到达终点的选手。 We need someone to help to repair the computer（someone who will help to repair the computer）我们需要一个能帮助我们修电脑的人。 He is always the first to bear hardships（the first who will bear hardships），the last to enjoy comforts（the last who will enjoy comforts） 他总是一个吃苦在前，享乐在后的人。 2不定式与它修饰的名词是逻辑上的动宾关系，且主语是不定式中的动词所表示动作的逻辑主语或在句中能找到其逻辑主语。例如： He has a lot of work to do today今天他有大量的活要干。 Do you have anything more to say？你还有什么话要说吗？ Our teacher arranged us six exercises to do at home老师给我们安排了六道练习题在家里做。（us是to do的逻辑主语） Father always bought his son some toys to play with after his business父亲每次出差回来都给他的儿子买玩具玩儿。（son是to play with的逻辑主语） 3有些句子中，尽管行文上没有不定式的逻辑主语，但是从句意角度可以体会出不定式中隐含着“for sbto do”结构。此时，不定式应该用主动式。例如： There is nothing（for us） to worry about没有什么可值得担忧的。 That will be the only thing（for us）to do now这恐怕是目前（我们）唯一可行的办法。 It is a good opportunity（for us them）to learn from the farmers这可是一个向农民学习的大好机会。 4部分形容词，如eager，anxious，determined，able等，其后常跟不定式，他们的同源名词后要用不定式的主动式作定语。例如： （MrSmith was eager to get back to teach at the school） MrSmiths eagerness to get back to teach at the school was quite obvious史密斯先生急于回校教学这一点是显而易见的。 （He was anxious to know the results of the test） We could see his anxiety to know the results of the test我们看得出他很想知道这次测验的结果。 （They were determined to catch up withus） In their speech they expressed their determination to catch up with us他们在讲话中表达了他们要赶上我们的决心。 5部分动词，如attempt，promise，plan， intend，refuse等，其后常跟不定式作其宾语，它们的同源名词后要用不定式的主动式作定语。例如： （They attempted to reach there before five oclock） They failed in their attempt to reach there before five oclock他们试图在五点以前赶到那里，但是没有办到。 （You promised to give me a present on my birthday） You havent kept your promise to give me a present on my birthday你没有遵守在我过生日时给我礼物的诺言。 （They are planning to be in business on National Day） I guess they will make some changes in their plan to be in business on National Day我猜他们在国庆节开始营业的计划得做些变动了。 6在“with without 宾语宾语补足语”结构中，若宾语补足语是不定式（作定语），不定式所表示的动作将要发生，且句子的主语是该动作逻辑上的执行者，此时不定式须用主动式。例如： With a lot of difficult problems _ ， the newly-elected president is having a hard time（2002上海高考） Asettled Bsettling Cto settle Dbeing settled With several meetings to attend，he couldnt go to the Great Wall with us由于有几次会议要参加，所以他不能和我们一起去长城了。 Without two members to come，wed better not start the meeting还有两位成员未到，我们最好先别开始