八年级英语 动词不定式的用法.doc

八年级英语语法专题（II）动词不定式的用法 初中英语单位测试,中考英语语法辞汇,中考英语应试技巧,中考英语模拟题,更多精美内容尽在“尹氏欢愉英语”中，欢迎大家登岸学习。 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情势，没有人称和数的变化，不能单独作句子的谓语。其构成情势为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，是以，后面可以跟表语、宾语或状语，构成动词不定式短语。2.具出名词、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。根据新课标八年级要求介绍近几年全国部分省市的中考英语试题为例，对不定式的难点以及它在中考英语中的考查点，作一简要的总结八年级英语下册总结和分析，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.(BeiJing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作情势主语，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. It is +名词(for sb)to do sth .It takes sb some time to do sth .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，与前置词of搭配，这些形容词常表述不定式逻辑主语的属性或性质；句式中常用hard，difficult，easy，important等形容词，与前置词for搭配，暗示不定式暗示的动作、举动的性质。 注意：当不定式作主语的句子中又有一个不定式作表语时，不能用It isto的句型 (对)To see is to believe. 百闻不比一见。(错)It is to believe to see. Its for sb.和Its of sb. 1) for sb.常用于暗示物质的特征特点，暗示客观情势的形容词，如easy, hard, difficult, interesting, impossible等： Its very hard for him to study two languages.对他来讲学两门外语是很难的。 2) of sb的句型一般用暗示人物的性格，道德，暗示主观感情或态度的形容词，如good, kind, nice, clever, foolish, right。 Its very nice of you to help me.你来帮助我，你真是八年级下册英语语法太好了。 for与of的辨别要领：用前置词后面的代词作主语，用前置词前边的形容词作表语，造个句子。如果道理上通顺用of，欠亨则用for。如：You are nice. (通顺，所以应用of)。He is hard. (人是困难的，欠亨，是以应用for。) A.It is right to stop killing wild animals. B.It is the best time to visit USA in summer. C.It is helpful for us to learn English well. 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作情势宾语，而把作真正宾语的不定式放到后面 Sb + V + it（情势宾语）+ agj（形容词）+to+ V（宾语）注意无BE动词。 3、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 (川蜀) 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布局中的不定式作状语，常暗示原因或体式格局。 6. The panda is so large that it cant go through the hole.(改为意思不异的句子) The hole _ _ _ _ such a large panda to go through. (广东省) 7. The ice on the lake was so thin that people couldnt skate on it. (改为意思不异的句子) The ice on the lake wasnt _ enough _ people _ _ _. (广八年级下册生物总结东省) 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)布局中，不定式作结果状语。 sosuch. that.如此.乃至.的用法及与其他句型的互换. A.SbSth +be V+ so + adjadv (aan+adj +n)+that + cantcouldnt. = SbSth +be V+ too+adjadv(for+SbSth)+to+V . .如此.乃至.=太而.不能. B、.so that to =in order to+V动词that+从句 .为了以便于. C、.SbSth +be+ so + adj形容词a an +n V +adv副词(so +littlemanymuch. such +aan+adj +n名形容词+名词)+that + canould =.SbSth +be V+adjadv +enough足够的+ to+V.如此.乃至于.=.足够.干. 如：他太年轻了而不能去上课。 A. He is too young to go to school. B. He is so young that he cant go to school C He is nt old enough to go to school. D. He is so a young boy that he cant go to school （ ）一、The water is _ dirty _ the animals cant drink it. A. too . to B.so. that C. such ,that D. nt ,enough to 谜底是A （ ）二、The computer cost _much money _ I cant afford to buy it.(谜底选项同1)谜底：B。因money前有 much所以不能用 such 3环境的污染如此严重，一些濒危动物无法保存下去。 Environment _ _ _ for endrangered animals to live on. 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，常放在被润色的词和词组然后，与被润色的词和词组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 的前置词或副词，构成的短语动词相当于及物动词。 6、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 him C. 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，作主语补八年级英语语法足语的不定式要带to(let没有被动语态)。2.在。had better+V/not +V最好干。后面接不带to的不定式。 七、动词不定式的否认情势 1. Mr Black asked the man _ the queue. A. not to jump B. to not jump C. 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 be C. 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认情势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情势的区别 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). (用所给单词的不错情势填空)(川蜀) 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情势的区别如下：stop to do sth意为停止正在做的事情去做另一件事，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等感官动词后面可八年级下册政治总结接不带to的不定式，也可接动词的-ing情势作宾语补足语，用不定式暗示动作的全历程(动作已竣事)，用动词的-ing情势暗示动作正在进行(动作尚未竣事)。 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 glad C. 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不成省略。这类用法常见于be glad to，would like (love) to，have to等布局中。 10、另外注意1）、带双宾语的及物动词，如：give Sth. to Sb ,.send. to .bring. to take. to teach. to want. to. lend. to ,show .to .etc to可以作前置词用+人/物/地点,大部分带双宾语的动词是接 to +Sb（间接宾语），而cook /buy read Sth for + Sb (见Module 10 课本)Sb 注意：V +Sth +prep +Sb =V +Sb +Sth(指人的间接宾语在直接宾语前，要省略前置词to ) E. g :Please you lend your pen to me . = Please you lend me your pen. 请你借笔给我 E.G ( )1.Cou