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初中英语语法讲义非谓语(学生版).docx

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    • 初中英语非谓语动词非谓语动词包括动词不定式、动词-ing形式和过去分词非谓语动词没有人称和数的变化,不受主语人称和谓语动词的时态变化干扰,但是有时态和语态的变化非谓语动词在句中不能单独作谓语,但仍保留动词的特点,即可以有自己的宾语和状语典型例句:1.To hear your voice is so nice.(听到你的声音真高兴动词不定式)典型例句:2.Reading books makes one wise.(读书使人明智动词-ing形式)典型例句:3.This is a book written by Balzac.(这是巴尔扎克写的一本书过去分词)1.动词不定式动词不定式是一种动词的非谓语形式,可在句中充当多种成分,是初中英语学习中必须掌握的重要语法项目1.动词不定式的类型动词不定式有两种表现形式,一种是“to+动词原形”,另一种是“疑问词+to+动词原形”,详见后面的举例2.动词不定式的句法功能A.动词不定式作主语To learn a foreign language is not easy.(学习外语不是一件容易的事B.动词不定式作表语Her job is to look after the children.(她的工作就是照顾孩子。

      C.动词不定式作宾语He wants to buy some stamps.(他想买一些邮票D.动词不定式作宾语补足语The doctor told me to have a rest.(医生叫我休息一下E.动词不定式作定语I want something to eat.(我想要一些吃的F.动词不定式作状语Yesterday they came to visit us.(昨天他们来拜访我们3.动词不定式的时态和语态A.一般式:to do表示不定式的动作发生在谓语的动作之后,或同时发生I want to visit my teacher.(我想去拜访我的老师表示之后)I believe him to be a good student.(我相信他是个好学生表示同时)B.完成式:to have done表示不定式的动作发生在谓语的动作之前I am sorry to have kept you waiting for a long time.(非常抱歉让你等了那么长时间C.进行式:to be doing表示不定式的动作与谓语的动作同时进行He seems to be worrying about it.(他似乎正在担心它。

      D.被动语态:to be done表示被动关系The sick man will need to be taken to a hospital.(这个病人需要被送到医院4.动词不定式的重点与难点(1)疑问词+to+动词原形A.该句型常可与宾语从句互换I don’t know what to do.=I don’t know what I should do.(我不知道应该做什么B.疑问词在不定式中充当成分时,疑问代词作宾语,疑问副词作状语I don’t know what to do.(我不知道做什么疑问代词what作宾语)I don’t know how to do it.(我不知道怎么做疑问副词how作状语)(2)动词不定式作定语A.动词不定式要放在所修饰的名词、代词之后He has an important meeting to attend.(定语)(他有一个重要的会议要参加B.动词不定式与所修饰的名词、代词构成逻辑上的动宾关系,因此若不定式的动词是不及物动词或者不定式所修饰的名词或代词是不定式动作的地点、工具等,不定式后面就要加上相应的介词They want a big room to live in.(他们想要一个大房间住。

      Pass me a knife to cut the bread with.(递给我一把刀切面包3)动词不定式作状语当动词不定式修饰表语形容词作状语时,它和主语构成动宾关系同样,如果不定式中动词是不及物动词时要加相应的介词The house is very comfortable to live in.(这房子住起来非常舒服The pen is good to write with.(这支钢笔写起来很好用5.使用动词不定式的注意事项A.有些动词后的不定式省略to1)祈使动词如make,let,haveThe boss made Tom’s father work all day.(老板让汤姆的爸爸整天工作2)感官动词如hear,see,noticeI saw him go into the classroom just now.(我看到他刚才进了教室3)用于被动语态时,被省略的to需要还原He was made to do the job at once.(他被迫立刻做这个工作补充:不定式省略to的口诀有些动词跟不定式作宾语补足语时省去了to,其口诀是:一感二听三让四观看一感:feel;二听:hear,listen to;三让:let,have,make;四观看:observe,see,watch,look atB.动词不定式的否定需在to前加not。

      Mother often tells Tom not to play football in the street.(妈妈经常叫汤姆不要在街上踢足球C.作简略回答或为避免不必要的重复时,不定式常可省略to后面的动词,只保留to动词make,let,see,hear...后面的词可全部省略A:Did you go to see the Great Wall?(你去长城了吗?)B:Yes,I went to.(是的,我去了省略了see the Great Wall)A:Did Mary go there with you?(玛丽是和你一起去的那里吗?)B:No,her mother didn’t let her.(不,她妈妈没有让她去D.接不定式作宾语的动词有want,wish,hope,decide等E.接带to的不定式作宾补的动词有ask,tell,get,wish,want,like,teach等F.接不带to的不定式作宾补的动词有let,make,have,see,watch,feel,listen to等G.接不定式作状语的形容词有happy,sorry,afraid,able,sure等。

      重要:只接不定式作宾语的一些常用特殊谓语动词:want想要;hope希望;wish想做(某事);agree同意;decide决定;manage设法做成;refuse拒绝;pretend假装H.带to的不定式作主语时,常用形式主语it代替,其作表语的形容词有important,easy,difficult,hard,good,bad,right等It is too hard for him to work out such a difficult problem.(对他来说做出这么难的题目太困难了I.既可接不定式,又可接动词-ing形式的动词有like,love,hate,start,begin,need和stop,remember,forget,go on,try等,前者意义没有多大的区别,后者区别较大J.带to的不定式和疑问词连用,相当于一个名词作宾语或宾补,这种句式可把不定式转换为复合句,这类动词有know,decide,tell,ask,find,hear,learn,think等K.带to的不定式作定语的动词有have,there beI have a few letters to write.(我有一些信要写。

      L.不定式to在一些情态动词或助动词及一些表“意愿”的动词之后代替上文提到的动词这类动词有have,be able,be going,hope,like,love,try等A:Would you like to go with me?(你愿意跟我一起去吗?)B:Yes,I’d like to.(是的,我愿意6.动词不定式的几个重要句型A.疑问词+动词不定式My teacher didn’t tell me what to do next.(我的老师没有告诉我下一步要做什么B.too...to.../enough to...They are too shy to speak English.(他们太害羞了以至于不能说英语It’s too dark for him to see anything in the room.(对他来讲房间里面太暗了什么也看不见补充:too...to与so...that的转换The box is too heavy for him to lift.(这个盒子对他来讲太沉了,他抬不动The box is so heavy that he can’t lift it.(这个盒子太沉了,他抬不动。

      C.It is/was+形容词+of sb. to do sth.(形容词能修饰sb.和to do sth.)It is/was+形容词+for sb. to do sth.(形容词只能修饰to do sth.)It was very clever of him to do it like that.(他那样做很聪明他很聪明,像那样做也是聪明之举)It was hard for him to say goodbye.(对他来讲,说声再见是很难的是说再见很难,不能说他很难)注意:of sb.句型可以转换成一个不定式作状语的句子,而for sb.句型则不可以It is very kind of you to help me.→You are very kind to help me.(你帮助我真是太好了补充:形容词/副词+enough to do sth.与so...that...can do sth.的转换:He runs fast enough to get there first.(他跑得快可以第一个到那里→He runs so fast that he can get there first.(他跑得那样快以至于他能第一个到那里。

      D.Why (not) do?为什么(不)……?A:Let’s go out to eat tonight.(今晚我们出去吃吧 B:Yes,why not?(好啊E.There be...to do有……要做There are some clothes to wash.(有一些衣服要洗There is a room to clean.(有一间屋子要打扫F.be about to do sth.正要去做;将要去做I was about to go to bed when the policeman knocked at the door.(当警察敲门的时候我刚要睡觉G.had better do sth.最好……/had better not do sth.最好不要……You had better not eat too much.(你最好不要吃太多H.so as to...为了so as to...一般不能放在。

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