1、动词不定式,动词不定式的基本形式是“to+动词原形“， 在句中可以作主语、宾语、宾语补足语、定语,状语,表语。,1.用作主语,1.To be an actress is my dream.,2. To go abroad is his dream.,3. To say is easy, to do is difficult.,（这时可将其用形式主语it来替换）,It is my dream to be an actress.,It is his dream to go abroad.,It is easy to say, it is difficult to do.,句 型,Its +adj+
2、of sb+to do sth. 你能邀请我，你真是太善良了。 Its very kind of you to invite me. 若形容词是描述人的性格、品质的，如 kind，good，nice，right，wrong，clever， careless，polite，foolish等，用of sb. 你真聪明，解出了这道数学题。 Its clever of you to work out the maths problem.,Its +adj+for sb+to do sth. 若形容词是描述事物的性质，用for sb.这类 形容词有difficult，easy，hard， importa
3、nt，dangerous，（im）possible等。 对孩子们来说，穿过繁忙的街道很危险。 Its very dangerous for children to cross the busy street. 对我们来说，完成这项工作很困难。 Its difficult for us to finish the work.,用法： 2.用作宾语 (v. + to do ) I want to buy a computer. She hopes to find a better job.,希望做 想做 决定做 同意做 选择做 碰巧做 主动提出做 计划做 学做 未能做成 要求做 帮助做 喜欢/讨厌
4、/开始/记得/忘记/停下来/努力/负担起/期待 /拒绝/设法做成,hope /wish to do,want/would like to do,decide to do,agree to do,choose to do,happen to do,offer to do,plan to do,learn to do,fail to do,ask to do,help (to) do,like/hate/start/begin/remember/forget/stop/ try/afford/expect/refuse/manage to do sth,3. 用作宾语补足语：(v. + sb. +
5、 to do ),She asked me to help her. The teacher told him to come on time. Edisons mother taught him to read and write. 要求/想/告诉/希望/鼓励/教/帮助/期待/命令/邀请/警告/ /使ask/want/would like/tell/wish/encourage/ teach/help expect/ order/invite/warn/get sb to do sth,作宾语补足语不带to 的情况：,常见动词有： 一感：feel 二听：listen to,hear 三让:
6、let, make, have 四看: see, look at,watch, notice比较：I saw her crossing the street.I saw her cross the street.she was seen to cross the street.,4. 用作状语：,I went there to see my teacher. She gets up early to catch the early bus every day. The box was too heavy to move.,(目的),(目的),（结果）,5.用作定语,Give me someth
7、ing to drink.,They have much food to eat.,（这时不定式与被修饰词有动宾关系。 若是不及物动词，介词不能省略）,He needed a room to live in.,I dont have a pen to write with.,6.用作表语,His dream is to be a scientist.,Her job is to look after the patients.,7.疑问词who, what, which, where, when, how 加to do可构成不定式短语，在句中可用作主语、 宾语、宾语补足语、表语等。,When
8、to start has not been decided.,I dont know what to do.,He can tell you where to get the book.,The question is how to solve the problem.,(主语),(宾语),(宾语补足语),(表语),说出句子中的不定式，及在句中做什么成分：,It takes you ten minutes to get there. I hope to see him soon. His wish is to become an artist. People eat to live, but
9、not live to eat. I have a lot to tell you. Its not right to be always thinking of oneself. We often see him play football.,定语,主语,状语,表语,宾语,主语,宾语补足语,Exercise,跳舞非常有趣。种树是非常有必要的。说英语对我来说并不容易。,To dance is interesting.,It is interesting to dance.,To plant trees is very important.,To speak English is not eas
10、y for me.,Exercise,我的工作是每天打扫这间屋子。最好的计划就是马上离开这儿。3 我的梦想就是成为一名艺术家。,My work is to clean the room every day.,The best plan is to leave at once.,My dream is to be an artist.,Exercise,他想借我的录音机。他们开始读和写。你长大了想做什么？,He wants to borrow my radio.,They began to read and write.,What do you want to be when you grow
11、up?,1 我有许多书要看。2 她有几个问题要问。我没什么可担心的。4.爱迪生是第一个发明电灯的人。,I have many books to read.,She has a few questions to ask.,I have nothing to worry about.,Edison was the first man to invent the lights.,动名词,Helping others makes us happy.He often practices playing chess with others.practice,enjoy,finish,miss,mind,k
12、eep,stand,cant help,avoid,consider,imaginecant help,give up,be busy, end up,feel like, look forward to, pay attention to,stick to .,1.用作主语,2.用作宾语,既可以跟不定式有可跟动名词的动词：like, love,hate,start,begintry to do /doingforget/remember to do/doingcant help to do /doingstop to do/doing need to do /doing,(意义相同),(意义
13、不同),They looked for him everywhere and found him _ under the tree.a. lies b. lying c. lay d. lain,考点：see/hear/find/watch sb. do sth.(看见某人做了某事） See/hear/find/watch sb. doing sth. （看见某人正在做某事）,I saw him _ the supermarket just now.a. entered b. enteringc. enter d. to enter,The girl who sold matches was
14、found _ the next morning.a. die b. dying c. died d. dead,-Do you remember _ me somewhere in Hangzhou? -Yes. I think thats 2 years ago. a. see b. seeing c. to see d. saw,forget/remember to do sth.forget/remember doing sth.stop/go on to do sthstop/go on doing sth,The scientist stopped _ to me though h
15、e was busy.a. talking b. to talkc. to have talk d. having talk,The more you think about it, the more questions you will think of _. a. ask b. asked c. asking d. to ask,考点：to do 表示目的,The doctor did what he could _ that child.a. save b. to save c. saved d. saving,I have no pen _.a. writing b. writing withc. to write with d. writing,to do 作定语， 如是不及物动词构成不定式短语作定语，其后需接介词,
