七年级英语动词不定式课件.ppt

1、RevisionThe infinitive动词不定式动词不定式构成：to+do(动词原形)用法：用法：1.用作宾语用作宾语 (v.+to do)I want to buy a computer.She hopes to find a better job.I wish to go with you.need to do learn to do agree to do plan to do decide to do refuse to dobegin to do start to do try to doforget to do remember to do like to doStop to

2、 dogo on to do2.用作宾语补足语：用作宾语补足语：(v.+sb.+to do)She asked me to help her.The teacher told him to come on time.Edisons mother taught him to read and write.want sb to dowish sb to do get sb to doorder sb to do find sb to be like sb to do would like sb to dohelp sb to do作宾语补足语不带作宾语补足语不带to 的情况：的情况：Let me

3、do it.I saw him cross the street.常见动词有：常见动词有：使役动词使役动词:let,make,have 感官动词感官动词:see,watch,hear,feel,listen to比较：比较：I heard her singing in the next room.I heard her sing in the next room.3.用作状语用作状语(adverbial)：He came to show me his new CD player.I went there to see my teacher.She came back to get her En

4、glish book.The boy was too frightened to move.(目的目的)(目的目的)(目的目的)（结果）（结果）4.4.用作主语用作主语1.To be here at Christmas time 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（这时可将其用形式主语it来替换）来替换）It is my dream to be here at Christmas time.It is his dream to go abroad.It i

5、s easy to say,it is difficult to do.5.用作表语用作表语His work is to feed the animals.Her job is to look after the patients.My wish is to be a scientist.6.用作定语用作定语Give me something to drink.I have two books to read.They have much food to eat.（这时不定式与被修饰词有动宾关系。（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）若是不及物动词，介词不能省略）He

6、 asked for a room to live in.I dont have a pen to write with.The ice is hard enough to skate on.He bought a toy to play with.7.疑问词疑问词who,what,which,where,when,how加加to do可构成不定式短语，在句中可用作主语、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。宾语、宾语补足语、表语等。When to start has not been decided.I dont know what to do.He can tell

7、 you where to get the book.The question is who(m)to ask.(主语主语)(宾语宾语)(宾语补足语宾语补足语)(表语表语)比较（比较（Compare）I dont know what to do.I dont know how to do it.I dont know what to do about it.Exercises:1.-Youve done very well this time.-Its really kind _.A.for you to say so B.for you saying soC.of you to say so

8、 D.of you saying so2.It is better to lose ones life than _.A.if you lose your spiritB.losing his spiritC.to lose ones spiritD.your spirit getting lostCC3.I cant work in this way.-Why not _ it in some other way?A.try to doB.try doingC.trying to doD.trying doing4.Since you find it difficult _ a decisi

9、on,youd better a discussion(讨讨论论)with your parents.A.reach;haveB.reaching;haveC.reach;havingD.to reach;haveBD5.My father hates(痛恨痛恨)_.He never allows me _.A.to smoke;to smokeB.smoking;smokingC.smoke;smokingD.smoking;to smoke6.The girl was beginning _.A.get angryB.to get angryC.getting angryD.angryDB

10、7.There isnt any difference between the two.I really dont know _.A.where to chooseB.which to chooseC.what to chooseD.to choose which8.The bag is too heavy for me _.A.to carry itB.not to carry itC.to carryD.not to carry9.The teacher will teach him _.A.to useB.use itC.how to use itD.usesBCC找出句子中的不定式，并说出作用：1.It takes you ten minutes to get there.2.I hope to see him soon.3.His wish is to become an artist.4.People eat to live,but not live to eat.5.I have a lot to tell you.6.Its not right to be always thinking of oneself.7.We often see him play football.定语定语主语主语状语状语表语表语宾语宾语主语主语宾语补足语宾语补足语