七年级英语动词不定式.ppt

RevisionThe infinitive动词不定式动词不定式制作人：张树梓制作人：张树梓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 dogo on to do2. 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.Edison’s 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 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 English 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 is 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 asked for a room to live in.I don’t 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 don’t know what to do.He can tell 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 don’t know what to do.I don’t know how to do it.I don’t know what to do about it.Exercises:1. -- You’ve done very well this time. -- It’s really kind ________.A. for you to say so B. for you saying soC. of you to say so D. of you saying so2. It is better to lose one’s life than _______.A. if you lose your spiritB. losing his spiritC. to lose one’s spiritD. your spirit getting lostCC3. – I can’t 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 decision, you’d better a discussion( 讨论讨论) with your parents.A. reach; haveB. reaching; haveC. reach; havingD. to reach; haveBD5. 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7. There isn’t any difference between the two. I really don’t 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.It’s 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。