动词不定式课件3

1、,动词不定式 动词不定式的基本形式是“to+动词原形“, 有时可以不带to.动词不定式没有人称和数的变化, 在句子中不能作谓语。在句中可以作主语、表语、宾语、宾语补足语、定语和状语。,构成：to + do(动词原形),用法： 1. 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.,用作宾语 (v. + to do ) need to do learn to do agree to do plan to do decide to do want t

2、o do hope to do start to do try to do forget to do remember to do like to do stop to do,2. 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 do wish sb. to do get sb. to do expect sb. to do find sb. to

3、 be tell sb. to do would like sb. to do help sb. to do 一般情况下，其后有sb,都作宾语补足语,作宾语补足语不带to 的情况：,Let me do it. I saw him cross the street. 常见动词有： 使役动词: let, make, have (三使） 感官动词: see, watch, notice，observe，四看hear, listen to两听， feel一感觉, help半帮助 比较： I heard her singing in the next room. I heard her sing in

4、the next room.,3. 用作状语(adverbial)：,He came to show me his new CD player. (目的) I went there to see my teacher. (目的) Im glad to see you this morning. (原因) The boy was too young to go to school. (结果) To save water, turn off the tap after you wash hands. (结果) 状语是用于说明地点、时间、原因、目的、结果、条件、方向、程度、方式和伴随状况等的一种句法

5、成份,其位置一般放在句末，但也可放在句首或句中.,4.用作主语,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it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,His work is to

6、 feed the animals. Her job is to look after the patients. My wish is to be a scientist.,Give me something to drink. I have two books to read. They have much food to eat. He asked for a room to live in. I dont have a pen to write with. He bought a toy to play with.,6. 用作定语 (这时不定式与被修饰词有动宾关系。若是不及物动词, 介

7、词不能省略),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 to start has not been decided. (主语) I dont know what to do. (宾语) He can tell you where to get the book. (宾语补足语) The question is who(m) to ask. (表语),找出句子中的不定式, 并说出作用：,1. It takes you ten minutes to get there.

8、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.,状语,表语,宾语,主语,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,主语,宾语补足语,1. 跳舞非常有趣。 2. 种些植物是非常有必要的。,To dance is a lot of fun.,I

9、t is a lot of fun to dance.,To grow plants is very important.,3. 说英语对我来说并不容易。 4. 听到你的声音真高兴。,To hear your voice is so nice.,It is so nice to hear your voice.,To speak English is not easy for me.,1. 我的工作是每天打扫这间屋子。 2. 最上策的计划就是马上离开这儿。 3. 我的梦想就是成为一名科学家。,My work is to clean the room every day.,The best pl

10、an is to leave at once.,My dream is to be a scientist.,1. 他想借用我的录音机。 2. 他们开始读和写。 3. 李琳喜欢玩什么？她喜欢踢足球。 4. 你长大了想做什么？,He wants to borrow my radio.,They began to read and write.,What sports does Li Lin like to play? She likes to play soccer.,What do you want to be when you grow up?,1. 我有许多书要看。 2. 她有几个问题要问

11、。 3. 他有一台电视要修。 4. 我没什么可担心的。,I have many books to read.,She has a few questions to ask.,He has a TV set to repair.,I have nothing to worry about.,5. 他是一个值得信赖的人。 6. 爱迪生是第一个发明电灯的人。 7. 他那生病母亲最多可活三个月。,He is a man to believe in.,Edison was the first man to invent the lights.,His sick mother has three mont

12、hs to live at most.,Exercises,1. - Youve done very well this time. - Its really kind _. A. for you to say so B. for you saying so C. of you to say so D. of you saying so 2. It is better to lose ones life than _. A. if you lose your spirit B. losing his spirit C. to lose ones spirit D. your spirit ge

13、tting lost,C,C,I saw him _ the supermarket just now. a. enteredb. entering c. enter d. to enter,c,They looked for him everywhere and found him _ under the tree. a. liesb. lyingc. layd. 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),b,-Do you remember _ me somewhere in Hangzhou? -Yes. I think thats 2 years ago. a. see b. seeing c. to see d. saw,b,forget/remember to do sth. forget/remember doing sth. stop/go on to do sth stop/go on doing sth,The scientist stopped _ to me though he was busy. a. talking b. to talk c. to ha