1、(四)情态动词的用法语法：情态动词有具体的词义，但也同助动词一样，需要与其他词语一起构成句子的谓语，另外情态动词没有人称和数的变化，情态动词后必须跟动词原形。一、各种情态动词的用法。1. can 的用法：（1）表示能力， “能，会” 。 She can swim fast, but I cant . （2）在口语中常表示许可, “可以” 。 You can use my dictionary.（3）表示推测， “可能” 。 -Can it be our teacher? -No, it cant be our teacher. He is on a visit to the Great Wal
2、l.2. could 的用法：（1）can 的过去式， “能，会 ”。 He could write poems when he was 10.（2）在疑问句中，表示委婉的语气。-Could I use your pen? -Yes, you can. 3. may 的用法：（1）表示请求，许可，比 can 正式。May I borrow your bike?（2）表示推测， “可能，也许” 。It may rain tomorrow.4. must 的用法：（1）表示主观看法， “必须” 。You must stay here until I come back.（2）否定形式 mustnt
3、 表示：“禁止” 。You mustnt be late.（3）表示有把握的推测， “一定” 。The light is on, so she must be at home now.5. shall 的用法：表示征求对方意见， （多用于第一、三人称） 。Shall we go out for a walk? 我们出去散步好吗？6. should 的用法：表示“应该”的意思。We should protect the environment.二：常见表示建议的句型：1. Would you like/love (to do ) sth.? -Would you like to go to th
4、e cinema with me?-Yes, Id like/ love to.2. Shall I/we do sth. ?Shall we go to the zoo?3. Why not do sth. ? = Why dont you do sth.?Why not go and ask your teacher? 4. What/ How about (doing ) sth. ?What about meeting outside the school gate?5. 主语+ had better (not ) do sth. 某人最好做某事Youd better go to ho
5、spital at once. 你最好立刻去医院。专项练习：一、 选择题。（ ）1.-Could you please come to the museum with me this afternoon?-Sorry, I . I have to take a piano lesson at 2 pm. A. couldnt B. mustnt C. cant D. neednt （ ）2. -May we leave the classroom now?-Oh, you . You to leave until the bell rings.A. mustnt; are allowed B.
6、 dont have to; are supposed C. neednt; arent allowed D. cant; arent supposed （ ）3. - I use your ruler, Ling Ling?-Sure. Here you are.A. May B. Would C. Need D. Must （ ）4. It rained heavily, so we stay at home watching TV or surfing the Internet all day.A. could B. had to C. must （ ）5. -Must I leave
7、the room now?-No, you .A. neednt B. cant C. mustnt D. couldnt （ ）6. It doesnt look like rain, so you bring your umbrella with you.A. shouldnt B. mustnt C. cant D. neednt （ ）7. -Could you please pass me the book?- .A. Yes, I could B. No, I couldnt C. Sure. Here you are. D. No, thats no problem （ ） 8.
8、 -Sir, could you please put out your cigarette? This is smoke-free(无烟的) school. - A. Im sorry about this. B. No problem. C. sure, Id love to. D. Never mind. （ ）9. -Would you mind not throwing waste here?- .A. Sorry, I wont do it again B. Sure, Id love to C. Yes, of course D. No, thanks.（ ）10. -Could
9、 you please fold your clothes?- . Its time for school. I have to go now.A. Yes, you can B. sorry, I cant. C. Yes, please. D. Certainly 综合练习：一、 选择题。（ ）1. You wont feel happy at school you get on well with your classmates.A. though B. when C. unless D. because （ ）2. How kind you are! You always do wha
10、t you can me.A. help B. helping C. to help D. helps （ ）3. her husband, she has now become a famous film star.A. Because B. Thanks to C. Thanks for D. With the help （ ）4. The child doesnt need any help. He is old enough to himself.A. put on B. wear C. dress D. take care （ ）5. Tom, would you please th
11、e box? Its for your sister.A. not open B. dont open C. not to open D. to not open 二、 完形填空。Mike wanted a computer. He asked his parents for the money but they said he must get it himself. But how could he get it? He 1 about this when he walked home.He would like to do work for people for money. But n
12、ot many people would ask children to work for them. Maybe he could take away snow for the neighbors. But it was not 2 . He had to wait a long time for that. He couldnt cut grass for their gardens 3 he had no tools to do the work. Then he saw one of his classmates, Dick. He was delivering (送) 4 . “I
13、can do that, too.” He thought, “maybe I can even get the computer 5 away. I can pay for it a little each week.” He ran to 6 up with Dick. Mike asked him a lot of questions. He learned that it was 7 to get twenty-five dollars each week. Dick8 him that the job took about three hours each week and gave
14、 him the phone number of the newspaper manager.Mike also flew home. After he told his mother what he thought, she 9 , “I think it is a good idea,” she said, “Ill call the newspaper.”“Wait, Mum,” Mike said, “Ill call. After all, Im going to be a businessman now.” Mikes mother smiled 10 .( )1. A. said
15、 B. told C. thought D. spoke ( )2. A. spring B. summer C. autumn D. winter ( )3. A. because B. when C. while D. after ( )4. A. newspaper B. bikes C. computers D. tools ( )5. A. now B. right C. just D. only ( )6. A. take B. catch C. carry D. get ( )7. A. friendly B. kind C. possible D. wrong ( )8. A.
16、 saw B. learned C. told D. knew ( )9. A. smiled B. shouted C. cried D. worried ( )10.A. sadly B. happily C. politely D. angrily 三、 阅读理解。Dick was a college student. His parents were poor, so he had to work during his holidays to get enough money for his studies.One summer he got a job in a butchers s
17、hop(肉店) during the daytime, and another in a hospital at night. In the shop, he learned to cut and sell meat. He did very well and almost all people knew him. In the hospital, of course, Dick did the easiest jobs. He helped to lift people and carry them from one part of the hospital to another. Both
18、 in the butchers shop and in the hospital, Dick had to wear white clothes.One day a woman was ill and was sent to the hospital. The doctor said that she needed an operation (手术 ) at once. The woman was already frightened when she thought about the operation. When she saw the young man coming to get
19、her, she was even more frightened.“No! No!” she cried. “I wont let the butcher operate on me!” With these words, she fainted away (晕过去).( ) 1. Dick had to work during his holidays because .A. his parents told him to make more friendsB. he couldnt go on with his studies without enough moneyC. he want
20、ed to become a rich manD. he had nothing to do( ) 2. One summer Dick .A. wanted to become not only a butcher but also a doctorB. worked only during the daytimeC. got two different jobs at two placesD. was free only at night( ) 3. The underlined word “frightened” in the story means .A. scared B. happ
21、y C. worried D. angry ( )4. When the woman saw Dick, .A. she was glad to meet him there B. she knew he was a doctor C. she asked for his helpD. she thought he would operate on her( )5. Which of the following is TRUE?A. Dick was a good doctor.B. Dick was weak in his lessons. C. The woman saw Dick in the butchers shop before.D. Dick worked in the hospital during the winter.
