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1、Grammar,Modal verbs,情态动词(二),should 和ought to后面跟动词不定式的 完成式, 其肯定句表示 “过去应该做而未做”, 其否定句则表示 “过去不该做但做了”。 You should/ought to have made the decision a week ago. I shouldnt have made such a foolish mistake. 多数情况下, ought to 可与should互换使用。 ought to的反意疑问句用shouldnt替代。,注意,You ought to have helped him with his Engl
2、ish, _ you ? A. wont you B. ought not you C. shouldnt you D. wouldnt you,C,三者均表示建议, 意为“应该”, “应当”或 “最好做”。三者的语气程度为渐强。 had better 指一般性的建议, 最弱。 should&ought to 含义相近, 常可互换。 区别在于, ought to 常指特殊情况下的 “应当”。Should 则指一般情况。如：,had better, should & ought to,Shall 用于第一, 三人称的疑问句中, 表征求 意见或请求; 用于第二, 三人称的陈述句中,表命令,警告,
3、允诺, 威胁等; should 表劝告, 建议, 命令, 顺理成章的, 和ought to一样。 疑问句中常用should代替ought to。 ought to 表应该, 语气比should强。,shall, should &ought to,You ought to help him because he is in trouble now. (语气强, 有命令意味) You should have a rest after finishing your sports. (一般性建议) You ought to call the police when you find something
4、 wrong in your house. He should take care of the babies tonight.,注意对need问句的回答: -Need I finish the work today? -Yes, _. No, _. No, _.,you must,you neednt,you dont have to,Translation:,1. 你每天最少要练习一小时口语。 You must practise speaking English at least an hour a day 2. 我每天不得不练习一小时口语！ I have to practise spea
5、king English an hour a day！,3. 你应该每天练习说英语不止一小时。 You ought to/should practice English for more than an hour 4. 你应该读一下这个。它写得很好。 You ought to/should read this Its very good 5. 你必须读这个。写得精彩极了！ You must read this. Its marvelous！,I thought you _ like something to read, so I have brought you some books. A.
6、may B. might C. would D. must 2. Where is my pen? I _it. might lose B. would have lost C. should have lost D. must have lost,B,D,考题专练,3. I didnt hear the phone. I _ asleep A. must be B. must have been C. should be D. should have been 4. Its nearly seven oclock . Jack _ be here at any moment. A. must
7、 B. need C. should D. could,B,C,5. -There were already five people in the car, but they managed to take me as well. -It _ a comfortable journey. A. cant be B. shouldnt be C. mustnt have been D. couldnt have been,D,6. -Did the train arrive in time? -No. It _ two hours ago. A. must have arrived B. oug
8、ht to have arrived C. must arrive D. ought to arrive,B,7. -Must I drive to his house and pick up the children?” - No, _.” A. you shouldnt B. you might not C. you neednt D. you mustnt,C,8. We didnt see Tom at the meeting yesterday. He _ it. A. mustnt have attended B. can not have attended C. neednt h
9、ave attended D. would have not attended,B,9. You _ such a long composition. The teacher only asked for 300 words. You have written 600. A. mustnt have written B. couldnt have written C. neednt have written D. do not have to write,C,10. There is someone knocking at the door. _ it be Tom? A. can B. mu
10、st C. should D. ought to 11. Two years ago, my husband bought me a bicycle. If you live in town, it is often faster than a car and you _ worry about parking. A. must not B. may not C. should not D. dont have to,A,D,I think Ill give Bob a ring later in the week. You _. You havent been in touch with h
11、im for ages. A. will B. may C. have to D. should,D,练习坊,I. Choose the correct answer.,2. John, look at the time. _ you play the piano at such a late hour? A. Must B. Can C. May D. Should,A,3. There _ any difficulty about passing the road test since you have practiced a lot in the driving school. A. m
12、ustnt be B. shant have C. shouldnt be D. neednt have,C,4. The World Wide Web is sometimes jokingly called the World Wide Wait because it _ be very slow. A. Should B. must C. will D. can 5. Helen _ go on the trip with us, but she isnt quite sure yet. A. shall B. must C. may D. can,D,C,6. Someone is k
13、nocking at the door. _ it be Venis? No, it _ be her; she left for New York this morning. A. Can; mustnt B. Might; cant C. May; doesnt D. Can; cant,D,7. Mike promised his doctor he _ not drink, and he has never drunk ever since. A. might B. should C. could D. would,D,8. Is there a movie on in the cin
14、ema tonight? There _ be. I will phone the cinema and find it out. A. might B. should C. can D. must,A,9. When I was studying at Beijing University, I _ take a walk along the lake every evening. A. will B. would C. could D. shall,B,10. Mr Brown, many students want to see you. _ they wait here or outs
15、ide? A. Shall B. Will C. Can D. Would,A,走进高考,1.(10安徽32) Jack described his father, who _a brave boy many years ago, as a strongwilled man A. would be B. would have been C. must be D. must have been,D,2. (10湖南23) You _ buy a gift, but you can if you want to. A. must B. mustnt C. have to D. dont have to 3. (10江西23) I have told you the truth. _ I keep repeating it? A. Must B. Can C. May D. Will,D,A,4. Some people who dont like
