浦东暑假补习班上海高二英语暑假辅导班.ppt

1、1. The topic of the poem cant be travel. 2. It must be something more personal. 3. It may be friendship. 4. It might be the journey through life.,All these sentences express opinions. Sentences 1 and 2 suggest the speaker is certain of something. Sentences 3 and 4 suggest the speaker is not certain.

2、,情态动词中must，can，could，may，might都表推测。 其中must的可能性最大，can/could次之，may/might最小。 具体用法如下：,表推测的情态动词： must,can, could, may, might,1.must的用法 （1）表示推测“可能性”时，意思是“一定、准是”，语气较肯定，较有把握。 HemustbeAmerican. =ItiscertainthatheisAmerican. 他准是个美国人。,更多资源,（2）must表推测只能用于肯定句。如果要表示“一定不、肯定不”的意思时，应用cant，如询问某种可能时，应用can。 Hemustknowm

3、yaddress. 他肯定知道我的地址。（一定） Hecantknowmyaddress. 他肯定不知道我的地址。（一定不） Canheknowmyaddress? 他会知道我的地址吗？（询问可能性）,（3）must表示推测时，可以推测现在/正在发生的动作/过去发生的动作。 Hemusthaveacarnow.（现在） 他一定有辆小汽车。 Hemustbedoinghisexercisesinthe classroom.（进行） 他一定在教室里做练习。 Hemusthavefinishedthework.（过去） 他一定已完成了工作。 注：must表示推测时很少用于将来的情况。一般不用Hemu

4、stcometomorrow。用Itscertain/Imsure表达。,（4）在反意疑问句中，当附属部分含有表示推测意义的must时，疑问部分的助动词应与must后面的动词在非推测情况下的用法保持一致。 Hemustbeaworker,isnthe?（现在） 他准时个工人，是吗？ Itmusthaverainedlastnight,didntit?（过去） 昨晚一定下雨了，是不是？ YoumusthavelearnedEnglish for many years,haventyou?（完成时） 你一定学了好多年英语，是吗？,2.can/could的用法 （1）can表示推测“可能性”时，往往

5、用于否定句或疑问句。cant “一定不”，语气很肯定。can在疑问句中意思是“会、可能”。 Hecantbeathome. =Itisimpossiblethatheisathome. 他一定不在家。,（2）can/cant后可接进行时/完成时，表示对现在发生的动作或过去发生的动作进行推测。 Theycantbereadinginthelibrary. 他们一定不在图书馆读书。 HecanthavegonetoShanghaiforIsawhimaminuteago. 他不可能去了上海，我刚才还看见他。 Itssolate.Wherecanshehavegone? 天晚了，她可能去哪儿了呢？,

6、（3）在反意疑问句中，当陈述部分含有表示推测意义的cant时，疑问部分的助动词应与cant后面的动词在非推测情况下的用法保持一致。 Hecantbeateacher,ishe? 他不是教师，是吗？ Shecanthavefinishedherhomework, has she? 她一定没有完成家庭作业，是不是？,（4）could可用于表示某事有可能发生或可能是事实。 Donteatit.Itcouldbepoisonous. 不要吃它，可能有毒。 Theplanecouldbedelayedbyfog. 飞机可能会因为雾晚点。 （5）could还可以用于表示客气、委婉、礼貌的请求语气。 Exc

7、useme,couldyoutellmethe way to thebusstation? Couldyouhelpme?,（6）couldnt表示否定推测，表示某事不可能真实，或由于特定事实或环境某事肯定不会发生。 Itcouldntpossiblybepoison. 这不可能是毒药。 注：有时与形容词的比较级连用强调某人或某物不可能再更多地具有某种属性。 Youcouldntbemorewrong. 你真是大错特错。 Icouldntbehappier. 我简直是幸福极了。,3.may和might的用法 （1）may,might表示推测“可能性”时，意思是“可能”、“也许”，语气没有mus

8、t肯定。 Hemay/mightbeAmerican. =ItispossiblethatheisAmerican. 他可能是个美国人。 注：might不表示过去时态，只是语气上比may更委婉，表示的可能性更小。,（2）may,might表推测时，可以用于否定句，意思是“可能不、也许不”，但不用于疑问句。 Hemay/mightnotbeathome. 他也许不在家。,（3）may,might可以推测现在正在发生的动作或过去发生的动作。 Hemay/mightbesleepingnow.（现在） 他可能正在睡觉。 Theboymay/mightnotbewatchingTVathome.（现在

9、） 这个男孩可能没在家看电视。 Thesestudentsmay/mighthaveseen the filmbefore.（过去） 这些学生以前可能看过这部电影。,（4）may,might还可以推测将来的情况。 Ithinkweshouldtakeraincoats with us,itmayrain. 我想我们应该带上雨衣，可能要下雨了。 Shemightnotcomethisafternoon. 她今天下午可能不来了。,1. Liza _ well not want to go on the trip - she hates traveling. (2008全国II) A. will B

10、. can C. must D. may 2. She _ have left school, for her bike is still here. (2008天津) A. cant B. wouldnt C. shouldnt D. neednt 3. -I cant find my purse anywhere. -You _ have lost it while shopping. (2008重庆) A. may B. can C. should D. would,高考链接,4. Peter _ be really difficult at times even though hes

11、a nice person in general. (2008辽宁) A. shall B. should C. can D. must 5. You _ be hungry already - you had lunch only two hours ago! (2008浙江) A. wouldnt B. cant C. mustnt D. neednt,高考链接,1. You should read the poem sometimes. 2. I think all poems should have rhymes. 3. You should have asked my dad. 4.

12、 Could you answer a few questions, please? 5. I could quote some of my own poems. 6. Would you like to say the second verse now? 7. I would love to quote you some modern poems if I could.,1. Expressing advisability Should implies, “This is a good idea. This is good advice.” I should study harder for

13、 the exam. (This is good advice. Maybe I will study harder, maybe I wontbut is a good idea to do so.) You should not eat rotten eggs. (This is good advice. It will be bad if you eat them. It is a good idea not to eat them.),should,I should have studied harder for the exam. (I did not study hard enou

14、gh for the exam. The result was bad. It would have been a good idea to study harder.) You should not have eaten rotten eggs. (You ate rotten eggs. The result was bad. It would have been a good idea not to eat them.),2. Expressing expectation In this case, should means will probably. The pie that Mom

15、 is making should be good. (I expect probably with good reason that the pie will be good.) It should not be a problem if you are late. (I expect probably with good reason that you being late wont be a problem.) We should have heard from her by now. (We expected to hear from her, but we have not yet.

16、),1. Expressing ability (sometimes possibility or suggestion) I could run that race. (I have the ability to run it.) I could become a mime. (Its a possibilityI have the ability to do it.) We could go to the circus. (We have the ability to go its a suggestion.),could,2. Using the conditional (general

17、ly with an “if” clause) If I try, I can break the world record. (I have the ability to break the record and it is a very real possibility.) If I tried, I could break the world record. (I might have the ability but probably will not try to do it.) If I had tried, I could have broken the record. (I mi

18、ght have had the ability, but I did not do it.),3. Making polite requests Can you help me? (More informal.) Could you help me? (More polite.) 4. Expressing ability in the PAST I can eat an entire pizza right now. (I have the ability to eat the whole pizza.) Last week I could eat two pizzas. (Last we

19、ek I had the ability to eat two pizzas.) Last week I could have eaten two pizzas. (Last week I might have had the ability, but I did not really eat them.),would,1. Expressing willingness (but often inability as well) or desire I would help you. (I am willing to help, but I cant.) I would like a cup

20、of tea. (I want a cup of teabut more polite.),2. Using the conditional (generally with an “if” clause) If I go to Anns house, I will eat spaghetti and meatballs. (I have the ability to go there and to eat the spaghetti.) If I went to Anns house, I would eat spaghetti and meatballs. (I might have the

21、 ability, but I probably will not actually go to Anns and, therefore, will not eat the spaghetti.),If I had gone to Anns house, I would have eaten spaghetti and meatballs. (I might have had the ability to go there and eat spaghetti, but I neither went to Anns nor ate the spaghetti.),3. Making polite

22、 requests Would you like to go to dinner? (Do you want to go? AND Will you go?) Would you help me? (Can you help me? AND Will you?),4. Indicating the PAST When I was a kid, I played in the sandbox. (At a specific time my childhood I played there) When I was a kid, I would play in the sandbox. (At un

23、specific times throughout my childhood, I would play there. Expresses an habitual actionsomething done somewhat regularly during a certain period of time.),1. 昨天的会议很重要，你不应该缺席的。 Yesterdays meeting was very important. You shouldnt have missed it. 2. 他一定很高兴，因为他脸上挂着笑容。 He must be very happy because his

24、face wears smiles.,Translations,3. 我叔叔不可能在家，因为他已经去北京出差了。 My uncle cant be at home for/because he has gone to Beijing on business. 4. 如果我昨天考试认真一点，就能够通过考试了。 If I had been more careful in yesterdays exam, I could have passed it.,5. 请你再重复一遍答案，好吗？ Would you (please) repeat the answer? 6. 你可以向他求助，也许他帮得上忙。

25、 You can turn to him for help. He may/might lend you a hand.,1. -Are you coming to Jeffs party? -Im not sure. I _ go to the concert instead. A. must B. would C. should D. might 2. I was really anxious about you. You _ home without a word. A. mustnt leave B. shouldnt have left C. couldnt have left D.

26、 neednt leave,更多资源,3. -Is John coming by train? -He should, but he _ not. He likes driving his car. A. must B. can C. need D. may 4. A left luggage office is a place where bags _ be left for a short time, especially at a railway station. A. should B. can C. must D. will,5. My sister met him at the Grand Theatre yesterday afternoon, so he _ have attended your lecture. A. couldnt B. mustnt C. neednt D. shouldnt 6. You cant imagine that a well-behaved gentleman _ be so rude to a lady. A. might B. need C. should D. would,7. It has been announced that candidat