2015-2016高中英语人教版必修3课件：UNIT 1 FESTIVALS AROUND THE WORLD 第2课时 .ppt

1、成才之路 英语路漫漫其修远兮 吾将上下而求索人教版 必修3Festivals around the worldUnit 1第二课时 Learning about Language情态动词()Unit 1课堂要点探究2课堂达标验收3课前新知预习1课 时 作 业4课前新知预习根据句意观察思考下列各句中情态动词的意义。Most ancient festivals would celebrate the end of cold weather,planting in spring and harvest in autumn.(指“_”)At that time people would starve

2、if food was difficult to find,especially during the cold winter months.(指“_”)Some festivals are held to honour the dead or to satisfy the ancestors,who might return either to help or to do harm.(表示“_”)They also light lamps and play music because they think that this will lead the ancestors back to e

3、arth.(表示“_”)Festivals can also be held to honour famous people.(表示“_”)Harvest and Thanksgiving festivals can be very happy events.(表示“理论上或习惯上的_”)At the Spring Festival in China,people eat dumplings,fish and meat and may give children lucky money in red paper.(表示“_”)答案：过去常常 过去将要 猜测 将要做允许 可能性 许可课堂要点探究

4、一、情态动词的定义情态动词表示说话人的某种感情或语气，对某一动作或状态的某种态度，表示“需要”“可以”“应该”等意义。情态动词有以下特征：1不能单独作谓语，除ought to和used to以外，后面只能接不带to的不定式。2没有人称和数的变化。但有些情态动词，如：can,will,dare有一般现在时和过去时的变化。3情态动词的“时态”形式并不是区分时间的主要标志，很多情况下，情态动词的现在时形式和过去时形式都可用来表示现在时间、过去时间或将来时间。二、情态动词的基本用法(一)can与could的用法1表示能力(could是过去式)。The clever student can solve

5、such difficult problems in a short time.这位聪明的学生能够在很短的时间内解决这样难的问题。When she was 8 years old，she could play the piano very well.当她八岁时，她能很好地弹钢琴。2表示猜测“可能”，一般用于疑问句和否定句(could是过去式)。Can the lady over there be our boss?在那儿的那位女士可能是我们的老板吗？It cant be her.I saw her in the office just now.不可能是她。我刚刚在办公室里看到她了。My gla

6、sses arent here.Where can I have put them?我的眼镜不在这里。我可能把它们放哪儿呢？3表示请求允许或允许，常用于第一人称或第二人称。Can/Could I use your mobile phone？(请求允许)我可以用一下你的手机吗？Of course，you can.(表示允许)当然可以。名师点拨(1)在请求允许时，与can相比could语气更为委婉，没有时态、意义上的区别。(2)表示允许某人做某事时，用can而不用could。(3)can表示惊异、怀疑或不相信的态度，主要用于疑问句或否定句。How can you be so rude?你怎么能这么

7、粗鲁？易混辨析After many years hard work，he was able to achieve his goal.数年的努力之后，他(能够)实现了自己的目标。时态内涵can只有现在时和过去时指自身具有的能力be able to有更多的时态变化，可用于将来时，完成时和非谓语动词中表示经过一段时间的努力后所具有的能力，相当于manage to do或succeed in doing巧学助记口诀记忆can/couldcan表能力和可以，否定、疑问(在否定句及疑问句中)表猜疑。could为can的过去式，语气比can更客气。(二)may与might的用法1表示允许、许可。might在

8、语气上比may更委婉。以may/might开头的问句在否定回答中要用mustnt。如：You may keep the book for 2 weeks.这本书你可以看两周。May I use your telephone?我可以用你的电话吗？Yes,you may./No,you mustnt.是的，可以。/不，不可以。2表示把握不大的推测，意为“可能”，用于肯定句。might语气更加不肯定，指现在或将来，只有在宾语从句中might do(be)才表示过去的可能性。如：I think he may come today(tomorrow)我认为今天(明天)他可能会来。I thought yo

9、u might like something to read,so I bought some books for you.我想你可能喜欢读点东西，因此我给你买了些书。3may用于祈使句表示祝愿。如：May you have a good journey!祝你旅行愉快！May you succeed!祝你成功！(三)will与would的用法1表示意志、意愿。用于各种人称，will指现在，would指过去。如：I will tell you all about it.我乐意告诉你一切。She said that she would buy a car.她说她会买一辆汽车。2表示请求、建议。用于

10、第二人称的疑问句，would表示更委婉的语气。如：Would you mind opening the window for me?请你为我打开窗户好吗？3表示习惯性的动作，意思是“总是，习惯于”。will指现在，would指过去。如：Fish will die without water.鱼离开水总是要死的。She would sit there for hours watching ships.她过去总是坐在那里几个钟头看船。易混辨析would表示“过去常常”，但仅表示过去的习惯性动作(不表示状态)，现在有可能还如此，也可能不再那样used to表示“过去常常”，既表示过去的动作也表示过去

11、的状态，不过现在不再做或不再有那种状态了(四)shall与should的用法1shall的用法。陈述句的第二、三人称表示允许、警告、命令、决心、威胁等疑问句的第一、三人称表示征求对方意见陈述句的第一人称表示将来You shall have my answer tomorrow.(第二人称陈述句，表示允许)你明天可以得到我的答复。He shall be punished.(第三人称陈述句，表示警告)他应受到惩罚。Shall we go to the theatre this evening？(疑问句，表示征求对方意见)我们今晚去看戏好吗？I shall go to London next mon

12、th.(表示将来)下个月我将去伦敦。2should的用法表示劝告或建议，作“应该”讲。As a student,you should listen to your teachers.作为一名学生，你应该听老师的话。用于推测，意为“可能；按理说应该”。If the train is on time,she should arrive in Beijing by seven.如果火车准点的话，她应该7点到达北京。(五)must的用法1表示“必须”，语气比should，ought to强烈。其否定形式为mustnt(不准，禁止)。You must practise your spoken Engli

13、sh if you want to improve.如果你想提高，就必须练习英语口语。名师点拨以must开头的一般疑问句的肯定回答中要用must，否定回答中要用neednt/dont have to。Must we hand in our exercises today?我们必须今天交作业吗？Yes,you must./No,you neednt.是的，必须交。/不，不必交。2表示有把握的肯定推测，只能用在肯定句中，意思是“一定，准是”。She must be tired after such a long walk.走了这么长的路，她一定累了。You must be joking.你一定是在

14、开玩笑吧。3有时must表示“偏要；硬要；偏偏”，指做令人不快的事情。例如：Must you shout so loudly?你非要这么大声嚷嚷吗？If you must smoke,at least you could use an ashtray.如果你一定要吸烟，起码可以用一个烟灰缸吧。课堂达标验收.语法填空1The door _ open，no matter how hard she pushed.答案：wouldnt句意：无论她怎样用力推，这扇门就是不开。wouldnt“不肯；不愿意”符合句意。2Theres no light onthey _ be at home.答案：cant句

15、意：屋里没有亮灯他们不可能在家。can表示实际的可能性时，常用于否定句和疑问句中，用于否定句时，意为“不可能”。3Must he come to sign this paper himself?Yes,he _.答案：must句意：他必须过来亲自签署这份文件吗？是的，必须。must可以表“推测”或“必须”，当表示“必须”时，简单答语也必须用must。4Isnt that your teacher over there?No,it _ be him.Im sure he doesnt wear glasses.答案：cantcant表示不可能。根据语境及答语中的“Im sure”，表示答话人肯定

16、那不是他老师。5When we worked in the same office,we _ often have coffee together.答案：would句意：当我们在同一个办公室工作的时候，我们经常一起喝咖啡。would在此表过去习惯性的动作。6A computer _ think for itself;it must be told what to do.答案：cantcan可以表示一种客观上的能力，本句cant表示“不能，不会”。7(2015北京，29改编)Cant you stay a little longer?Its getting late.I really_go no

17、w.My daughter is home alone.答案：must由答语中空格所在句前后句句意可知，此处指说话人觉得自己“必须”走了，故填must。8You _ be tiredyouve only been working for an hour.答案：cant根据题意，这里表示“不可能”。否定句、疑问句中常用can。9Advertisements are powerful and some companies try to mislead us,so we _ be careful when reading them.答案：must句意：广告的影响是非常大的，而一些公司努力利用广告误导

18、我们，因此我们在看广告时，一定要仔细。must“一定，必须”，符合题意。10Can I pay the bill by check?Sorry,sir.But it is the management rules of our hotel that payment _ be made in cash.答案：shall此题中的the management rules决定答案为shall。因为表根据书面规定、法律条文及合同的要求必须干某事用shall。11Im going to Europe on vacation together with John if I _find the money.答

19、案：can句意：如果我能弄到钱，我就和约翰一起去欧洲度假。can能够，表示能力；might可能；would将要；need需要。12To stop the plant from exploding is challenging and demanding.Who do you think can do the job?_ the brave workers have a try?答案：Shallshall用于第一、第三人称疑问句中，表示说话人征求对方的意见或向对方请示。13When winter comes,_ spring be far behind?答案：can句意：冬天来了，春天还会远吗？

20、为理论上的推测，应填can。14.Could I borrow your dictionary?Yes,of course you _.答案：can原题中的could不是过去式，而是表示委婉、客气的礼貌用语。因此用could提问时，用can回答。同样用would，might提问，用will和may回答。15Mum,would you please buy me an iPad?If you can help do the dishes the whole vacation,you _ have one as a reward.答案：shall句意：妈妈，给我买个iPad好吗？如果你能够在整个假

21、期中帮助我洗盘子的话，你就会得到一个作为回报。shall 常用于第二、三人称主语后面表示说话人的允诺。.在括号内填入恰当的情态动词1Youve been working all day.You _ be very tired.2(The doorbell rings.)I wonder who that is.It _ be Lisa.Shes still in the library at this time.3It is a long time since we met last time.You _ come and see us more often.4I havent decided

22、 where Im going for my holidays.I _ go to Australia.5Who was the man talking with your teacher?Im not sure.It _ be her brother.6When he was there,he _ go to that coffee shop at the corner after work every day.7You _ play the piano while the baby is sleeping.8Tom,please lend me a hand.My drawer _ not open.答案：1.must2.cant3.should4.may/might5.might6would7.mustnt8.will课 时 作 业点此链接