人教新课标高中英语必修三《Unit 1 Period Four》课件

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1、Unit 1 Festivals around the world,达标检测,语法导学,内容索引,Period Four GrammarModal verbs(),语法导学,阅读以下教材原句，感悟体会加颜色情态动词的意思和用法，并总结规律。 1.Most ancient festivals would celebrate the end of cold weather，planting in spring and harvest in autumn. 2.Some festivals are held to honour the dead or to satisfy the ancestors

2、，who might return either to help or to do harm. 3.For the Japanese festival Obon，people should go to clean graves and light incense in memory of their ancestors. 4.Harvest and Thanksgiving festivals can be very happy events. 5.At the Spring Festival in China，people eat dumplings，fish and meat and ma

3、y give children lucky money in red paper.,1.以上四个句子都使用了情态动词，其后都接动词 。 2.第1句中的would表示过去习惯性动作，意为“ ”。 3.第2句中的might表示推测，意为“ ”。 4.第3句中的should表示劝告或建议，意为“ ”。 5.第4句中的can表示习惯上的可能性，意为“ ”。 6.第5句中的may表示猜测，意为“ ”。,原形,过去常会,可能会,应该,可能,可能会,1.can与could的用法 (1)表示能力(could是过去时)。 My grandmother can do some shopping on the In

4、ternet，but she couldnt last year. 我奶奶会网购了，但是去年她还不会。 (2)表示猜测，意为“可能”，一般用于疑问句和否定句(could是过去时)。 Can this news be true？这则消息是真的吗？,(3)表示请求和许可(could表示更委婉的语气，回答时只能用can)。 Can/Could I go now? Yes，you can. 我现在可以走了吗？ 是的，可以。 (4)用于肯定的陈述句中，表示理论上或习惯上的可能性。 As we all know，anyone can make mistakes. 我们都知道，任何人都可能犯错。,(5)习惯

5、用法“cannot.too.”表示“无论怎样都不过分，越越好”。有时cannot可用can never替代。 We cannot thank you too much for what youve done for us. 对于你们为我们所做的一切，我们怎么感激你们都不过分。,考点警示 can与be able to (1)can只有现在时和过去时(could)，而be able to则有更多的时态变化，在将来时、完成时和非谓语动词中只能用be able to。 (2)can一般指自身具有的能力，而be able to则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suc

6、ceed in doing。,(3)在否定结构中was/were able to与could没有区别。 This time I failed in the exam，but Ill be able to pass the exam next time. 这次我考试不及格，但下次考试我能及格。(经过努力) She ran fast but she couldnt/wasnt able to catch the bus. 她跑得很快可还是没能赶上公共汽车。,2.may与might的用法 (1)表示允许、许可。might在语气上比may更委婉。以may/might开头的问句在否定回答中要用mustn

7、t/cant。 May/Might I play the computer games after supper? Yes，you may./No，you mustnt/cant. 晚饭后我可以玩电脑游戏吗？ 是的，可以。/不，不行。,(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。 I think he may come tomorrow. 我认为明天他可能会来。 He told me he might be late. 他告诉我他可能会迟到。 (3)may用于祈使句表示祝愿。 May

8、 you succeed.祝你成功。,3.will与would的用法 (1)表示意志、意愿和决心。用于各种人称，will指现在，would指过去。 I will never do that again.我再也不那样做了。 They said that they would fight against the haze. 他们说会与雾霾作斗争的。 (2)表示请求、建议。用于第二人称的疑问句，would表示更委婉的语气。 Will/Would you please take a message for me? 你能帮我捎个口信吗？,(3)表示习惯性的动作，意为“总是；习惯于”。will指现在，wo

9、uld指过去。 Fish will die without water.没有水鱼儿就会死。 考点警示 would与used to 两者均表示“过去常常”，但would仅表示过去的习惯性动作(不表状态)，现在有可能还如此，也可能不再那样；used to既表示过去的动作也表示过去的状态，不过现在不再做或不再有那种状态了。 He would take a walk near the forest in the evening. 以前，他晚间常在森林附近散步。 He used to take a walk near the forest in the evening. 他过去常在晚间到森林附近散步。(

10、而现在已不在那里散步了),(4)用于否定句，表示“不肯；不乐意”。 No matter what I said，he wouldnt listen to me. 无论我说什么，他就是不肯听我的。 4.shall与should的用法 (1)shall用于第一、第三人称的疑问句中，表示说话人征求对方的意见或向对方请示。 What shall I/we do next? 我(们)下一步该做什么？ When shall my brother be able to leave hospital? 我哥哥什么时候可以出院？,(2)shall用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。 Yo

11、u shall go with me.(命令)你跟我走。 You shall have a new dress for your birthday. (允诺)你在生日时会得到一件新衣服。 He shall be punished.(威胁)他会受到惩罚的。,(3)should表示劝告或建议，意为“应该”，其同义词是ought to；还可表示可能性或表示惊讶、愤怒、失望等特殊情感。 You should go to class right away. 你应该立刻去上课。 Dont ask me.How should I know? 别问我，我怎么会知道？,5.must的用法 (1)表示“必须”，语

12、气比should，ought to强烈。其否定形式为mustnt (不准；禁止)。 You mustnt do that，because you must keep your word. 你不能那么做，因为你得遵守诺言。,考点警示 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 I finish the paper today? Yes，you must./No，you neednt/dont have to. 今天我必须完成论文吗？ 是的，你必须。/不，你不必。,(2)表示有把握的肯定推测，只能用在肯定句中，意为“一定；准

13、是”；在否定句、疑问句中要用cant代替。 You have worked hard all day.You must be tired. 辛苦工作了一整天，你一定累了。(对现在情况的推测判断) (3)表示感情色彩，意为“偏偏；偏要”，常指令人不快的事情。 The car must break down just when I was about to start. 我正要出发时车偏偏抛锚了。,.用适当的情态动词填空 1.In todays information age，the loss of data cause serious problems for a company.(2018北京

14、) 2.Samuel，the tallest boy in our class， easily reach the books on the top shelf.(2017北京) 3.You be careful with the camera.It costs！(2015四川) 4.You feel all the training a waste of time，but Im a hundred percent sure later youll be grateful you did it.(2015陕西),can,can,must,may,答案,5.It was so noisy tha

15、t we hear ourselves speak.(2015浙江) 6.It was sad to me that they，so poor themselves， bring me food. (2014江苏) 7.I still remember my happy childhood when my mother take me to Disneyland at weekends.(2014四川) 8.When I was a child，I watch TV whenever I wanted to. (2013江西),答案,couldnt,should,would,could,.单句

16、改错(每小题仅有1处错误) 1.As a kid，I loved to watch cartoons，but no matter how many times I asked to watch them，my parents would not to let me. (2018全国，短文改错) 2.We can chose between staying at home and taking a trip. (2016全国，短文改错),答案,choose,3.Some classmates suggest we can go to places of interest nearby. (201

17、6全国，短文改错)4.So real friendship should able to stand all sorts of tests. (2014大纲全国，短文改错),或Some classmates suggest we can go to places of interest nearby. (2016全国，短文改错),答案,should, be,5.Meanwhile，I found out that with more patience I must make my toys last.(2012新课标全国，短文改错) 6.Mom，though I may often say i

18、t，I do love you. (2012四川，短文改错) 7.I have been practising for three weeks now，but I still couldnt get used to itin fact，Ive nearly killed three people.(2010四川，短文改错),答案,could/might, not,cant,达标检测,.选词填空 shall，may，must，might，wont，cant 1.Four hundred dollars for a pair of shoes.You be joking! 2.I finish r

19、eading the book tomorrow，but I am not sure about it. 3.There are no classes today. we go skating now? 4.I am so weak that I carry the heavy bag. 5.The door open.There be something wrong with it.,must,may/might,Shall,cant,wont must,.单句改错(每小题仅有1处错误) 1.Sarah didnt believe his explanation and cant forgi

20、ve him. 2.It mustnt be Peter，for he has gone to Beijing. 3.A taxi is forbidden to drive in，so you can be able to get one outside the station.,couldnt,cant,will,4.You cant never be too careful to cross the road.5.When we lived in that village，we will often play together in the river there.,或You cant

21、never be too careful to cross the road.,can,would,.完成句子 1.他们一定没在图书馆里读书。 They in the library. 2.我可以在公园里摘花吗？ 不，不行。 I pick flowers in this park? No，you . 3.房前禁止停车。 Cars in front of the house.,cant be reading,May,cant/mustnt,mustnt be parked,4.我感到遗憾她竟会如此粗心。 I am sorry that she . 5.他在北京时，常来看我。 He when he was in Beijing.,should be so careless,would come to see me,