人教版高一英语必修三Unit2-情态动词公开课课件-grammar (共33张PPT).ppt

1、GrammarModal Verb情态动词有一定的意义，但没有人称和数的变化，不能独立使用，它和后面的动词构成谓语除ought 和have 外，后面只能接不带to 的不定式。只作情态动词的 can/could,may/might,ought to,must可情态可实义的 need,dare 可情态可助动词的 shall/should,will/would相当于情态动词的 have to,used toEveryone here can speak English.-Could I have a look at your notebook?-Yes,you can./No,you cant.It

2、 cant be Mary.She has fallen ill.Can this news be true?Where can they be?She cant have left school,for her bike is still here.The monkeys look sweet,but they can be very naughty.She can/is able to sing the song in English.I could read when I was four.The fire spread through the hotel quickly but eve

3、ryonewas able to get out.情态动词 含义否定式注意点can/could表能力“能，会”cant“不会，不能”区别 be able to表许可“可以”cant“不可以，不许”代替may表推测“可能”cant“不可能”主要用于否定、疑问句中1表示某人通过努力克服困难做成某事,要用was/were able to.2 could,might,would 表委婉语气用于疑问句,答语仍须用 can,may,will.3 can 用于肯定句中,可表示”有时可能”-May I use your pencil?-Yes,you may./No,you mustnt.She may no

4、t be working now.John might be at home now.Helen may go on the trip with us,but she isnt very sure yet.She may/might have read it in the paper.He may not have finished reading the book.情态动词 含义否定式注意点may/might表许可“可以”mustnt“不许，严禁”口语中也可用cant表推测“可能”May not“可能不”主要用于肯定句，不能用在疑问句（may not 可能不）If you will help

5、 me with my English,I will be very happy.I promised that I would do my best.Will you tell me something about your hometown?Would you please speak again more slowly？He will always take a walk after supper.During the vacation he would often visit me.情态动词用法will表请求(第二人称)表意志,意愿表某种倾向或习惯would更客气的请求过去的意志,意愿

6、过去的倾向或习惯Shall we set off now?You shall do as I say.Tell him that he shall have the book tomorrow.You shall be punished if you do that again.You shouldnt/oughtnt to smoke so much.She shouldnt have left without saying a word.Its five oclock.John should be at home now.We have prepared a fridge of food

7、and drinks.That ought to be enough for the party.Its a pity that he should be so rude to a lady.情态动词用法shall征求对方意见(第一,三人称)表示命令,警告,威胁或允诺(第二,三人称)should/ought to表示劝告,建议,命令或责任“应该,必须”表示推测,“理应,估计,大概,可望”should 还可表示“竟然”-Must I finish all assignments at a time?-Yes,you must./No,you neednt.I dont like this TV

8、set.We must buy a new one.There was no more bus.They had to walk home.You must be the new teacher.There is nobody here.They must have all gone home.My MP4 isnt in my bag.Where can I have put it?John,look at the time.Must you play the piano at such a late hour?情态动词 含义否定式注意点must表必要“必须”neednt“不必”(区别 ha

9、ve to)有时表“偏要”表推测“一定”cant“不可能”只能用于肯定句，不能用于否定、疑问句1.A computer _ think for itself;it must be told what to do.A.cant B.couldnt C.may not D.might not2.The fire spread through the hotel very quickly but everyone _ get out.A.had to B.would C.could D.was able toA D 4.That big cinema _ seat 2,000 people.A.ca

10、n B.should C.ought to D.is able toA 5.Could I borrow your dictionary?Yes,of course you _.A.might B.will C.can D.should6.Might I watch TV after supper?Yes,you _.A.may B.must C.might D.canC A 7.You _ return the book now.You can keep it till next week if you like.A.cant B.mustnt C.neednt D.may not8.Joh

11、nny,you _ play with the knife,you _ hurt yourself.A.wont;cant B.mustnt;may C.shouldnt;must D.cant;shouldntC B 9.-Will you stay for lunch?-Sorry,_.My brother is coming to see me.A.I mustnt B.I cant C.I neednt D.I wont10.-May I pick a flower in the garden?-_.A.No,you neednt B.Not,please.C.No,you mustn

12、t D.No,you wontB C 11.Put on more clothes.You be feeling cold with only a shirt on.A.can B.could C.must D.would12.Must I drive to his house and pick up the children?No,.A.you shouldntB.you might not C.you neednt D.you mustntC C 13.We didnt see Tom at the meeting yesterday.He it.A.mustnt have attende

13、dB.cannot have attendedC.neednt have attendedD.would have not attended14.We play chess than bridge.Some of us dont know how to play bridge.A.had betterB.would betterC.would ratherD.had ratherB A 15.There is someone knocking at the door.it be Tom?A.Can B.Must C.Should D.Ought to16.Two year ago,my hus

14、band 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 toA D 17.-Is John coming by train?-He should,but he _ not.He likes driving his car.A.must B.can C.need D.may19.-I heard they went skiing in the mountai

15、ns last winter.-It _ true because there was little snow there.A.may not be B.wont be C.couldnt be D.mustnt beDC全国高考试题回放1.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.will2.How _ you say that you really understand the wh

16、ole story if you have covered only part of the article?A.can B.must C.need D.may3.The room is so dirty._ we clean it?Of course.A.Will B.Shall C.Would D.DoBAB4.My English-Chinese dictionary has disappeared.Who _ have taken it?A.should B.must C.could D.would5.Is John coming by train?He should,but he _

17、 not.He likes driving his car.A.must B.can C.need D.may6.I heard they went skiing in the mountains last winter.-It _ true because there was little snow there.A.may not be B.wont beC.couldt be D.mustnt beCDC10.I was really anxious about you.You _ home without a word.A.mustnt leave B.shouldnt have lef

18、tC.couldnt have left D.neednt leave11.You cant imagine that a well-behaved gentlemen _ be so rude to a lady.A.might B.need C.should D.would12.Write to me when you get home._.A.I must B.I should C.I will D.I canBCC13.Mr.Bush is on time for everything.How _it be that he was late for the opening ceremo

19、ny?A.can B.should C.may D.must14.Are you coming to Jeffs party?Im not sure.I _ go to the concert instead.A.must B.would C.should D.might15.My sister met him at the Grand Theatre yesterday afternoon,so he _ your lecture.A.couldnt have attended B.neednt have attendedC.mustnt have attended D.shouldnt h

20、ave attendedADA16.Sorry,Im late.I _ have turned off the alarm clock and gone back to sleep again.A.might B.should C.can D.will17.There was a lot of fun at yesterdays party.You _ come,but why didnt you?A.must have B.should C.need have D.ought to have18.When can I come for the photos?I need them tomor

21、row afternoon.They _ be ready by by 12:00.A.can B.should C.might D.needADB19.I stayed at a hotel while in New York.-Oh,did you?You _ with Barbara.A.could have stayed B.could stayC.would stay D.must have stayed20.The fire spread through the hotel very quickly but everyone _ get out.A.had to B.would C

22、.was able to D.could21.Jack _ yet,otherwise he would have telephoned me.A.mustnt have arrived B.shouldnt have arrivedC.cant have arrived D.neednt have arrivedA CC22.When he was there,he _ go to that coffee shop at the corner after work everyday.A.would B.should C.had better D.might23.Sir,you _ be si

23、tting in this waiting room.It is for woman and children only.A.oughtnt to B.cant C.wont D.neednt24.Its nearly seven oclock.Jack _ be here at any moment.A.must B.need C.should D.canAAC25.I told Sally how to get here,but perhaps I _ for her.A.had to write it out B.must have written it outC.should have

24、 written it out D.ought to write it out26.Michael _ be a policeman,for he is much too short.A.neednt B.cant C.should D.mayCBDiscovering useful structures Ex.1:1.Most ancient festivals would celebrate the end of cold weather 2.Sometimes celebrations would be held after hunters had caught animals.3.At

25、 that time people would starve if food was difficult to find 4.or to satisfy the ancestors,who might return either to help or to do harm.5.For the Japanese festival Obon,people should go to clean graves 6.It is now a childrens festival,when they can dress up and go 7.the children might play a trick

26、on them.8.Festivals can also be held to honour famous people.9.Harvest and Thanksgiving festivals can be very happy events.10.In European countries,people will usually decorate churches and town halls 11.Some people might win awards for their farm produce 12.At the Spring Festival in China,peoplemay give children lucky money in red paper.13.These carnivals might include parades,dancing in the streets 14.The country looks as though it might be covered with pink snow.