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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,ks5u精品课件,*,can and could may and might,will and would shall and should,must and cant,情态动词用法,ks5u精品课件,第1页,He,can,take part in the Olympics.,He,may,win the golden medal.,To win it,he,must,run faster.,ks5u精品课件,第2页,He,can,He,may/might,He,must,ks5u精品课件,第3页,Can Could,ks5u精品课件,第4页,So he,can,carry heavy books,.,He,couldnt,open the door by himself.,Could,you open the door,please?,ability,ability,request,ks5u精品课件,第5页,1),表示能力（,ability,），指有能力做某事，意为“能够”。比如：,注意：表示现在，未来“能够”可用be able to 替换。表示过去“能够”并成功了只能用was/were able to,不能用,could,。例如,My grandma is over eighty,but she,can/is able,to,read without glasses.,We,can/will be able to,talk about the matter,later.,I talked with her for a long time,and at last,I was able to,make her believe me.(,不能用,could,),can 和could,：,ks5u精品课件,第6页,2),表示请求（,request,）或（,permission,）。意为“可否”、“能够”。Could 比can 更有礼貌，在此不是can过去式。,Can,you wait a moment please?,Liz,can,you do me a favor?,Excuse me,could,you tell me the way to,the station?,I wonder if you,could,help me.(,request,),ks5u精品课件,第7页,-,Could,I use your phone?,-Yes,of course.You,can,.,Do you think I,could,borrow your bike?,(,permission,),3)表示可能性（,possibility,）,a.can 表示泛指“可能”，并非说话者主观认为可能性，即并非说话者主观猜测。,Accident,can,happen to any drunken driver.,ks5u精品课件,第8页,b.表示说话者主观猜测，只能用是否定句或疑问句中。比如：,It,cant,be my father.He is now in England.,-,Can,it rain tomorrow?,-No,it,cant,.,ks5u精品课件,第9页,may might,ks5u精品课件,第10页,He,may,be in his office.=(perhaps he is in his office.),He,might,be having lunch.=(perhaps he is having lunch.),ks5u精品课件,第11页,may 和might,：,1）表示可能性（,possibility,）,用于对现在，过去或未来推测，暗示不确定。might 不是may过去式，它所表示可能性比may 小，含较多怀疑。,He,may,be very busy now.(可能性较大),He,might,be very busy now.(,可能性较小,),ks5u精品课件,第12页,2）表示许可（,permission,），表示允许他人做某事，也可征求对方许可。,He,may,go now.,We,may,keep the book for two weeks.,3）用于祈使句，表示祝福。,May,you succeed!,May,you have a nice trip!,ks5u精品课件,第13页,1.They(can/might)_be away for the weekend but Im not sure.,2.You(may/might)_leave now if you wish.,3.(could/may)_you open the window a bit,please?,4.He(can/could)_be from America,judging by his accent.,5.(may/can)_you swim?,6.Listen,please.You(may not/might not)_ speak during this exam.,May,might,can,could,might,may,could,could,Can,may,not,表示猜测,表示许可,表示请求,表示猜测,表示能力,表示不允许,ks5u精品课件,第14页,7.They(can not/may not)_ still be out,the light is on in the house.,8.You(couldnt/might not)_ smoke on the bus.,9.With luck,tomorrow(can/could)_be a cooler day.,10.You(can/might)_ be right,but Im going back to check it.,May,might,can,could,can,not,couldnt,could,might,表示猜测(不可能),表示许可,表示猜测,表示猜测,ks5u精品课件,第15页,will和would,：,1）表示意愿,表示愿意做或主动提出做，如意志,愿望或决心That bag looks heavy,I,ll,help you with it.(offering to do sth),-You know that book I lent you.Can I have it back if youve finished with it?,-Of course.I,ll,give it to you this afternoon.(agreement),Thanks for lending me the money,I,ll,pay you back on Friday.(promise),ks5u精品课件,第16页,2）表示习惯(,habit,custom,),This old man is strange.He,will,sit for hours,without saying anything.,We,would,sit around Grandpa after supper,listening to his stories.,3）表示请求（,request,）,用于第二人称,would 比will 更委婉。比如：,Will,you come this way,please?,Would,you open the window?,ks5u精品课件,第17页,shall和should,：,1）shall 使用方法,a.shall 在疑问句中用于第一，第三人称，表示征求对方意见。,Shall,we put off the sports meeting until next month?,Shall,Tom go there with me tomorrow?,ks5u精品课件,第18页,b.,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。,You,shall,fail if you dont work harder.,（警告）,He,shall,have the book when I finish,reading it.(允诺),He,shall,be punished.(,威胁,),ks5u精品课件,第19页,a.should 表示劝说、提议、命令。,You,should,go to class right away.,b.should 表示期待，用于表示合理推断（,prediction,，意为“应该”），或显著结果（意为“可能”）且所期待事几乎是事实。,It is three oclock,the football game,should,begin now.,Mary took dancing lessons for,years,she,should,be an excellent dancer.,2)should 使用方法,ks5u精品课件,第20页,1.We _ smoke here,because the worker is carrying some petrol.,2.It is dangerous.You _ leave the room immediately.,3.He _ go hiking with friends at weekends when young.,4.Write to me when you get home.,-I _.,5.-Need I hand in my exercise book at once?,-Yes,you_.,6.You have been working all day.You _ be very tired.,7.It is a long time since we met last time.You _ come and see us more often.,8.Why dont you try on this dress?It _ look nice on you.,will,would,shall,should,must:,mustnt,should,would,will,must,must,should,will,表示禁止,不许可,表示提议,命令,表示过去重复,表示意愿,表示必须,表示必定猜测,表示提议,表示将会,一定会,ks5u精品课件,第21页,must,and,cant,ks5u精品课件,第22页,must和cant,：,must 用来表示“命令”、“推测”等含义。,1）表示要求、指令,表示要求、指令时主要指客观上法律、条文要求，经常翻译为“应该、必须”之类意思。mustnt表示禁止,You,must,have a passport if you want to go abroad.,ks5u精品课件,第23页,2)表示主观命令、禁止,表示主观命令、禁止时，主要指说话者主观命令或强烈劝说。,You can go out with your friend but you,must,come back before 11 at night.,-,Must,I hand in the exercise today?,-No,you neednt.。,ks5u精品课件,第24页,3）表示猜测，语气非常必定，近乎确定意味，普通用于必定句，意为必定。其否定为cant，意为不可能.。,You,must,be ill.I can see it from your face.,He,cant,be at home.I saw him in the classroom just now.,ks5u精品课件,第25页,must和 haveto,1.must用于普通问句中,必定回答用must否定式用neednt或dont have to，做“无须”,mustnt表示“禁止，不允许”,Must,Ifinishallassignmentsatatime?,Yes,you,must,.,No,you,neednt,.,ks5u精品课件,第26页,I dont like this TV set.We,must,buy a new one.There was no more bus.They,had to,walk home.,2.表示“必须”这个意思时，must和haveto稍有区分。must着重说明主观看法，haveto强调客观需要。另外，haveto能用于更多时态。,ks5u精品课件,第27页,Not sure,Very sure,He might be in the classroom.,He may be in the classroom.,He could be in the classroom.,He should be in the classroom.,He must be in the classroom.,ks5u精品课件,第28页,1.Find sentences with models in the passage:,Other celebrations were held when hunters,could,catch animals.,They lit fires and made music because they thought these festivals,would,bring a year of plenty.,or satisfy and please the ancestors,who,could,return either to help or to do harm.,In Japan the festival is called Obon,when people,should,go to clean the graves and light incense in memory of their ancestors.,On this important feast day,people,might,eat food in the shape of skulls,and cakes with“bones”on them.,It is now a childrens festival,when they,can,go to their neighbours homes and ask for sweets.,ability,possibility,possibility,the past habit,possibility,possibility,ks5u精品课件,第29页,7.If they are not given anything,the children,might,play a trick.,8.Some people,might,win awards for their animals,flowers,fruit and vegetables,9.At the Spring Festival in China,peopleand,may,give children lucky money in red paper.,10.They,might,include parades,dancing in the streets day and night.,possibility,possibility,possibility,possibility,ks5u精品课件,第30页,2.Complete the following sentences with proper modal verbs.,1)Youve been working all day.You _ be very tired.,2)(The door bell rings)I wonder who that is,it_ be Lisa.Shes still in the library at this time.,3)It is a long time since we met last time.You _ come and see us more often.,4)I havent decided where Im going for my holidays.I _ go to Australia.,5)My fathers birthday is coming.What _ I get him?,6)Why dont you try on this dress?It_ look nice on you.,7)“Who was the man talking with your teacher?”“Im not sure.It _ be her brother.,8)I dont know when the guests _ be here.They _ arrive at any time.,must,cant,should,may,shall,will,might,will,could,ks5u精品课件,第31页,2.A:_ Xiao Feng find the origin of Easter from that book?,B:No,he _.,1.A:_ you like to go to a special event with us on Saturday?,B:Yes,I _ _.,Would,d like to go with you on,Saturday,Could,couldnt find it,3.Finish the dialogue with modal verbs,ks5u精品课件,第32页,3.A:_ I go with my friend to the harvest festival?,B:Yes,you _ _.,4.A:If I want to be a doctor _ I study science?,B:Yes,you _.,should,study science,May,may,go(with your,should,friends,),ks5u精品课件,第33页,5.A:He is very handsome._ he play the role of the prince?,B:No,he _ _.,cant play the role of the,Can,prince,ks5u精品课件,第34页,Make a dialogue using modal verbs according to the given situation.,You have to go to buy food and gifts for Spring Festival.In pairs,one as the shop keeper and the other as the customer,offer and request the items you need.Use these expressions to help you.,Would,you like?,Could,I have?,Might,I suggest?,May,I see?,You,should,try?,Could,we look at?,Can,you see?We,might,take?,ks5u精品课件,第35页,Sample dialogue:,In the supermarket a customer is talking with the salesman.,A:Hello,I need to buy some things for the Spring Festival.,B:,May,I suggest these gifts for the children?They are very popular.,A:They are pretty,but,could,I have a look at the red paper envelopes on the shelf?,B:Sure,would,you like these ones?They are less expensive.,A:Thats fine.Ill take twelve of them.,May,I see what your pork is like?I need to make dumplings.,B:Of course,its over there.You,should,try some of the cabbage that just arrived.Its very fresh.,A:Ok,could,I have three cabbages and a kilo of pork?I also need some flour.,B:,Can,you see the flour down there?Please take what you need.Thanks for coming in,and have a good holiday.,ks5u精品课件,第36页,practice,.Choose one of the following situations to create a short dialogue using modal verbs.,Situation A:,In a library.Ask the librarian if he can help to find a book relating to some specific topics,whether they can be renewed or not,and how to do if the books are lost.(“Could you please find?”“May I?”“You mustnt”),Situation B:,A doctor gives a patient some advice.(“You should”),Situation C:,In a park by a lake.Discuss that one should not destroy the environment.(“You should”,“You shouldnt”,“You mustnt”),Situation D:,Requesting an appointment.(“Will you?”“Shall I?”),ks5u精品课件,第37页,1.-There were already five people in the car but they managed to take me as well.,-It _a comfortable journey.(),A.cant be B.mustnt have been,C.shouldnt be D.couldnt have been,D,2.The fire spread through the hotel very quickly but everyone _ get out.(),A.had to B.would,C.could D.was able to,D,EXERCISES,ks5u精品课件,第38页,3.Peter _ come with us tonight,but he isnt very sure.,must B.can C.may D.will,C,4.-Could I call you by your first name?-Yes,you_.,A.will B.could C.may D.might,C,5.Sorry,I m late.I _ have turned off the alarm clock and gone back to sleep again.,might B.should C.can D.will,A,ks5u精品课件,第39页,6.-Excuse me,but I want to use your computer to type a report.,-You _ have my computer if you dont take care of it.,A.shant B.might not C.neednt D.shouldnt,A,7.-When can I come for the photos?I need them tomorrow afternoon.,-They _be ready by 12:00.,A.can B.should C.might D.need,B,8.With so much work on hand,you _to see the game last night.,A.mustnt go B.could have gone,C.shouldnt go D.shouldnt have gone,D,ks5u精品课件,第40页,9.Johnny,you _play with the knife,you _hurt yourself.(),A.wont;cant B.mustnt;may,C.shouldnt;must D.cant;wouldnt,B,10.I missed the bus,so I _ go home on foot.,A.must B.may C.can D.had to,D,ks5u精品课件,第41页,表示“能力”,表示“推测”,表示“许可；要求”,表示“提议”和“义务”,can,must,can,must,could,should,could,have to,could,may,need,may,might,Shall I?,might,must,cant,shouldnt,maynt,mustnt,mightnt,Would you like?,Can?,Will you please?,ks5u精品课件,第42页,
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