高一英语英语必修3Unit1语法课件.ppt

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,*,*,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,*,*,*,Modal Verb I,Unit 1,He,must have gone,to Beijing.,2.,The door was locked.She,couldnt,have been,at home.,3.They,may be,still waiting for us.,Translate the following sentences into,Chinese.Pay attention to the mood.,他一定已经去北京了。,门是锁着的，所以她不可能在家。,他们可能还在等我们呢。,10/15/2026,2,4.He,might have read,about the news in,the newspaper.,5.You,should have told,him a week ago.,6.,Can,you give me some suggestions?,7.They wanted to know when you,would,go,to the park.,他可能已经从报纸上知道这个消息了。,你本来应该在一周前告诉他的。,你能给我一些建议吗？,他们想知道你们什么时候去公园。,10/15/2026,3,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、,必须、应当,”,等。,什么是情态动词？,(Modal Verbs),10/15/2026,4,Words like,can,will,may,must,and a,few others are called,modals,.Modal,verbs help other verbs express a meaning,or an idea.Some common uses of the,modals are these:,Ability,:,1 He,can,speak English now.,2 He,couldnt,speak English a,year ago.,3,I,m not able to,come to the game,on Friday.,10/15/2026,5,Permission,:,All passengers,may,now board.,We,can,board now.,Obligation,:,You,must,fasten your seat belts.,(strong),You,should,pay attention.,(weak),You,ought to,pay attention.,Possibility,:1 It,may,rain.,2 How,could,I forget an,important thing like that?,3 He,cant/couldnt,have known,the result.,10/15/2026,6,Meanings similar to those of the,modals can often be conveyed by real,verb forms:,He has to.=,must,is able tospeak English=,can,is allowed to.=,may,is supposed to=,should,10/15/2026,7,情态,动词的语法特,征,1.,情态动词不能单独做谓语，除,ought,和,have,外，后面只能接不带,to,的不定式。,2.,情态动词没有人称，数的变化，但有,些情态动词，如,can,will,也有一般式,和过去式的变化。,10/15/2026,8,只作情态动词的,can/could,may/might,ought to,must,可情态可实义的,need,dare/dared,可情态可助动词的,shall/should,will/would,相当于情态动词的,have to,used to,3.,情态动词的“时态”形式并不是时间区别的主要标志，不少情况下，情态动词的现在式形式和过去式形式都可用来表示现在时间、过去时间和将来时间。,10/15/2026,9,1,.,can,的主要用法是：,A.,表示体力或脑力的能力,：,eg,.The girl,can,dance very well.,B.,表示说话者的推测,事物的可能性,:,eg,.,Can,the news be true?,C.,在口语中,can,可以表示请求或允许,：,eg,.,Can,I sit here?,can,和,could,10/15/2026,10,2,.,could,的主要用法是：,A.could,是,can,的过去式,表示与过去 有关的能力和推测,:,eg,.We all knew that the young man,couldnt,be a doctor.,B.could,可以代替,can,表示请求,但语气较,can,客气、委婉,:,10/15/2026,11,eg,.,Could,you lend me your dictionary?,Could,I use your bike?,3,.,can,和,could,接动词的完成形式，表示可能已经做某事。,can,用在否定和疑问句中,表示不相信、怀疑等态度。,eg,.They,cant have gone,out because,the light is still on.,10/15/2026,12,may,常用来表示：,A.,表示请求、允许,：,比,can,较为正式,:,eg,.,May,I come in?,You,may,go now.,B.,表示说话人的猜测,:“,也许”“可能”,:,通常只用于肯定句和否定句中。,may,和,might,10/15/2026,13,eg,.-I believe the man is from England.,-But I,may,be wrong.,The guest,may,arrive this afternoon.,在肯定句中，,may,的可能性比,can,高，,may,表示现实的可能性，,can,表示理论上的可能性。如：,10/15/2026,14,The road,may,be blocked.,这条路可能不通了。,The road,can,be blocked.,这条路可能会是不通的。,在疑问句中，表示可能性用,can,。,如：,Where,can,he be?,他会在哪呢？,10/15/2026,15,C.,表示祝愿,;,但语气较正式,:,eg,.,May,you succeed!,May,you have a good journey!,might,的用法有,:,多在间接引语中表示过去的可能和允许。如,:,She said that he,might,take her bike.,她说他可以拿她的自行车去用。,10/15/2026,16,除了在间接引语中以外，,might,一般不表示过去的可能或者许可。如要表示过去的可能可以用,could,表示过去的许可可以用,was(were)allowed to,或者,had permission to,。,表示现在的可能，其可能性要比,may,小。如：,10/15/2026,17,H,e,might,go home tomorrow.,说不定他明天会回家。,表示现在的许可，语气比,may,较委婉，,一般用于疑问句（包括间接疑问句），,不可用于肯定句或者否定句。,如,:,Might,I have a word with you?,我可以和你说句话吗？,10/15/2026,18,will,和,would,1.will,是助动词,还,是情态动词？,will,用于构成将来时是助动词。,用于表示“意志”“决心”“请求”是情态动词。,would,亦同理。,eg,.I,will,tell you something important.,我要告诉你一件重要的事情。,（助动词）,10/15/2026,19,Will,you tell her that Im here?,请您告诉她说我在这儿，好吗？,（情态动词）,2.,在疑问句中用于第二人称，提出请求或询问。,eg,:If you want help,let me know,will,you?,如果你需要帮助,让我知道,好吗,?,10/15/2026,20,Will,you type this,please?,请把这个打,一下,，好吗？,Wont,you sit down?,请坐下，好吗？,3.would,比,will,客气委婉。,eg,:,Would,you help us,please?,请您帮助我们，好吗？,（表请求）,10/15/2026,21,Id,go there with you.,我要和你一块到那儿去。,Your t,eacher,wouldnt,allow it.,老师不会允许这件事。,（表意愿）,（表许可）,10/15/2026,22,shall,和,should,1.shall,用于构成将来时是助动词。,shall,用于征求对方的意见，,表示“决心”是情态动词。,eg,:Perhaps I,shall,pay a visit to,England this winter.,可能今年冬天我会去英国观光。,（构成一般将来时,助动词）,10/15/2026,23,Shall,we go by train,Mom?,妈妈，我们乘火车去好吗？,（用于征求对方的意见，情态动词）,I,shall,go at once.,我必须立即去。,（表“决心”，情态动词）,10/15/2026,24,2.should,表示义务、建议、劝告,，,意为“应该”。“,should+have+,过去分词”,表示本应该在过去做但没有做。,eg,:You,should,keep your promise.,你应该遵守诺言。,She,should,have passed the exam.,她应该通过考试的。,10/15/2026,25,must,的主要用法,1.,表示必然性。,eg,:We,must,all die.,人总要死的。,2.,表示强制或者义务。,eg,:You,must,get up early.,你必须早起来。,10/15/2026,26,注意,:must not,的意思是不许可，不应该或者禁止。,如：,We,mustnt,waste our time.-May I take this magazine out?-No,you,mustnt.,must,用于一般疑问句的时候，肯定回答应该用,yes,please,或者,Im afraid so,其否定回答应该用,neednt,或者,dont have to,。,10/15/2026,27,表示推测，语气非常肯定，近乎确定的,意味，一般用在肯定句。,It,must,be eleven oclock now.,He,must,be crazy.,在表示推测的否定或者疑问句中必须,用,can/could,不可以用,must,。,If Mary didnt leave here until five,oclock,she,cant,be home yet.,如果玛丽五点才离开这儿,，她,此时一定,还未到家。,10/15/2026,28,-_ I go out to play,mum?,-No,you_.You should do your,homework first.,A.Might;wouldnt,B.May;had better not,C.Must;mustnt,D.Need;mustnt,Exercise,10/15/2026,29,2.-Where is Emma?,-I cant say for sure where she is,but she_ be out shopping.,A.can,B.should,C.must,D.may,10/15/2026,30,3.The room is in a terrible mess;it,_ cleaned.,A.cant have been,B.couldnt be,C.may have been,D.would be,10/15/2026,31,4.There _ be any difficulty about,passing the road test since you have,practised,a lot in the driving school.,A.mustnt,B.shant,C.shouldnt,D.neednt,10/15/2026,32,1 Children under 12 years of age in that,country _ be under adult,supervision when in a public library.,(2004,上海）,A.must B.may,C.can D.need,直击高考,10/15/2026,33,2 Whats the name,？,Khulaifi,._ I spell that for,you,？（,2006,北京）,A.Might,B.Would,C.Can,D.Shall,10/15/2026,34,3,Some aspects of a pilots job_ be,boring,and pilots often _ work at inconvenient hours.,（,2006,湖南）,A.can,；,have to,B.may,；,can,C.have to;may,D.ought to;must,10/15/2026,35,4 The weather turned out to be fine,yesterday.I _ the trouble to carry,my umbrella with me.(2006,江西）,A should have taken,B could have taken,C neednt have taken,D mustnt have taken,10/15/2026,36,5 Hows your tour around the North,Lake?Is it beautiful?,It _ be,but it is now heavily,polluted.,（,2007,全国,I,）,A.will B.would,C.should D.must,10/15/2026,37,6,I told your friend how to get to the hotel,but perhaps I,have driven her there.,（,2007,陕西）,A.could B.must,C.night D.should,10/15/2026,38,根据汉语完成句子。,A:_(,我可以跟朋友,去,)to the harvest festival?,B:Yes,you may.,A:If I want to be a doctor,_,_(,我应该学理科吗,)?,B:I think so.,May I go with friends,should I study,science,10/15/2026,39,3.I dont know where she is,she _,_(,可能在武汉,).,4.At this moment,our teacher,_(,想必在批改,)our,exam papers.,5.The road is wet.It _,(,肯定下雨了,)last night.,6.Your mother _,_(,一定一直在找你,).,may,must be marking,must have rained,must have been looking,be in,Wuhan,for you,10/15/2026,40,7.Philip _,_(,可能在车,祸中受了重伤,).,8.-Linda has gone to work,but her bicycle,is still here.,-She _(,可能上班,),by bus.,9.Mike _(,一定还没有找回,),his car,for he came to work by bus this,morning.,may(might)have been hurt,may(might)have gone,cant have found,seriously in the car accident,10/15/2026,41,Thank you.,10/15/2026,42,