情态动词省名师优质课赛课获奖课件市赛课一等奖课件.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,*,本资料仅供参考，不能作为科学依据。谢谢。本资料仅供参考，不能作为科学依据。谢谢,Unit2 Grammar and Usage,Modal verbs,第1页,can/could,:,1.,can 普通表示与生俱来能力或者一个客观可能性,还能够表示请求和允许。,Learning English _ be difficult,.,can,Man,can,not live without air,.,_ I use your bike?,Can,第2页,can/could,:,2.在疑问句中，用,could,可表示请求，语气较委婉。,_I have the television on?,Yes,you _.,/No,you _,Could,He asks if he _ smoke here.,could,can/may,cant/Im afraid not,第3页,can/could,:,3.表示惊异、怀疑、不相信态度。（主要用在否定句、疑问句或惊叹句中）,Hes such a nice person that he _ commit the crime,.,cant,你怎么会如此地粗心！,How,can,you be so careless!,Can,this be true?,第4页,can/could,:,4.can never/canttoo表示“不论怎样也不过分”，“越越好”。,你过马路时候再小心也不为过。,You,cant,be too careful while crossing the road.,第5页,Attention:,can/be able to区分:,Edison always wondered why hens,could,hatch(孵)chickens while he,was not able to,.,Question:Are the two modal verbs interchangeable(交换)?If not,why?,can表示,与生俱来能力,或,一个客观可能,，而be able to愈加强调,经过后天学习和努力取得能力，,或者,在某个客观场所和背景下,，能做到事情。,第6页,Attention:,can/be able to区分:,A big fire broke out in ABC hotel yesterday.Luckily,everyone _ run out of the building,.,was able to,2.She _ speak both English and French.,can,第7页,Attention:,advisability,necessity,ought to/should,have to,must,Your mother brings you up and takes good care of you,so when she is old,you _ look after her in return.,A.can B.may C.have to D.must,第8页,Attention:,very uncertain,almost certain,might,should,must,may,could,ought to,will,1.He _ be at home,.,2.He _ be at home,for he just called me from his home 15 seconds ago.,A.may B.might C.must,A.may B.might C.must,(can),第9页,must 表示必定猜测，译为“一定”，不能用于否定句或疑问句。,This,must be,your pen.,He,must be doing,his homework now.,He,must have arrived,already.,must,第10页,must,2.表示“坚持”（惯用于固定句型：if you must do sth.假如你非得要做某事）,假如你真要走，那就悄悄离开。,If you must leave,do it quietly.,第11页,Attention:,They_ be doing the experiment in the lab.,Why？,Because the lights are still burning,.,A.could B.can,C.must D.would,第12页,may/might:,1.表示许可。表示请求、允许时，,might,比,may,语气更委婉一些。,Might/May,I use your computer?,Yes,you can.,/No,you cant/mustnt.,第13页,may/might:,2.用于祈使句中表示祝福。,3.表示推测、可能（只用于必定句，疑问句则要用can或could）。,祝你成功！,May,you succeed.,He,may,be very busy now.,May,you be happy all your life.,第14页,5.Making requests(提出要求):,Can,you help me with my training?,I dont know how to use this equipment!,will can could would,informal,formal,第15页,6.Making suggestions(提出提议),:,Shall,we do the training in the morning?,Its too hot to take exercise in the afternoon.,第16页,shall,:,1.,Shall,用于第一、第三人称疑问句中，表示说话人征求对方意见、向对方请示或提供帮助,。,1.,Shall,we begin our lesson?,2.When,shall,he be allowed to leave hospital?,3.,Shall,I carry this bag for you?,第17页,shall:,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。,You,shall,fail if you dont work harder.,He,shall,be punished according to the rule.,等我读完这本书，就会给他。,He,shall,have the book when I finish it,.,警告,威胁,允诺,第18页,7.Making offers(提供帮助):,Dont worry,dear,I,will,wash them right away.,Mom,my dirty clothes have been piled up!I dont have time,第19页,will/would:,1.表示请求、提议等，,would,比,will,委婉客气。,sentence,pattern,Would you please,Would you mind,Would rather,Would you like,第20页,will/would:,2.表示意志、愿望和决心。,I,will,never do that again.,第21页,will/would:,3.可表示经常性、习惯性、倾向性。翻译为“经常、惯于、总是”。,1).The old man _have a smoke under a big tree every afternoon after he,finished,his farm work.,would,第22页,2).门就是打不开!,The door,wont,open.,第23页,will/would:,Attention:,I,will,go to the park with you tomorrow if you,will,offer me lunch.,Question:Is this sentence correct?Why?,情态动词,表示,“意愿”,第24页,should:,1.,Should,表示劝说、提议、命令，其同义词是,ought to,；在疑问句中，通惯用,should,代替,oughtto,。,Should,I open the window?,我们应该要相互学习。,We should learn from each other.,第25页,should:,2.情态动词should用于第一人称时能够表示说话人一个谦逊、客气、委婉语气。,Rose,Sure.By the way,who is your idol?,Jack,Liu Xiang,I,should,say.,I,should,advise you not to do that again,.,第26页,3.should表示意外或诧异 常译为,“竟然，竟然”。,I cant believe such a gentleman,should,be so rude to the old.,我不敢相信这么一个绅士竟然对老人如此无礼。,should:,第27页,4.should 表示猜测时，普通指按经验或逻辑判断，翻译成“照说应该，预计，想必”,should:,-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,第28页,To be continued,第29页,三.“情态动词+have done”使用方法,（1）must have done对过去某事十分必定猜测,（2）may/might have done对过去某事可能性猜测,（3）cant/couldnt have done对过去某事否定猜测,（4）should/ought to have done过去应该做而未做,（5）shouldnt/oughtnt to have done,过去不应该做而实际上做了,（6）neednt have done 本没有必要做事实际却做了,（7）could have done,原来能够做（有能力做）事实际却未做到,第30页,Lets have a try!,第31页,Practice,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,2.There was plenty of time.She _.,A.mustnt have hurried B.couldnt have hurried,C.must not hurry D.neednt have hurried,第32页,Practice,3.I saw Mary in the library yesterday.-You_ her.She is still abroad.A.mustnt see B.cant have seen C.mustnt have seen D.couldnt see,4.Aunt Mary_the train,otherwise she would have arrived here by now.A.must have missed,B.should have missedC.had missed,D.might miss,第33页,四.可兼做行为动词情态动词：need、dare,情态动词,(+动词原形),行为动词,need,dare,1.无人称和数改变,;,2.尤其用于：,*否定句及疑问句中;,*在,if/whether,之后;,*或与,hardly,never,no one,nobody,连用;,3.常以,neednt,和,darent,形式出现;,4.dare有其过去时,dared,.,多用于必定句;,(sb.)need to do,dare to do,(sth.)need to be,done,(sth.)need doing,第34页,He,darent speak,English before such a crowd,dare he?,判断正误:,He,darent to speak,English before such a crowd,did he?,These dishes,need be cleaned,carefully.,These dishes,need to be cleaned,carefully.,These dishes,need cleaning,carefully.,第35页,五.表示否定情态动词使用方法:,部分情态动词否定式是情态动词中考点,之一。,mustnt 不准,禁止,neednt 没必要(=dont have to),cant 不能;不可能,may not 不能够;可能不,shouldnt 不应该(=ought not to),第36页,Thank you!,第37页,