人教版必修三unit1 情态动词公开课课件.ppt

Unit1GrammarandUsage,Modalverbs,情态动词的特征：,1.情态动词有一定的词义，但不完整，不能单独做谓语，它们和实义动词或者系动词连用构成谓语动词。2.无人称和数的变化，但有些情态动词，有时态的变化。3.情态动词后接动词原形4.情态动词的否定式在其后加not.,情态动词的用法：,1.can一般表示与生俱来的能力或者一种客观可能性,还可以表示请求和允许。,LearningEnglish_bedifficult.,can,Mancannotlivewithoutair.,_Iuseyourbike?,Can,can/could:,can/could:,2.在疑问句中，用could可表示请求，语气较委婉。,_Ihavethetelevisionon?Yes,you_./No,you_,Could,Heasksifhe_smokehere.,could,can/may,cant/Imafraidnot,can/could:,3.表示惊异、怀疑、不相信的态度。（主要用在否定句、疑问句或惊叹句中）,Hessuchanicepersonthathe_committhecrime!,cant,你怎么会如此地粗心！,Howcanyoubesocareless!,Canthisbetrue?,can/could:,4.cannever/canttoo表示“无论怎样也不过分”，“越越好”。,你过马路的时候再小心也不为过。,Youcantbetoocarefulwhilecrossingtheroad.,1.对于你为我们所做的一切，我们怎么感激你都不过分。Wecantthankyoutoomuchforwhatyouvedoneforus.2.过马路时怎么小心都不过分。Youcanneverbetoocarefultocrosstheroad.3.这项工作你做得越出色越好Youcanneverdotheworktoowell.。,Attention:,can/beableto区别:,Edisonalwayswonderedwhyhenscouldhatch(孵)chickenswhilehewasnotableto.,Question:Arethetwomodalverbsinterchangeable(互换)?Ifnot,why?,can表示与生俱来的能力或一种客观可能，而beableto更加强调通过后天的学习和努力获得的能力，或者在某个客观的场合和背景下，能做到的事情。,Attention:,can/beableto区别:,AbigfirebrokeoutinABChotelyesterday.Luckily,everyone_runoutofthebuilding.,wasableto,2.She_speakbothEnglishandFrench.,can,写出下面can/could的用法1.IcanspeakEnglishwhilehecant._2.-Canthenewsbetrue?_-Itcantbetrue.3.Youcanusemydictionary._4.Itcouldbeveryinterestingtogooutforadrive._.,能力,可能性,请求,允许,客观可能性,2.选词填空:can,beableto1).He_giveyousomeadviceonhowtolearnEnglish.2).Thebabywill_walkinafewmonths.3).Atlast,they_escapefromthefire.,can,beableto,wereableto,1.Whatsortofhousedoyouwanttohave?Somethingbig?-Well,it_bebig-thatsnotimportant。A.mustntB.needntC.cantD.wont,2.You_behungryalreadyyouhadlunchonlytwohoursago!A.wouldntB.cantC.mustntD.neednt,C,B,2.may/might:,1.表示许可。表示请求、允许时，might比may的语气更委婉一些。,Might/MayIuseyourcomputer?Yes,youcan./No,youcant/mustnt.,may/might:,2.用于祈使句中表示祝愿。,3.表示推测、可能（只用于肯定句，疑问句则要用can或could）。,祝你成功！,Mayyousucceed.,Hemaybeverybusynow.,Mayyoubehappyallyourlife.,1.MightIwatchTVaftersupper?Yes,you_.A.mayB.mustC.mightD.can,2.Somepeoplewhodontliketotalkmucharenotnecessarilyshy；they_justbequietpeople2009山东卷AmustBMayCshouldDwould,A,B,3.will/would:,1.表示请求、建议等，would比will委婉客气。,sentencepattern,Wouldyouplease,Wouldyoumind,Wouldrather,Wouldyoulike,will/would:,2.表示意志、愿望和决心。,Iwillneverdothatagain.,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).Theoldman_haveasmokeunderabigtreeeveryafternoonafterhefinishedhisfarmwork.,would,2).门就是打不开!,Thedoorwontopen.,will/would:,Attention:,Iwillgototheparkwithyoutomorrowifyouwilloffermelunch.,Question:Isthissentencecorrect?Why?,情态动词,表示“意愿”,Will/Wouldyoudo?(表请求would更委婉)表意志，愿望，决心would表过去反复发生得动作或某种倾向“总是,总要”usedto表过去常常（现在已没有这种习惯）“过去常常”usedto可于状态动词连用would不可以eg.Heusedtobeaquietboy.()Hewouldbeaquietboy.(),will/would,选词填空：He_takeawalkneartheforestintheevening.He_takeawalkneartheforestintheeveningbutnowhegivesup.(江苏高考）Dayslater,mybrothercalledtosayhewasallright,but_saywherehewas.mustntB.shouldntC.wouldntD.mightnt,would,usedto,c,4.shall:,1.Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见、向对方请示或提供帮助。,1.Shallwebeginourlesson?2.Whenshallhebeallowedtoleavehospital?3.ShallIcarrythisbagforyou?,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。,Youshallfailifyoudontworkharder.Heshallbepunishedaccordingtotherule.等我读完这本书，就会给他的。,HeshallhavethebookwhenIfinishit.,警告,威胁,允诺,5.should,1.Should表示劝告、建议、命令，其同义词是oughtto；在疑问句中，通常用should代替oughtto。,ShouldIopenthewindow?,我们应当要相互学习。,Weshouldlearnfromeachother.,should:,2.情态动词should用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。,RoseSure.Bytheway,whoisyouridol?JackLiuXiang,Ishouldsay.,Ishouldadviseyounottodothatagain.,3.should表示意外或惊讶常译为“居然，竟然”。Icantbelievesuchagentlemanshouldbesorudetotheold.我不敢相信这样一个绅士居然对老人如此无礼。,should:,4.should表示猜测时，一般指按经验或逻辑判断，翻译成“照说应该，估计，想必”,should:,-WhencanIcomeforthephotos?Ineedthemtomorrowafternoon.-They_bereadyby12:00.A.canB.shouldC.mightD.need,翻译句子1）Youshallhavethatbooktomorrow2)Shallthosegoodsbesenttoyuatonce?3)孩子应该被告之真相,Childrenshouldbetoldthetruth.,6.must和haveto,1.Must用于一般问句中,肯定回答用must否定式用neednt或donthaveto，做“不必”,mustnt表示“禁止，不允许”,MustIfinishallassignmentsatatime?,Yes,youmust.No,youneednt.,Youmustntgetdownwhilethecarisstillmoving.,must表示肯定的猜测，译为“一定”，不能用于否定句或疑问句。Thismustbeyourpen.Hemustbedoinghishomeworknow.Hemusthavearrivedalready.,Must:表示说话人的态度,常常译为:偏要,常用于固定句型：ifyoumustdosth.如果你非得要做某事）,如果你真的要走，那就悄悄离开。,Ifyoumustleave,doitquietly.,Attention:,They_bedoingtheexperimentinthelab.Why？Becausethelightsarestillburning.,A.couldB.canC.mustD.would,完成句子1.我们必须今天交作业吗？-_.是的。必须交。_.走了这么长的路，她一定是累了。_.,Mustwehandinourexercisetoday?,Yes,youmust.,Youmustbetiredaftersuchalingwalk.,.阅读下面句子，按照句子结构的语法性和意义连贯的要求，在空格处填入一个最恰当的情态动词1Justbepatient，you_expecttheworldtochangesosoon.答案：cant,2Ihaventgotthereferencebookyet，butIllhaveatestonthesubjectnextmonth.Dontworry.You_haveitbyFriday.答案：shall3It_bequitewindyinthenorthofChina，especiallyinspring.答案：can4Jackdescribedhisfather，who_abraveboymanyyearsago，asastrongwilledman.答案：musthavebeen,5MayIsmokehere?Ifyou_，chooseaseatinthesmokingsection.答案：must6ImafraidMr.Harding_seeyounow.Hesbusy.答案：cant7You_buyagift，butyoucanifyouwantto.答案：donthaveto8CouldIhaveawordwithyou，mum?Ohdear，ifyou_.答案：must,9Goodmorning，IvegotanappointmentwithMissSmithinthePersonnelDepartment.Ah，goodmorning.You_beMrs.Peter.答案：must10There_beanydifficultyinpassingtheroadtestsinceyouhavepractisedalotinthedrivingschool.答案：shouldnt11Icantleave.ShetoldmethatI_stayhereuntilshecomesback.答案：must,12Why_Ihelphim？Hesneverdoneanythingforme.答案：should13Jacktookthe830bustoGuangzhouthismorning.Really？He_820Express.Itismuchmorecomfortableandfastertotravelbytrain.答案：couldhavetaken,14_IinviteJacktotheparty?Yes，itllbeniceifyou_.答案：Shall；will15How_Ihelpthemtounderstandwhentheywontlistentome?答案：can,.完成句子1You_(本应到达)earlier.(arrive)答案：shouldhavearrived2She_(一定擦了)thetable，forthetableisveryclean.(clean)答案：musthavecleaned,3_(你能屏住呼吸)for5minutes？(breath)答案：Canyouholdyourbreath4Theguidesuggestedthatwe_(出发)tonight.(set)答案：shouldsetoff/out5You_(应该原谅)her，foritisnotherfault.(forgive)答案：shouldforgive6We_(一定不要嘲笑)theoldpeople.(laugh)答案：mustntlaughat,7Oil_(漂浮)onwater.(float)答案：willfloat8She_(不可能来了)，forherbossaskedhertofinishalotofworktoday.(turn)答案：cantturnup9It_(可能是种习俗)(custom)答案：maybeacustom10She_(过去常开别人玩笑)others.(trick)答案：usedtoplayatrickon,11(2011年高考北京卷改编)IdontreallylikeJames.Whydidyouinvitehim?Dontworry.He_(可能来不了)Hesaidhewasntcertainwhathisplanswere.答案：mightnotcome12(2011年高考福建卷改编)ShallIinformhimofthechangeoftheschedulerightnow?Iamafraidyou_(必须)，incasehecomeslateforthemeeting.答案：must,13(2011年高考浙江卷改编)Howsyournewbabysitter?We_(不可能找到)forabetterone.Allourkidslovehersomuch.(ask)答案：couldntask14(2011年高考上海卷改编)I_(不必担心)aboutmyweekend.Ialwayshavemyplansreadybeforeitcomes.答案：needntworry15(2011年高考辽宁卷改编)Ifyou_(一定要走)，atleastwaituntilthestormisover.答案：mustgo,.选用合适的情态动词翻译下列句子1马克没必要那么匆忙。以最快的速度开车，他早到了半个小时。_答案：Markneednthavehurried.Afterdrivingattopspeed，hearrivedhalfanhourearly.,2她的自行车还在这儿，她不可能离开学校。_答案：Shecanthaveleftschool，forherbikei