外研版高中英语必修三(精)

外研版高中英语必修三Module4SandstormsinAsia语法课（2）By王小林，来自武清区河西务中学Part1教学设计Teachinggoals教学目标tobedonetobedoingtohavebeendonebut＋todo1.tobedonetobedoingtohavebeendonebut＋todoGrammar1.Infinitive:“to＋V”Grammar2.but+infinitivebut＋do2．Abilitygoals能力目标Makesurethelearnersarefamiliarwiththeformofthesetwogrammarsandmasterthefunctionofthem.Learningabilitygoal学能目标HelpthelearnersfindoutandsummarizethefunctionofInfinitiveusingDeductive＆Inductivemethods.TeachingImportantanddifficultpoints教学重难点EnablethelearnerstounderstandandmasterthefunctionofInfinitive,especiallyitsvariationsandhowtohelpstudentsusethemaccurately.Teachingmethods教学方法Task—basedapproachDeductive＆inductivemethodTeachingAids教具AcomputerandprojectorSuchrealsubjectsasbooks/chalketc.Teachingprocedures教学步骤StepI.GreetingsGreetthestudentsasusualStepH.Explanationandpractice(lead-in)T：Class,correctthemistakesinthesesentencesonthescreen.(Teachershowsthefollowingsentencesonthescreen)Example:Peoplecouldn'ttobreathewhentheywentoutside.Thereisstillalottohavebedoneabouttraffic.weshouldtorecyclerubbish,notburnit.Weneeddevelopbetterpublictransportincities.]ThewindisstrongenoughblowthesandacrossthePacificOcean.Somecountriesaretryingsavetheforests.S1:…S2:…S3:…S4:…•••Suggestedanswers:Thereisstillalottobedoneabouttraffic.weshouldrecyclerubbish,notburnit・Weneedtodevelopbetterpublishtransportincities.ThewindisstrongenoughtoblowthesandacrossthePacificOcean.Somecountriesaretryingtosavetheforest.T:Class,seenfromthesentencesabove,whatdoestheunderlinedpartsreferto?Ss：TheInfinitive.T:WhatisthestructureoftheInfinitive?(Askstudentstolookatthescreenandthinkitover)Ss:ThebasicstructureoftheInfinitiveis"to+v"(begintostudytheGrammarpart)T:Good,class,lookatthescreenandthinkaboutthesentences—whatarethefunctionsoftheInfinitiveToseeistobelieve.Yourjobistowashdishes.Heaskedhisstudentstolistentohimcarefullyinclass.Itiswisetogiveupsomething.

S1:…S2:…S3:…S4:…Suggestedanswers:TheInfinitive(to+v)—subject(主语)TheInfinitive(to+v)—predicative(表语)TheInfinitive(to+v)—objectcomplement(宾语补足语)TheInfinitive(to+v)—subject(主语)T:Quiteright.(Teachershowsthefollowingonthescreen){a.subjectb・Predicativec・objectcomplement㈠Practice・(FillintheblankswiththecorrectformoftheVerbsinthebracket.)It'sright(give)upsmoking・I'dliketheproblem(discuss)thenextmeeting・Shewilltellyouwhichbus(take)・Ioftenhearhim(sing)thesong・Suggestedanswers:togive②tobediscussed③totake④singT:Infact,therearesomeothermainusagesoftheInfinitiinveadditiontotheusageabove・d・TheInfinitive—Object(宾语)E.g.①HewantedtogoHepromisedtogivemeachance.Ifinditinterestingtoworkwithhim.Ithasnochoicebuttoliedownandsleep.Theydidn'topentheirmouthsexcepttocomplaine.TheInfinitive—Attributive(定语)E.g.①Heisamantodependon.“inorderto/soasto"E.g.“inorderto/soasto"E.g.①Shegotoffthetraininordertoseeafriend.Shegotoffthetrainsoastoseeafriend.inordertoseeafriend,shegotoffthetraininBeijing.rAdverbialofpurpose(目的状语)E.g.shegotoffthetraintoseeafriend.f.TheInfinitive—VAdverbialofresult(结果状语)迟.g・Hehurriedtotheschooltofindnobodythere.㈡Practice.(FillintheblankswiththecorrectformoftheVerbsinthebracket.)Theyhoped(find)newresourcesformankind.Thereisnothing(worry)about.Themeeting(hold)tomorrowisveryimportant.ThequestionisdifficuIt(answer).Icamehere(see)you.Wewereveryexcited(hear)thenews.Suggestedanswers:①tofind②toworry③tobeheld④toanswer⑤tosee⑥tohearStepHI.Consolidation一.DosomeExercises:㈠Puttheverbsinbracketsintothecorrectform.Itisfrightening(walk)intheroadinasandstorm.IhopeIreachhomesoon.Expertshope(learn)moreaboutthemovementofsandstorms.(see)arealsandstormwasveryfrightening.Thewindisstrongenough(move)sanddunes.Wewereadvised(notgo)outside.S1:…S2:…S3:…S4:…♦••Suggestedanswers:①towalk②tolearn③Tosee④tomove⑤nottogoHeseemstoknoweverythingintheworld.Heseemstobelookingforsomethingoverthere.HeseemstohavebeentoEgypt.Hehassomephotoswithpyramidsbehindhimself.Thebridgeissaidtobebuiltnextyear.Tohavebeencaughtinasandstormwasaterribleexperience.老师可以指导上述句子说：Inthefirstsentence,wehaveverbs,“seems"and“to"nowWhichverbhappensfirstordotheyhappenatthesametime?形式时间概念语态todo/do与主动词冋时发生或发生在主动词之后主动tobedoing与主动词冋时发生，动作在进仃主动tohavedong发生在主动词之前主动tobedong与主动词冋时发生或发生在主动词之后被动tohavebeendone发生在主动词之前被动㈡Decidewhethertheunderlinephrasesinthesesentencesrefertosituationinthepresentorinthepast.Example:Thereisalottobedone.That'swhyweareworkingsohard(present)Theyworkedhardbecausetherewasalottobedonetoimprovefarmingmethods.()Theyweretheonlybigstormtohavestgyedontheirland.()ItwasthefirstbigstormtohaveaffectedBeijingsohardly.()Afteraweek,thewindseemstobedroppingatlast.()Wearetryingtostopdesertification.()It'snotverypleasanttobeouttinasandstorm.Ican'tbreathe.()SI:…S2:…S3:…S4:…•・•Suggestedanswers:©past②past©past④present⑤present⑥present㈢DecidewhichoftheunderlinedphrasesarePassiveandwhichareActive.Example:ItwasthethickestsandstormtohavebeenseeninBeijing.(passive)TOC\o"1-5"\h\zItwastheworststormtohavefectedBeingjingthisyear.()Thatwasthebiggestclimatechangeevertohavebeenrecorded.()I'dliketohavebeentoldabouttheriskofsandstormsbeforeImovedhere.()TPhavestoppeddesertificationsoquicklyisagreatachievement.()Weareproudtohavebeenthefisttowntohaverecycledourrubbish・()SI:…S2:…S3:…S4:…Suggestedanswers:①active②passive③passive④active⑤active㈣Underlinethecorrectinfinitiveform.Example:Moretreesaretobeplanted/tohaveplantednextyear.Thegovernmentseemstobefighting/tofightdesertificationsuccessfullyatlast.Wemusttoplant/plantmoretrees.Expertshopetolearn/learnmoreaboutclimatechangesinthenextfewyears.®Tohavebeenreducing/Tohavereducedcarbondioxideemissionsisagreatachievement.Suggestedanswers:①tofight②plant③tolearn④Tohavereduced㈤Rewritethesesentencesusinginfinitivestructures.usetheexamplesinactivity(P34)tohelpyou.I'mtravelingduringasandstorm.It'sdangerous.TOC\o"1-5"\h\zTt'sdangerousto.Expertshopethattheywilllearnmoreaboutthemovementofthunderstorms・fExpertshopeto・Weweretold,”Don'tleavethehous・"fWeweretoldnot.Themenneedtocompletetheworkonthehousebytheendoftheweek.fTheworkonthehouseneedsto.Itseemsthatmosthouseshavebeendestroyedbythestorm.fMosthousesseem.S1:…S2:…S3:…S4:…♦••Suggestedanswers:…travelduringasandstrom…learnmoreaboutthemovementofthunderstorms…toleavethehouse…becompletedbvtheendoftheweek…tohavebeendestroyedbythestormT:Welldone!Now,class,let'scomebacktothefollowingtwosentenceswehavejustlearned.(d.TheInfinitivefObject(宾语))

Ithasnochoicebuttoliedownandsleep.Theydidn'topentheirmouthsexcepttocomplainT:Class,lookatthewordsandphrasesinunderlinedpartsinthesesentencesonthescreen.AndgetwedonothingbuttalkaboutitIcannothelpbutfeelveryconcernedIcannotbutwonderwhatwillhappenAndthenanswerthequestionsbelow.Whichwordorphrasemeansexcept?WhichwordorphrasemeansIhaveto?WhatpartoftheVerbfollowsthewordsinunderlinedpart?S1:…S2:…S3:…S4:…Suggestedanswers:“But”means“except”除什么以外Can'thelpbut(b)“卜=havetoCan'tbut(C)Theinfinitivewithout“to”☆注意:but为介词，但其后可接不定式(如③④)，当其前面含有do动词或情态动词时，but接不带to的不定式其常用搭配：{Do/does/didsthbutdosthHavenothingtodobutdosthThereisnothingtodobutdosthCan'thelpbutdosthCan'tbutdosth㈥Underlinethecorrectanswer.Ican'thelp/buthopethattheywillsucceed.Ican'thelpbutthink/tothinkthatitwasamistake.Ican'tchose/choosebutdoit.Hedoesnothingbutcomplaining/complain.Ican'thelpbuttolove/loveher.Theworkersdonothing/notbutdrinkteaandtalktoeachother.Suggestedanswers:⑴but⑵think⑶choose⑷complain(5)love⑹nothing㈦Rewritethesesentences.Usecannotbut/cannothelpbutordonothingbut.Example:Hecomplainsaboutthetraffic.Hedoesnothingelse.fHedoesnothingbutcomplainaboutthetraffic.Ifeelweshoulddomoretolightpollution.2Healwaystalksaboutenvironmentproblems.Hedoesnothingelse.(3)Theyonlytalkaboutreducingairpollution.⑷Weadmiretheworktheyhavedonetosavetheenvironment.Suggestedanswers:Ican'thelpbutfeelweshoulddomoretofightpollution.Hedoesnothingbuttalkaboutenvironmentpro