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Targetlanguage语言目标Grammarl.Infinitive:"to+VGrammar2.but+infinitive「tobedonem口＞Jtobedoing、tohavebeendonebbut+todobut+doAbilitygoals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一basedapproachDeductive&inductivemethodTeachingAids教具AcomputerandprojectorSuchrealsubjectsasbooks/chalketc.Teachingprocedures教学步骤StepI.GreetingsGreetthestudentsasusualStepH.ExplanationandpracticeA.(lead-in)T：Class,correctthemistakesinthesesentencesonthescreen.(Teachershowsthefollowingsentencesonthescreen)Example:Peoplecouldn,ttobreathewhentheywentoutside.Thereisstillalottohavebedoneabouttraffic.weshouldtorecyclerubbish,notburnit.Weneeddevelopbetterpublictransportincities.]ThewindisstrongenoughblowthesandacrossthePacificOcean.Somecountriesaretryingsavetheforests.S1:…S2:…S3:…S4:…Suggestedanswers:Thereisstilla10ttobedoneabouttraffic.weshouldrecyclerubbish,notburnit.Weneedtodevelopbetterpublishtransportincities.ThewindisstrongenoughtoblowthesandacrossthePacificOcean.Somecountriesaretryingtosavetheforest.T:Class,seenfromthesentencesabove,whatdoestheunderlinedpartsreferto?Ss:TheInfinitiveT:WhatisthestructureoftheInfinitive?(Askstudentstolookatthescreenandthinkitover)Ss:ThebasicstructureoftheInfinitiveis"to+v”(begintostudytheGrammarpart)T:Good,class,lookatthescreenandthinkaboutthesentences-whatarethefunctionsoftheInfinitiveToseeistobelieve.Yourjobistowashdishes.Heaskedhisstudentstolistentohimcarefullyinclass.Itiswisetogiveupsomething.

S1:…S2:…S3:…S4:…Suggestedanswers:①TheInfinitive(to+v)fsubject(主语)②TheInfinitive(to+v)fpredicative(表语)③TheInfinitive(to+v)fobjectcomplement(宾语补足语)④TheInfinitive(to+v)fsubject(主语)T:Quiteright.(Teachershowsthefollowingonthescreen){a.subjectb.Predicativeobjectcomplement㈠Practice.(FillintheblankswiththecorrectformoftheVerbsinthebracket.)It,sright (give)upsmoking.I’dliketheproblem(discuss)thenextmeeting.Shewilltellyouwhichbus(take).Ioftenhearhim(sing)thesong.Suggestedanswers:①togive②tobediscussed③totake④singT:Infact,therearesomeothermainusagesoftheInfinitiiredditiontotheusageabove.TheInfinitivefObject(宾语)E.g.①Hewantedtogo②Hepromisedtogivemeachance.③Ifinditinterestingtoworkwithhim.④Ithasnochoicebuttoliedownandsleep.⑤Theydidn,topentheirmouthsexcepttocomplainTheInfinitivefAttributive(定语)E.g.①Heisamantodependon.“inorderto/soasto”E.g.①Shegotoffthetraininordertoseeafriend.“inorderto/soasto”E.g.①Shegotoffthetraininordertoseeafriend.Shegotoffthetrainsoastoseeafriend.inordertoseeafriend.rAdverbialofpurpose(目的状语)E.g.shegotoffthetraintoseeafriend.TheInfinitivef<Adverbialofresult(结果状语)E.g.Hehurriedtotheschooltofindnobodythere.㈡Practice.(FillintheblankswiththecorrectformoftheVerbsinthebracket.)friend,shegotoffthetraininBeijing.①Theyhoped(find)newresourcesformankind.Thereisnothing(worry)about.Themeeting(hold)tomorrowisveryimportant.Thequestionisdifficult(answer).Icamehere(see)you.Wewereveryexcited(hear)thenews.Suggestedanswers:①tofind ②toworry ③to beheld ④to answer ⑤to see ⑥to hearStepHI.Consolidation一.DosomeExercises:㈠Puttheverbsinbracketsintothecorrectform.Itisfrightening(walk)intheroadinasandstorm.IhopeIreachhomesoon.Expertshope (learn)moreaboutthemovementofsandstorms.(see)arealsandst0rmwasveryfrightening.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“toknowWhichverbhappensfirstordotheyhappenatthesametime?形式时间概念语态todo/do与主动词同时发生或发生在主动词之后主动tobedoing与主动词同时发生，动作在进行主动tohavedong发生在主动词之前主动tobedong与主动词同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.()Theyweretheonlybigstormtohavestayedontheirland.()③ItwasthefirstbigstormtohaveeffectedBeijingsohardly.()④Afteraweek,thewindseemstobedroppingatlast.()Wearetryingtostopdesertification.()⑥It'snotverypleasanttobeouttinasandstorm.Ican,tbreathe.()S1:…S2:…S3:…S4:……Suggestedanswers:①past②past③past④present⑤present ⑥present㈢DecidewhichoftheunderlinedphrasesarePassiveandwhichareActive.Example:ItwasthethickestsandstormtohavebeenseeninBeijing. (passive)TOC\o"1-5"\h\z①ItwastheworststormtohaveaffectedBeingjingthisyear. ()②Thatwasthebiggestclimatechangeevertohavebeenrecorded ()③I'dliketohavebeentoldabouttheriskofsandstormsbeforeImovedhere. ()Tohavestoppeddesertificationsoquicklyisagreatachievement. ()Weareproudtohavebeenthefisttowntohaverecycledourrubbish. ()S1:…………Suggestedanswers:①active②passive③passive④active⑤active㈣Underlinethecorrectinfinitiveform.Example:Moretreesaretobeplanted/tohaveplantednextyear.Thegovernmentseemstobefighting/tofightdesertificationsuccessfullyatlast.Wemusttoplant/plantmoretrees.©Expertshopetolearn/leaEmoreaboutclimatechangesinthenextfewyears.Tohavebeenreducing/Tohavereducedcarbondioxideemissionsisagreatachievement.Suggestedanswers:①tofight②plant③tolearn④Tohavereduced㈤Rewritethesesentencesusinginfinitivestructures.usetheexamplesinactivity(P34)tohelpyou.①I’mtravelingduringasandstorm.It’sdangerous.—It'sdangerousto.©Expertshopethattheywilllearnmoreaboutthemovementofthunderstorms.—Expertshopeto ,③Weweretold,"Don'tleavethehous."—Weweretoldnot ,Themenneedtocompletetheworkonthehousebytheendoftheweek.—Theworkonthehouseneedsto.Itseemsthatmosthouseshavebeendestroyedbythestorm.—Mosthousesseem.S1:…S2:…S3:…S4:……Suggestedanswers:1)…travelduringasandstrom2)…learnmoreaboutthemovementofthunderstorms3)…toleavethehouse4)…becompletedbytheendoftheweek5)…tohavebeendestroyedbythestormT:Welldone!Now,class,letscomebacktothefollowingtwosentenceswehavejustlearned.(d.TheInfinitive—Object(宾语))④Ithasnochoicebuttoliedownandsleep.⑤Theydidn,topentheirmouthsexcepttocomplain.T:Class,lookatthewordsandphrasesinunderlinedpartsinthesesentencesonthescreen.AndgetwedonothingbuttalkaboutitIcannothelpbutfeelveryconcernedIcannotbutwonderwhatwillhappenAndthenanswerthequestionsbelow.⑴Whichwordorphrasemeansexcept?(2)WhichwordorphrasemeansIhaveto?⑶WhatpartoftheVerbfollowsthewordsinunderlinedpart?S1:…S2:…S3:…S4:…Suggestedanswers:①“But"means“except”除什么以外②Can,thelpbut(b)，—havetoCan,tbut(c) --r③Theinfinitivewithout“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.(DIcan,thelp/buthopethattheywillsucceed.(2)Ican,thelpbutthink/tothinkthatitwasamistake.⑶Ican,tchose/choosebutdoit.(4)Hedoesnothingbutcomplaining/complain.⑸Ican,thelpbuttolove/loveher.(6)Theworkersdonothing/notbutdrinkteaandtalktoeachother.Suggestedanswers:⑴but ⑵think ⑶choose(4)complain(5)love (6)nothing㈦Rewritethesesentences.Usecannotbut/cannothelpbutordonothingbut.Example:Hecomplainsaboutthetraffic.Hedoesnothingelse.fHedoesnothingbutcomplainaboutthetraffic.⑴Ifeelweshoulddomoretolightpollution.(2)Healwaystalksaboutenvironmentproblems.Hedoesnothingelse.(3)Theyonlytalkaboutreducingairpollution.⑷Weadmiretheworktheyhavedonetosavetheenvironment.Suggestedanswers:(1)Ican'thelpbutfeelweshoulddomoretofightpollution.(2)Hedoesn