外研版高中英語必修三Module4SandstormsinAsia語法課（2）By王小林，來自武清區(qū)河西務中學Part1教學設計Teachinggoals教學目標Targetlanguage語言目標Grammarl.Infinitive:"to+VGrammar2.but+infinitive「tobedonem口＞Jtobedoing、tohavebeendonebbut+todobut+doAbilitygoals能力目標Makesurethelearnersarefamiliarwiththeformofthesetwogrammarsandmasterthefunctionofthem.Learningabilitygoal學能目標HelpthelearnersfindoutandsummarizethefunctionofInfinitiveusingDeductive&Inductivemethods.TeachingImportantanddifficultpoints教學重難點EnablethelearnerstounderstandandmasterthefunctionofInfinitive,especiallyitsvariationsandhowtohelpstudentsusethemaccurately.Teachingmethods教學方法Task一basedapproachDeductive&inductivemethodTeachingAids教具AcomputerandprojectorSuchrealsubjectsasbooks/chalketc.Teachingprocedures教學步驟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(主語)②TheInfinitive(to+v)fpredicative(表語)③TheInfinitive(to+v)fobjectcomplement(賓語補足語)④TheInfinitive(to+v)fsubject(主語)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(賓語)E.g.①Hewantedtogo②Hepromisedtogivemeachance.③Ifinditinterestingtoworkwithhim.④Ithasnochoicebuttoliedownandsleep.⑤Theydidn,topentheirmouthsexcepttocomplainTheInfinitivefAttributive(定語)E.g.①Heisamantodependon.“inorderto/soasto”E.g.①Shegotoffthetraininordertoseeafriend.“inorderto/soasto”E.g.①Shegotoffthetraininordertoseeafriend.Shegotoffthetrainsoastoseeafriend.inordertoseeafriend.rAdverbialofpurpose(目的狀語)E.g.shegotoffthetraintoseeafriend.TheInfinitivef<Adverbialofresult(結果狀語)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.老師可以指導上述句子說：Inthefirstsentence,wehaveverbs,“seems”and“toknowWhichverbhappensfirstordotheyhappenatthesametime?形式時間概念語態(tài)todo/do與主動詞同時發(fā)生或發(fā)生在主動詞之后主動tobedoing與主動詞同時發(fā)生，動作在進行主動tohavedong發(fā)生在主動詞之前主動tobedong與主動詞同時發(fā)生或發(fā)生在主動詞之后被動tohavebeendone發(fā)生在主動詞之前被動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(賓語))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為介詞，但其后可接不定式(如③④)，當其前面含有do動詞或情態(tài)動詞時，but接不帶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