高二英语 Unit16 The United States of America第五课时教案 人教版Word文件下载.docx
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高二英语 Unit16 The United States of America第五课时教案 人教版Word文件下载.docx
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T:
Inthisclass,we’lldiscusshowtousetheNon-finiteVerb.Let’sdivideitintothreeparts,i.e.theInfinitive,thev.-ingandthePastParticiple.Thenwe’lldosomeexercisestomasteritsusageandatlastwe’lldoatest.OK.Let’sstudythefirstpart:
TheInfinitive(Writethemontheblackboard.)
StepⅡDiscussion
(Teacherletsstudentslookatsomesentencesonthescreenandpayattentiontotheunderlinedphrases.)
Pleaselookatthesesentencesonthescreen.
(Showthefollowingonthescreen.)
Iwanttogoshopping.(object)
2.Toanswerthequestionisnoteasy.(subject)
3.Wouldyoulikeanythingtodrink?
(attribute)
4.Hewenttohelpthefarmers.(adverbial)
5.Shewantedyoutoringher.(objectplement)
Asyouknow,theinfinitivesinthesesentencesareusedassubject,object,objectplement,attributeandadverbialforpurpose.Maybesomeofthemarehardforyoutomaster,butinfacttheyareveryimportant.
StepⅢSummarytheForms,theTenses
andtheUsagesoftheInfinitiveandthe
InfinitivePhrase
Todaylet’ssumupandreviewtheformsandusagesoftheInfinitives.Pleaselookatthediagramonthescreen.
FormsoftheInfinitive
Active
Passive
Indefinite
todo
tobedone
Perfect
tohavedone
tohavebeendone
Continuous
tobedoing
——
Perfectcontinuous
tohavebeendoing
Negativeform
not/nevertodo
Thetensesoftheinfinitiveexpresstimerelativelytothatofthepredicateverb.Iftheactionexpressedbytheinfinitiveisofthesametimeasoroflatertimethanthatexpressedbythepredicateverb,theinfinitiveorcontinuousformsshouldbeused.Iftheactionexpressedbytheinfinitiveisofearliertimethanthatexpressdbythepredicatedverb,theperfectinfinitiveshouldbeused.Pleaselookattheexamplesonthescreen.
IhopetovisitBeijingagain.=IhopethatI’llvisitBeijingagain.
Heseemedtohaveknownthis.=Itseemedthathehadknownthis.
Heseemstobestudyinghard.=Itseemsthatheisstudyinghard.
Attention,please.
(1)TheInfinitivewithout“to”isusedaftertheverbs:
make,have,let,feel,listento,hear,watch,lookat,see,notice,observe,etc.
(Writethemontheblackboard.)
e.g.Wesawhimcrossthestreet.
Ilistenedtohersingasong.
ButinthePassiveVoice,theinfinitivewith“to”mustbeused.
e.g.Hewasseentocrossthestreet.
Shewasheardtoopenthedoor.
(2)Theinfinitivecanbewith“to”orwithout“to”aftertheverb“help”.
e.g.Hehelpedme(to)carrythebooksupstairs.
StepⅣConsolidationandPractice
NowyouhaveknowntheusagesoftheInfinitive.Let’sdosomeexercise.Pleaselookatthescreen.
Choosethebestanswertofillintheblanks:
1.Theyaskedme______itasecret.
A.tokeepB.keepingC.tobekeptD.kept
2.Thedoctordideverythinghecould______thepatient.
A.saveB.tosaveC.savingD.saved
3.Theydon’tneed______soearlythistime.
A.leaveB.leftC.toleaveD.leaving
4.Couldyoulendmeapen______?
A.towriteB.towritebyC.towriteinD.towritewith
5.Itwasfoolish______youtogiveupwhatyourightlyowned.
A.forB.ofC.aboutD.from
6.LastsummerItookacourseon______.
A.howtomakedressesB.howdresseshemade
C.howtobemadedressesD.howdressestobemade
7.Tomkeptquietabouttheaccident______losehisjob.
A.sonotastoB.soasnottoC.soastonotD.notsoasto
8.—Thelightintheofficeisstillon.
—Oh,Iforgot______.
A.turningitoffB.turnitoffC.toturnitoffD.havingturneditoff
9.Weagreed______herebutsofarshehasn’tturnedupyet.
A.havingmetB.meetingC.tomeetD.tohavemet
10.Johnwasmade______thetruckforaweekasapunishment.
A.towashB.washingC.washD.tobewashing
Suggestedanswers:
1.A2.B3.C4.D5.B6.A7.B8.C9.C10.A
Nowlet’sdealwithPart2:
thev.-ing(Writeitontheblackboard)Pleaselookatthescreen.Payattentiontothefunctionoftheunderlinedparts.(Showthemonthescreen.)
1.Beatingachildwilldomoreharmthangood.
2.Ihatewritingletters.
3.Doyoumindmymakingasuggestion?
4.I’mlookingforwardtoseeingyouatChristmas.
5.Yourhairneedscutting.(=Yourhairneedstobecut.)
Whocantellusthefunctionofthev.-ingineachsentence?
Pleasetryyourbest.
S1:
I’lltry.No.1,“beating”isusedassubject.No.2,3,4,5,allthev.-ingareusedasobjects.
Canwetransformthesecondsentenceinto“Ihatetowriteletters”?
Ss:
No,wecan’t.
You’reright.InEnglish,thev.-ingisonlyusedaftersomeverbs,theyare:
admit,avoidconsider,delay,dislike,enjoy,escape,excusefeellike,finish,giveup,can’thelp,imagine,mind,miss,practise,suggest,understand.(WritethemontheBb.)
e.g.Haveyouconsideredgettingajobinthecity?
Ienjoytravellingabroad.
Whenthev.-ingisusedafter“need,requireandwant”,itcanexpressthepassivemeaning.
e.g.Thegardenneedswatering.(=Thegardenneedstobewatered.)
Now,lookatsomeothersentencesonthescreen.
1.ThetrainstandingatPlatformEightisforWuhan.
2.Peopleshoppingcarrymanyplasticbags.
3.Hearingthenoise,theyimmediatelyrushedoutoftheroom.
4.Havinggraduatedfromthecollege,hewenttoafactory.
Haveadiscussioningroupsoffourandthenfindoutthefunctionofthev.-ing(orpresentparticiple)ineachsentence.
(Teachergoesamongthestudentstohelpthem.)
(Afewminuteslater)
OK.Whowantstosay?
S2:
Letmetry.InNo.1and2,thev.-ingisusedasattribute.InNo.3and4,thev.-ingisusedasadverbial.
You’reright.WeshouldnoticeNo.3and4.Whentheactiontakesplaceatthesametimeorimmediatelybeforetheactionindicatedbythemainverb,weusethev.-ingform.Whentheactionhasbeenfinishedbeforetheactionindicatedbythemainverb,weshouldusetheperfectparticiple—havingdone.Isthatclear?
Yes.
StepⅤPractice
Now,let’sdosomeexercises.Lookatthescreen,please.Changetheclauseintoav.-ingformineachsentence.Youcanmakeanychangeifnecessary.Youmaydiscussinpairs.
(Showthefollowingontheblackboard)
1.AsPeterwasfeelingill,hedecidedtostayathome.
2.WhenIhadfinishedmyhomework,Ibegantopreviewmylessons.
3.Ifyouheatwater,youcanchangeitintosteam.
4.Theystoodattheeastendofthebridgeandwaitedforthebus.
1.Beingill,Peterdecidedtostayathome.
2.Havingfinishedmyhomework,Ibegantopreviewmylessons.
3.Heatingwater,youcanchangeitintosteam.
4.Theystoodattheeastendofthebridge,waitingforthebus.
Fromthesentencesabove,wecanseethatthev.-ingformcanbeusedtoexpresscause
(1),time
(2),condition(3)andmanneroracpaniedsituation(4).Generallyspeaking,whenthev.-ingformisusedtoexpresscause,timeorcondition,itisoftenputbeforethemainclause;
whenitisusedtoexpressmanneroracpaniedsituation,itisoftenputafterthemainclause.Areyouclearaboutit?
StepⅥConsolidation
Nowlet’sdosomeexercisesonthescreen.Youcandiscussinpairs.ThenI’llchecktheanswers.
pletethesesentenceswiththegivenwordsusingthev.-ingforms:
1.______abravewoman,theservantlethimintothecastle.(be)
2.______firetothecastle,thetwoescapedintothewoods.(set)
3.Withhisheart______hard,heknockedatthedoor.(beat)
4.______forthreedays,therevolutionaryarrivedatthecastle.(travel)
5.While______nearthegates,hesawavegetablecartingalongtheroad.(wait)
1.Being2.Havingset3.beating4.Havingtravelled5.waiting
(Afewminuteslater,teachercheckstheanswers.)
Nowlet’slookatthethirdpart:
PastParticiple.(Writethemontheblackboard.)
WeknowthatthePastParticiplecanbeusedasattributetomodifyanoun.Nowlookatthesesentences.
1.Thestolencarwasfoundbythepolicelastnight.
2.IreceivedtheletterwrittenbymyoldfriendJane.
CanyoutellusthedifferencebetweenthePastParticiplesusedinthesetwosentences?
S3:
Letmetry.ThePastParticipleinthefirstsentenceisputbeforethenounitmodifies,buttheoneinthesecondsentenceisputafterthenounitmodifies.
Yes,you’reright.Doesanyoneknowwhy?
S4:
Ithinkit’sbecauseinthefirstsentence,thePastParticipleisonlyoneword,butinthesecondsentence,it’saPastParticiplephrase.
That’sright.Now,lookatsomedifferentsentences.
1.Don’tspeakuntilspokento.
2.Givenmoretime,wecoulddotheworkbetter.
3.Destroyedbytheearthquake,thehousehadtoberebuilt.
WhatarethesePastParticiplesusedas?
They’reallusedasadverbial.
Yes.You’reright.AndweknowthatthePastParticipleasAdverbialcanexpressdifferentadverbials,suchastime,cause,condition,manner.DoyouknowwhatthePastParticipleineachsentenceexpresses?
Whoknows?
S5:
ThePastParticipleinthefirstsentenceexpressestime.Thesecond
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