【精品】高中英语（人教大纲）第二册下：Unit16 The United States of America(第五课时)VIP免费

TheFifthPeriodNon-finiteVerbsTeachingAim:RevisetheNon-finiteVerbsandNon-finitepassiveform.Getthestudentstodosomeexercisestomasteritsusage,andcorrectthecommonmistakesthatstudentsmakewhendoingexercises.TeachingImportantPoint:MastertheusageoftheNon-finiteverbform,especiallyhowtochoosethecorrectformwhenweuseit.TeachingDifficultPoint:Howtochoosethecorrectformwhenthev.-ingformisusedasadverbialandhowtochangethev.-ingformintoaclause.TeachingMethods:Reviewinductive,discussionmethods.TeachingAids:1.theblackboard2.themultimediaTeachingProcedures:StepⅠGreetingsandLead-in(Greetthestudentsasusual.)T:Inthisclass,we’lldiscusshowtousetheNon-finiteVerb.Let’sdivideitintothreeparts,i.e.theInfinitive,thev.-ingandthePastParticiple.Thenwe’lldosomeexercisestomasteritsusageandatlastwe’lldoatest.OK.Let’sstudythefirstpart:TheInfinitive(Writethemontheblackboard.)StepⅡDiscussion(Teacherletsstudentslookatsomesentencesonthescreenandpayattentiontotheunderlinedphrases.)T:Pleaselookatthesesentencesonthescreen.(Showthefollowingonthescreen.)Iwanttogoshopping.(object)2.Toanswerthequestionisnoteasy.(subject)3.Wouldyoulikeanythingtodrink?(attribute)4.Hewenttohelpthefarmers.(adverbial)5.Shewantedyoutoringher.(objectcomplement)Asyouknow,theinfinitivesinthesesentencesareusedassubject,object,objectcomplement,attributeandadverbialforpurpose.Maybesomeofthemarehardforyoutomaster,butinfacttheyareveryimportant.StepⅢSummarytheForms,theTensesandtheUsagesoftheInfinitiveandtheInfinitivePhraseT:Todaylet’ssumupandreviewtheformsandusagesoftheInfinitives.Pleaselookatthediagramonthescreen.(Showthefollowingonthescreen.)1FormsoftheInfinitiveActivePassiveIndefinitetodotobedonePerfecttohavedonetohavebeendoneContinuoustobedoing——Perfectcontinuoustohavebeendoing——Negativeformnot/nevertodoT:Thetensesoftheinfinitiveexpresstimerelativelytothatofthepredicateverb.Iftheactionexpressedbytheinfinitiveisofthesametimeasoroflatertimethanthatexpressedbythepredicateverb,theinfinitiveorcontinuousformsshouldbeused.Iftheactionexpressedbytheinfinitiveisofearliertimethanthatexpressdbythepredicatedverb,theperfectinfinitiveshouldbeused.Pleaselookattheexamplesonthescreen.(Showthefollowingonthescreen.)IhopetovisitBeijingagain.=IhopethatI’llvisitBeijingagain.Heseemedtohaveknownthis.=Itseemedthathehadknownthis.Heseemstobestudyinghard.=Itseemsthatheisstudyinghard.T: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.StepⅣConsolidationandPracticeT:NowyouhaveknowntheusagesoftheInfinitive.Let’sdosomeexercise.Pleaselookatthescreen.(Showthefollowingonthescreen.)Choosethebestanswertofillintheblanks:1.Theyaskedme______itasecret.A.tokeepB.keepingC.tobekeptD.kept2.Thedoctordideverythinghecould______thepatient.A.saveB.tosaveC.savingD.saved3.Theydon’tneed______soearlythistime.A.leaveB.leftC.toleaveD.leaving4.Couldyoulendmeapen______?A.towriteB.towritebyC.towriteinD.towritewith5.Itwasfoolish______youtogiveupwhatyourightlyowned.A.forB.ofC.aboutD.from6.LastsummerItookacourse...