2019-2020年高二英语Unit9 Saving the earth The Fifth Period 人教版

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1、2019-2020年高二英语Unit9SavingtheearthTheFifthPeriod人教版TeachingAim:Learnandmastertheuseofinversion.TeachingImportantPoint:Helptilestudentstomakeasummaryofallkindsofinversion.TeachingDifficultPoint:Helpthestudentsknowinwhichcasesfullinversionisusedandinwhichcasespartialinve

2、rsionisused.TeachingMethods:Revision;summary;explanationandinductivemethods.TeachingAids:aprojectorandtheblackboardTeachingProcedures:StepGreetingsGreetthewholeclassasusual.StepIIRevisionandLead-inT:InUnit9,we'velearntsomesentencesininvertedword-order.Now,I'llshowyous

3、omesentencesonthescreen.Pleasetellwhichareinnaturalornormalword-orderandwhichareininvertedword-order.Lookatthescreenandparethemcarefully.(Showthefollowingonthescreen.)1.Outrushedtheboy.Theboyrushedout.2Onlyinthiswaycanweloseweight.Wecanloseweightonlyinthisway.T:Whocan

4、telluswhichareinnormalword-order?S:Iknow.Thesecondsentenceineachpairisinnormalword-order.T:Howdoyouknow?S:Ifthepredicateesafterthesubject,itisinnormalword-order.T:Verygood.Sothefirstsentenceineachpairisininvertedword-order.Inthefirstpair,thewholepredicateofthefirstsen

5、tenceesbeforethesubject,inthesecondpair,partofthepredicateofthefirstsentenceesbeforethesubject.Now,pleaselookatthescreen.(Showthefollowingonthescreenandmakebriefexplanationifnecessary.)Word-ordernaturalword-order:S+Vinvertedword-orderV+SAuxiliary/Modal+S+VStepHISummar

6、yandExplanationT:Ifthepredicateverbisplacedbeforethesubject,thesentenceissaidtobeininvertedword-order.Suchaword-orderiscalledinversion.Weuseinversionfortworeasons.Onefortheneedofthegrammaticalstructureofagiventypeofsentence,theotherforemphasisofacertainpartofasentence

7、.Inversionhappensinquestions,andinanumberofothercases.Therearetwomainkindsofinversion.Insomecasesthewholeverbesbeforethesubject.Thiskindofinversioniscalledfullinversion.Andinmostcases,anauxiliaryverboramodalverbesbeforethesubjectandtherestofthepredicateverbesafter.Ift

8、here'snoauxiliaryormodalverb,“do”“does”or“did”shouldbeadded.Thiskindofinversioniscalledpartialinversion.Now,let’smakeasummar