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1、动 词高中英语词汇系列高中英语词汇系列高中英语词汇系列switchswitchswitchTeaching ObjectivesLearnthemeaningsandcollocationsof“switch”;PutwhatSshavelearnedintopractice.12Today,we have to use switches for our lights,knobs for ourappliances,andremotecontrolsforourTVsandairconditioners.Inthefuture,wewill beusing advanced technolog
2、y everydayforautomaticcontrolofjustabouteverythinginourhome.Thefuturehomewilluseintegratedsensorstotellwhenyouleavehomeeachmorning,andthengointoanenergy-efficientmodeallbyitself.Youwillnolongerhavetothinkaboutturningswitchesonandoffyourself.Lead inAccording to the passage,answer the questions1.Whatd
3、oes“switch”meanhere?2.Whatcanaswitchdofromthistext?Asmallcontrol.Itcanturnonoroffourlights.Meaning(noun)switchswtn.1.a small device that you use to turn electrical equipment on and offMeaning(noun)2.Shemadetheswitchfromfull-time to part-time workwhenherfirstchildwasborn.1).Whatsthepartofspeechofthew
4、ord“switch”inthissentence?2).CanyouexplainthewordinEnglish?a change from one thing toanother.switchItmeans:Meaning(noun)3.A:Michel,whatdidyougetforyourbrotheronhisbirthday?B:Igavehimaswitch.1).Whatsthepartofspeechoftheword“switch”inthissentence?2).Whatisaswitch?agamemachine.switchItmeans:This word c
5、an also be used as a verb.Do you want to learn how to use it?Meaning(verb)1.After the Songhu Battlebrokeoutin 1932,Qian Xuesen madethe decision to switch his majortoaviationbecauseherealisedthatChinaneededitsownpowerfulairforcetoprotectanddefendthecountry.1).DidQianXuesenchangehismajor?whydidhedoso?
6、2).CanyouexplainthewordinEnglish?tomakesth.changefromonethingtoanother.switchItmeans:Meaning(verb)2.Icantworknextweekend-willyouswitchwithme?1).DoIwanttoexchangemyworktimewithsomeone?2).CanyouexplainthewordinEnglish?todosb.elsesjobforashorttimewhiletheydoyours.switchItmeans:Meaning(verb)3.I think Il
7、l switch thissweater for one in anothercolor?1).DoIreplacethissweaterwithoneinanothercolor?2).CanyouexplainthewordinEnglish?to replace one thing withanother.switchItmeans:Word search.词源故事Collocationswitch over Letsswitch over toChannel4.To change the channel that you watch.Canyouguesswhat“switchover
8、to”means?switch off/onPleaseswitchthelightsoff asyouleave.To turn a light,machine off by pressing a button 关（电灯，机器等）.Canyouguesswhat“switchoff”means?1).AmIinterestedin“football”?2).Canyouexplainthephrase“switchoff”inEnglish?Collocationswitch off WhenIheartheword“football”Iswitchoff.To stop thinking
9、about sth.Make a word web of“switch”Frayer ModelswitchDefinitions(inyourownwords)orsynonymsCharacteristics:(verb)1.transitiveorintransitive:2.otherforms:Examples:(verb)CollocationsPleasefinishthisdiagram.Translation1.MaYuncouldswitcheasilyfromChinesetoEnglish._2.Somefarmershaveswitchedtoorganicfarmi
10、ng._3.Thisswitchhasdecreasedpollutioninthecountrysmajorlakesandreservoirsandmadedrinkingwatersaferforpeople._4.Pleasemakesurethatallthelightsareswitchedoffatnight._5.Canyoureachthelightswitchfromwhereyouresitting?_转换改变转变开关关掉Practice1.TonyfinallygottheTVsetworkingagainby_(switch)channels.2.Wehavetous
11、e_（switch）forourlights,knobsforour appliances,and remote controls for our TVs and airconditioners.3.You must switch _ the TV when you leave the livingroom.switchesswitchingoffLets discuss.Youcanswitchtrackssothatarunawaytrainwillkillonepersoninsteadoffive.Willyouthrowtheswitch?Whatifyoure the one innocent person?Variants of this“trolleyproblem”areclassicethicsquestions.Pleaseexpressyouropinionwithyourpartner.