高中词汇系列课件（五十五）

动词高中英语词汇系列高中英语词汇系列switchswitchTeachingObjectivesLearnthemeaningsandcollocationsof“switch”;PutwhatSshavelearnedintopractice.12Meeting“switch”Today,wehavetouseswitchesforourlights,knobsforourappliances,andremotecontrolsforourTVsandairconditioners.Inthefuture,wewillbeusingadvancedtechnologyeverydayforautomaticcontrolofjustabouteverythinginourhome.Thefuturehomewilluseintegratedsensorstotellwhenyouleavehomeeachmorning,andthengointoanenergy-efficientmodeallbyitself.Youwillnolongerhavetothinkaboutturningswitchesonandoffyourself.LeadinAccordingtothepassage,answerthequestionsWhatdoes“switch”meanhere?Whatcanaswitchdofromthistext?Asmallcontrol.Itcanturnonoroffourlights.Meaning(noun)switch[swɪtʃ]n.1.asmalldevicethatyouusetoturnelectricalequipmentonandoffMeaning(noun)2.Shemadetheswitchfromfull-timetopart-timeworkwhenherfirstchildwasborn.1).What’sthepartofspeechoftheword“switch”inthissentence?2).CanyouexplainthewordinEnglish?achangefromonethingtoanother.switchItmeans:Meaning(noun)3.A:Michel,whatdidyougetforyourbrotheronhisbirthday?B:Igavehimaswitch.1).What’sthepartofspeechoftheword“switch”inthissentence?2).Whatisaswitch?agamemachine.switchItmeans:Thiswordcanalsobeusedasaverb.Doyouwanttolearnhowtouseit?Meaning(verb)1.AftertheSonghuBattle

brokeout

in1932,QianXuesenmadethedecisiontoswitchhismajorto

aviation

becauseherealisedthatChinaneededitsownpowerfulairforcetoprotectand

defend

thecountry.1).DidQianXuesenchangehismajor?whydidhedoso?2).CanyouexplainthewordinEnglish?tomakesth.changefromonethingtoanother.switchItmeans:Meaning(verb)2.Ican’tworknextweekend-willyouswitchwithme?1).DoIwanttoexchangemyworktimewithsomeone?2).CanyouexplainthewordinEnglish?todosb.else’sjobforashorttimewhiletheydoyours.switchItmeans:Meaning(verb)3.IthinkI’llswitchthissweaterforoneinanothercolor?1).DoIreplacethissweaterwithoneinanothercolor?2).CanyouexplainthewordinEnglish?toreplaceonethingwithanother.switchItmeans:PracticingusingWordsearch.Memorizing词源故事CollocationswitchoverLet’sswitchovertoChannel4.Tochangethechannelthatyouwatch.Canyouguesswhat“switchoverto”means?switchoff/onPleaseswitchthelightsoffasyouleave.Toturnalight,machineoffbypressingabutton关（电灯，机器等）.Canyouguesswhat“switchoff”means?1).AmIinterestedin“football”?2).Canyouexplainthephrase“switchoff”inEnglish?CollocationswitchoffWhenIheartheword“football”Iswitchoff.Tostopthinkingaboutsth.Makeawordwebof“switch”RecallingandusingFrayerModelswitchDefinitions(inyourownwords)orsynonymsCharacteristics:(verb)transitiveorintransitive:otherforms:Examples:(verb)CollocationsPleasefinishthisdiagram.TranslationMa

Yun

couldswitcheasilyfromChinesetoEnglish.________Somefarmershaveswitchedtoorganicfarming.

__________This

switch

hasdecreasedpollutioninthecountry’smajorlakesandreservoirsandmadedrinkingwatersaferforpeople._____Pleasemakesurethatallthelightsareswitchedoffatnight.___Canyoureachthelightswitchfromwhereyou’resitting?______转换改变转变开关关掉PracticeTony

finally

got

the

TV

set

working

again

by

__________

(switch)

channels.

We

have

to

use

________（switch）for

our

lights,

knobs

for

our

appliances,

and

remote

controls

for

our

TVs

and

air

conditioners.Youmustswitch____theTVwhenyouleavethelivingroom.switchesswitchingoffLet’sdiscuss.Youcanswitchtrackssothatarunawaytrainwillkil