2023学年完整公开课版Unit3Electricity2

Unit3ElectricityNaturalelements

（元素）firewindwaterlightNaturalelementelectricityelectricityPowerthatcanmakeheat,soundandlightandmovethings(电n.)electricelectricalelectricironelectriclightElectriclightsandelectricironsarebothelectricalappliances.Theybothuse

electricity.electricalapplianceselectricadj.（作定语）电的；电动的electricaladj.电的；与电有关的electricityn.电Howcanwegetelectricity?lightningpowerstationDifferentkindsofpowerstationElectricityis

invisible.Itflows

throughawire,likewater.Whatis

electricity

?invisiblethatcannotbeseen(看不见的

adj.)visibleinvisiblyHeisan

invisible

man.explanationwordsthatmakesomethingclear解释n.explainv.Iexplainedwhatwaselectricity.Electricityis

invisible.Itflows

throughawire,likewater.Whatis

electricity

?Whatcanweuseelectricitytodo?Wecanuseelectricityto…Electricityisagoodservant,becauseitservesusalot.servant（仆人

n.)apersonworkingintheserviceofanotherservev.服务；为…效力；Howcanweuseelectricitytoserveus?Wechangeelectricityintootherformsofenergy.energy(能量n.)power

thatmakethingsworkWhatkindsofenergycanwechangeelectricityinto??HeatenergyMovementenergyLightenergySoundenergyHowcanweuseelectricitytoserveus?Wechangeelectricityintootherformsofenergy.acomputerafanalightanair-conditionerafridgeaTVElectricalappliancesrecorderssoundenergyWhatkindofenergycantheyproduce?Recorderscanproducesoundenergy.ironsheatenergyIronscanproduceheatenergy.Whatkindofenergycantheyproduce?lightslightenergyWhatkindofenergycantheyproduce?Lightscanproducelightenergy.fansmovementenergyFanscanproducemovementenergy.Whatkindofenergycantheyproduce?radiomobilephonericecookerTVheatenergymovementenergylightenergysoundenergyheatenergymovementenergylightenergysoundenergytorchvacuumcleanerfanironTestyourmemory

Areyouready？

Wemustn’ttouchtheplugwiththewethandWemustn’t

touchtheplugwiththewethand.Wemustn’ttubheaterhavea

bathputtheheaternearthetubWemustn’t

puttheheaternearthetub.Wemustn’tplaywiththeelectricityWemustn’t

playwiththeelectricity.SafetyFirstwethandsA:CanI…B:No.Youmustn’t…waterheaternearthetubheatertouchtheplugplaywithelectricitychangethebulbopenthewindowSaveElectricityHomework:

MakeaPosterSafetyfirstenergyelectricityinvisibleexplanationconnectionpolitelyfoolishservant1.bury2.connect3.energy4.explaination5.invisible6.metre7.monthlytojointoplaceinth