Chapter4ElectricityA.Whatdoyouknowaboutthefollowingappliances?radioirontorchelectricfanricecookerTVsetvacuumcleanermobilephoneWhatkind(s)ofenergy

canitproduce?soundenergyWhatkind(s)ofenergy

canitproduce?soundenergyWhatkind(s)ofenergy

canitproduce?heatenergyWhatkind(s)ofenergy

canitproduce?lightenergysoundenergyWhatkind(s)ofenergy

canitproduce?lightenergyWhatkind(s)ofenergy

canitproduce?movementenergyWhatkind(s)ofenergy

canitproduce?movementenergysoundenergyWhatkind(s)ofenergy

canitproduce?heatenergyIfthereisnoelectricity,canthesethingswork?

Electricityisveryimportanttous,itislikeaservantofmankindAservantofmankindTask1:findthewordsandguessthemeaningsofthempowerstation流動(dòng)wire燈泡packet發(fā)電站lightbulb電纜flow解釋explanation包,袋c(diǎn)onnect電線cable與…連接Task2:Readparagraph1—4anddotheTorFquestions1.BennyisDaisy’sfather2.Daisywantedtobuysomeelectricity3.Bennydidn’treallywantgopacketofelectricity4.DaisywouldnotliketobuytheelectricityforBenny.FTFFbrother.wouldliketosweetsTask3:Readparagraph5—6andanswerthequestionsWhatiselectricitylike?Whatdoweuseelectricitytodo?Itislikewater.WeuseelectricitytowatchTVandruntheairconditioner.Task3:readparagraph7—9andfillintheblanksHowdowegettheelectricity?wirecablepowerstationstreetbulbTask4:Readparagraph10—14andanswerthequestion1.Whatdiddaisybuy?2.Whatcanthechemicalsproduceinthebatteries?3.WasDaisyright?3.Whoislookingfoolishnow?Daisyboughtsomebatteries.Theycanproduceelectricity.Bennyislookingfoolishnow.Yes.Shewasright.Importantsentences1.Doesanyonewantanything?2.Canyougetmeapacketofelectricity?3.I’vetrickedDaisyatlast.4.Shethinks(that)youcanbuyitinpackets.5.She’lllookfoolish.6.Electricityflowsthroughawire.7.It’slikewater,inaway.8.Althoughelectricityismuchmoredangerousthanwater,that’snotabadexplanation.9.Youmustalwaysbecarefulwithit.10.Canyoutellmewhatitlookslike?11.Nobodyhaseverseenelectricity.12.It’sinvisible.(Itcannotbeseen)13.Wecanchangeitintodifferentformsofenergyandthenwecansee,hearorfeelit.14.Theseareconnectedto

cables

buriedunderthestreet.15.Cablesareconnectedtoapowerstation.Thatiswherewemakeelectricity.16.Theycontainelectricity.Thechemicalsinsideproduceelectricity.一包在某種程度上對(duì)…小心不同形式的能量連接到電站愚弄某人8想起9看起來象10最后1apacketof2inaway3becarefulwith…4differentformsofenergy5beconnectedto/with…6apowerstation7tricksb./makefunofsb.playatrickonsb.8thinkof9looklike10atlast/intheend1atlast:

intheend,finally2bury:putsth./someoneintheground3cable:

athickropeofwirewhichelectricitypassesthrough4connect:

jointogether5contain:

havesth.insideorasapart6electricity:

powerthatcanmakeheat,soundandlight,andmovethings

7explanation:wordsthatmakesomethingclearorsaywhatsomethingmeans8form:shapeorkind9grin:averywidesmileinaway:partlyinvisible:

cannotbeseenlightbulb:

theglasspartofanelectriclampthatgivesoutlightFillintheblankswiththecorrectwords.

Hefailedmanytimes.___________hesucceeded.LinDaiyuwasverysadwhenshe__________theflowers.Computersare___________witheachotherbymeansofcables.Airisan____________gas.Theareawasindarknessaftertheearthquakebecausethe___________wascutoff.AtlastburiedconnectedinvisibleelectricityFillintheblankswiththecorrectwords.6.Thelittleboyisalwaysfullof___________.Itseemstomethatheisnevertired.7.Waterhasthree_________---liquid,gasandsolid.8.Iagreewithhim___________.Someofhisideasareright.9.Thereisa________onhisfacewhenheopenedtheChristmasgift.10.Whenyouarelateforschool,youshouldgivetheteacheran____________.energyformsinawaygrinexplanationWritethewordsthatthepronounsinitalicsreferto.

Iamgoingtobuysomesweets.Canyougetmeapacketofelectricity,please?Shethinksyoucanbuyitinpackets.It’slikewater,inaway.Youmustalwaysbecarefulwithit.DaisyBennyelectricityElectricityElectricityWritethewordsthatthepronounsinitalicsreferto.6.Itcomesintoourflatthroughthinwires.

7.Theseareconnectedtocablesburiedunderthestreet.8.Therewasagrinonhisface.9.Theycontainelectricity.ElectricityThinwiresBenny’sBatteriesE2answerthesequestionswithYesorNo,andgiveevidencefromthestory.1DidBennyoftentrytotrickDaisy?

Yes.Hesaid,‘I’vetrickedDaisyatlast.’2WasBennysurewhatelectricitylookedlike?

No.Hescratchedhishead.3WhenDaisyreturned,didBennythinkthathistrickhadbeensuccessful?

Yes.Therewasagrinonhisface.Synopsisbyparagraph:P1—3Daisyisgoingtotheshop,andBennytriestotrickherbyaskinghertobuyapacketofelectricityforhim.Daisyagrees,andBennythinkssheisfoolish.Synopsisbyparagraph:P4-6BennyexplainsthatelectricitycomesthroughwiresandDadaddsthatelectricitycanbedangerous.Synopsisbyparagraph:P7--13MumandDadexplainthatwegetelectricityfromthepowerstationthroughwiresandcables.Synopsisbyparagraph:P14--21Daisyreturnswithsomebatteries,thepacketsofelectricityBennyaskedfor.BennyissurprisedandnowitisBennywholooksfoolish.ListeningUnderstandingthemainpointsofadialogueThereisaproblemwiththeelectricityinBenny’sflat.Sometimes,altheelectricitygoesoff.Anelectricianhascometodealwiththisproblem.ListentotheconversationbetweentheelectricianandBenny’smother.Theyaretryingtofindoutwhichthingswereswitchedonoroffwhentheelectricitystopped.

CircleOFForONnexttotheobjects.1lights2kettle3vacuumcleaner4airconditioner5washingmachine6ricecooker7fridge8television9ironONOFFOFFONOFFONONONONTapescritpWell,theotherflatsinyourbuildingareallright.Ithinksomethingiswrongwithoneofyourmachines.Whataboutthewashingmachine?Wasthaton?

No,itwasoff.Iwasn’tdoinganywashingatthattime.Canyourememberwhatwason?

Theusualthings.Thelightswereon,ofcourse,andtheairconditioner.Wealwayshavetheairconditioneroninthesummer.MANWOMANMANWOMANTapescritpAndIsupposethefridge

wason.

Yes,thefridgewason.Andthetelevision.Thatseemstobeonallthetimeinourflat!Wereyoudoinganyvacuumingorironing?

No,thevacuumcleanerwasoff.Itwasinthecupboard.Ithinktheironwason,though.Mysonwasdoingsomeironing.Butit’sabrandnewiron,andthatshouldbeallright.MANWOMANMANWOMANTapescritpWhataboutthekettle?Wasthekettleon?

No,thekettlewasoff.Butthericecookerwason.Ah!

Yes.AndIthinkitwasonlasttimewhenalltheelectricitywentoff,too.Right.Itsoundslikethericecookercouldbecausingyourproblems.Letmehavealookatitandseeifit’sworkingproperlyornot.I’llstartbycheckingplug…MANWOMANMANWOMANMANLanguage1.can(could):表示“能力”，“可能性”或“許可”：Canyouanswerthisquestion?(能力)

Icannot(can’t)rideabicycle.(能力)

Canyoucometomybirthdayparty?(可能性)Youcanleavenow.(許可)初中常用的情態(tài)動(dòng)詞如下：can,may,must,haveto,should,need2.may(might):表示“請(qǐng)求”、“許可”或“可能性”：MayIborrowyourpen,please?（請(qǐng)求許可）Hemaycomewithhisyoungerbrother.（可能性）Youmaygothereatonce.(許可)Wemustworkhardforourcountry.（必須）Youmustn’tplayfootballintheclassroom.（禁止）Hemustbeonthewayhomenow.（推測）3.must有“應(yīng)該”，“必須”的意思，用于說明一個(gè)人所承擔(dān)的“責(zé)任”、“義務(wù)”，有時(shí)也表示“推測”。(1)口語中可用may代替can,表示“許可”:CanIaskyouaquestion?MayIaskyouaquestion?(2)beableto也可以表示“能力”,并強(qiáng)調(diào)“能力”。它有更多的時(shí)態(tài)。am/are/isableto;was/wereabletoshall/willbeableto;have/hasbeenabletoHeisabletoswimonethousandkilometresnow.Weshallbeabletofinishtheworkinthreedays.Notes:(3)must,haveto,should:must,mustnot--mustn’tMustIdomyhomeworkrightnow?Yes,youmust./No,youneedn’t.

must沒有時(shí)態(tài)變化,可用haveto的過去式和將來式代替。haveto“不得不”、“必須”。用于表示受客觀環(huán)境所迫，而不是出自個(gè)人意愿。否定式：don’t(doesn’t/didn’t/won’t)havetoAsthereisnobustothevillage,wehavetogothereonfoot.(4)need-需要，只用于否定和疑問句中。Heneednot(needn’t)gotoschooltoday.Musthegonow?Yes,hemust.No,heneedn’t.4.情態(tài)動(dòng)詞沒有人稱和數(shù)的變化，在各種人稱后都用同樣的形式。MissEvanscanspeakChinese.Hemaynotbeintheofficenow.Yourreportmustbefinishedtomorrow.Youneedn’taskhimforhelp.Youdon’tneedtoaskhimforhelp.Youneedn’ttoaskhimforhelp.Youdon’tneedaskhimforhelp.√√××4.______Ibringbackthecopy-booktoday?No,you____.You_____bringitbacktomorrow.A.May,can’t,mayB.Can,mustn’t,mayC.Must,needn’t,mayD.Must,needn’t,must5.Bruce_____gettothestationat9:30,butyesterdayhe_____getthereat9:00.A.may,hastoB.must,wasabletoC.may,isabletoD.must,hadtoThat_____betrue.Idon’tbelieveit.A.canB.can’tC.mustD.needn’t_____Ismokehere?No,you_____.A.May,mustn’tB.May,needn’tC.Can,can’tD.Must,can’t3._____youtellmethewaytothenearestpostoffice?A.NeedB.CouldC.MayD.Must√√√√√A1Sayingyouareableorunabletodothings(TorF)1Hicanplayfootball.2Locannotpaintpictures.3HicanspeakmorelanguagesthanLo.4HiandLocanbothdance.5Locandriveacar,buthecannotplaychess.6Hicanswim,buthecannotplaytheguitar.7Locanflyandtype.TTFTFTFA2Askquestionsandgiveanswers.CanKittyspell?

Yes,shecan.2CanKittyadd?

No,shecan’t.3CanDereksubtract?

Yes,hecan.4CanKittymultiply?

No,shecan’t.5CanDerekdivide?

No,hecan’t.B1Matchthesignswiththeinstructions.1Youmustturnleft.2Youmustbecareful.3Youmustnotsmoke.4Youmustpaytenyuan.5Youmustnotcycle.6Youmustnotturnright.7Youmustnotmakeanoise.8Youmustnotenter.hedgacbfB2problemcorner(possibleanswer)DearHopeful,Youmustnoteatsomuch.Ifyoudonotwanttofeeltired,youmustnotstayupsolate.Youmustworkhardertogethighermarksatschoolifyouhavetoothache,youmustnoteatsomanysweets.MimiCuseMayorCanandwordsintheboxtomakequestionsforBenny.1MayIcarryyourbagforyou?2MayIgetyouachair?3MayIborrowyournewbicycle?4MayIopenthedoor?5MayIswitchontheTV?borrowyournewbicyclegetyouachairswitchontheTVcarryyourbagforyouopenthedoorD1Completethenotice.

VISITTOTHECITYPOWERSTATIONThiswilltakeplaceonTuesday9thOctober.Thebuswillleaveat2.30p.m.Students_______________atheschoolentranceat2.20p.m.Students____________theirschooluniformsand_______________wellduringthevisit.They_________________anymachines.

shouldmeetshouldwearshouldbehaveshouldnottouchD1Completethenotice.

VISITTOTHECITYPOWERSTATION

Eachstudent____________________anotebookandpen,butthey________________theirbags.They_____________themintheirclassroom.Students______________questions.Thestaffofthepowerstationwillbehappy