文本讲义参考unit3-readingi

1NatureandenvironmentReading(I)Electricity3CartoontalkWhatdoyouknowabout…?BeforeyoureadReadCONTENTSPAGECartoontalk2-1I’maboy.Myenergycomesfromfood.12I’marobot.Myenergycomesfromelectricity.2-212What’sinHi’shands?WhatareHiandLotalkingabout?WheredoesLo’senergycomefrom?What’stheweatherlikeinthecartoon?Whatwillthisunitprobablybeabout?Achickenlegandanicecream.Wheretheirenergycomesfrom.Electricity.It’srainy.Electricity.Whatdoyouknowabout…?A1Doyouknowthesethings?Whatcantheydo?11-112345678910A2Whatcommonpointsarethereamongthem?Theyalluseelectricity.Theychangeelectricityintootherformsofenergy.11A3Whatformsofenergycantheychange

electricityinto?11-2lightenergyheatenergymovingenergysoundenergy12345678910111234567811-3BWecanchangeelectricityintodifferentkinds

ofenergy.Matchthekindsofenergyintheboxwiththethingsinthepictures.Somethingsmayhavemorethanonekindofenergy.Thefirstonehasbeendoneforyou.12345678910111234567811-4heatenergymovingenergylightenergysoundenergy________________________________________________________________________________________________soundenergysoundenergyheatenergylight&soundenergylightenergymoving&soundenergymovingenergyheatenergy1234567891011BYouwillwatchthreeshortclipsofvideo.

Attheendofeachclip,youwillseeaquestion.Watcheachclipcarefullyandtrytoanswerthequestions.Trytoremembereveryitemappearedinthevideo.11-5123456789101111-6123456789101111-7123456789101111-8123456789101111-9123456789101111-10123456789101111-111234567891011Beforeyouread4-11234AAnswerthefollowingquestions.Whatisenergy?Howdoyoufeelifyoudonothaveenergy?Ifyoudonothavealotofenergy,whatcanyoudotoincreaseyourlevel?Whathappensifamachinedoesnothaveenergy?Howcanwesupplymachineswithenergy?Thepowerthatmakesthingswork.Tiredorsleepy.Rest,sleep,eathealthyfoodandexerciseregularly.Itdoesn’twork.Plugthemintoanelectricsocket;usebatteriesorsolarpanels.B1Beforeyoureadthestoryonthenextpage,

lookatthetitle,thefirstandlasttwoparagraphsandthepictures.1234-241234-34Oneevening,Daisysaid,‘I’mgoingtobuyapacketofsweets.Doesanyonewantanything?’Benny,Daisy’sbrother,said,‘Yes.Canyougetmeapacketofelectricity,please?’Daisyasked,‘Didn’tyouknowthat,Benny?’Mumsaid,‘Who’slookingfoolishnow,Benny?’ThefirsttwoparagraphsThelasttwoparagraphsB2Now,trytoanswerthesequestions.1234-44Whatdidthegirlwanttobuy?Whoislookingfoolish?Whoorwhatistheservant

inthetitle?

(Aservantusuallymeanssomeonewhodoeshouseworkforothers.)Whyistheservantinthetitledangerous?Apacketofsweets.Benny.Electricity.Ifnotusedcarefully,electricitycanhurtus.Read4-112345Oneevening,Daisysaid,‘I’mgoingtobuyapacketofsweets.Doesanyonewantanything?’Benny,Daisy’sbrother,said,‘Yes.Canyougetmeapacketofelectricity,please?’Daisysaid,‘OK,’andwentout.Bennylaughed,‘Ha!Ha!I’vetrickedDaisyatlast.Shedoesn’tevenknowwhatelectricityis.Shethinksthatshecanbuyitinpackets,likesweets!She’llreallylookfoolish.’Mumsaid,‘Doyouknowwhatelectricityis?’Bennysaid,‘Yes.Electricityflowsthroughawire.Ameter

measurestheamountyouuse,andyougetabillforitmonthly.It’slikewater,

inaway.’‘That’snotabadexplanation,’saidDad,

‘althoughelectricityismuchmoredangerous

thanwater.Electricityisagoodservant,

butadangerousone.Youmustalways

becareful

withit.Canyoutellmewhatit

lookslike?’Bennyscratchedhishead.4-212345Dadsaid,‘Nobody’severseenelectricity.It’sinvisible.

Butwecanchangeitintodifferentformsofenergythatwecansee,hearorfeel.Canyouthinkofanexample?’Bennysaid,‘Light!Thelightinalightbulb.’Mumsaid,‘That’sright.Doyouknowwhereelectricitycomesfrom?’Bennysaid,‘Well,itcomesintoourflatthroughthinwires,andtheseareconnectedtothickwiresthatareburiedunderthestreet.’‘Wecallthethickwirescables,’saidDad.‘Whataretheyconnected

to?’‘Apowerstation,’saidBenny.4-312345Daisythencameback.Bennyaskedpolitely,‘MayI

havemypacketofelectricity,please?’Therewasagrinonhisface.‘Yes,youmay,’saidDaisy.‘Hereitis.’Bennysaid,‘Butthesearebatteries!’Daisysaid,‘That’sright.’‘But…but…,’saidBenny.‘Daisy’sright,’saidDad.‘They’repacketsthatcontainelectricity.Thechemicalsinsideproduceelectricity.’Daisyasked,‘Didn’tyouknowthat,Benny?’Mumsaid,‘Who’slookingfoolishnow,Benny?’4-41234ConsolidationWorkbook8B,page17.electricity/ɪˌlek'trɪsətɪ/n.powerthatcanmakeheatandlight,andmakethingsworkOurcompanyisabiguserofelectricityinthisarea.Don’tleavethelightson―itwasteselectricity.servant/'sɜ:vənt/n.apersonwhoworksinanotherperson’shouse,doingworklikecookingandcleaningFireandwatermaybegoodservants,butbadmasters.Apoliticianshouldbeaservantofthepeople.trick/trɪk/v.dosomethingthatisnothonesttogetwhatyouwantfromsomebodyI’dbeentrickedandIfeltstupid.

Hemanagedtotrickhiswaypastthesecurityguards.trick/trɪk/n.acleverplanthatmakesomebodybelievesomethingthatisnottrueTheyhadtothinkofatricktogetpasttheguards.Thekidsarealwaysplayingtricksontheirteacher.foolish/'fu:lɪʃ/adj.stupid;sillyIwasfoolishenoughtobelievewhatJefftoldme.Howcouldshehavebeensofoolishastofallinlovewithhim?wire/'waɪə(r)/n.alongpieceofverythinmetalTheropewasnotstrongenough,soweusedwire.meter/'mi:tə(r)/n.amachinethatmeasuresorcountssomethingAmancametoreadthegasmeter.Thecabdriverleftthemeterrunningwhilehewaitedforus.measure/'meʒə(r)/v.findthesize,weightoramountofsomebodyorsomethingHe’sgonetobemeasuredforanewsuit.Adipstickisusedtomeasurehowmuchoilisleftinanengine.bill/bɪl/n.apieceofpaperthatshowshowmuchmoneyyoumustpayforsomethingWeranupamassivehotelbill.Shealwayspaysherbillsontime.monthly/'mʌnθlɪ/adv.thathappensorcomeseverymonthShegetspaidmonthly.Somemagazinescomeoutmonthly.inawaypartlyHowever,inaway,Iratherlikehim.Iagreewithhiminaway.Someofhisideasareright.explanation/ˌeksplə'neɪʃn/n.tellingsomebodyaboutsomethingsothattheyunderstandit,orgivingareasonforsomething‘Ihadtoseeyou,’hesaid,bywayofexplanation.

Shedidn’tgiveaveryadequateexplanationforbeinglate.

careful/'keəfl/adj.thinkingaboutwhatyouaredoingsothatyoudonotmakeamistakeorhaveanaccidentHewascarefultokeepoutofsight.Becarefulnottowakethebaby.becarefulwithtakecareof;mindAlwaysbecarefulwithfire.Itcanhelpyouaswellashurtyou.Youmustbecarefulwithalltheelectricalappliancesathome.scratch/skræʧ/v.moveyourfingernailsacrossyourskinHescratchedtheinsectbiteonhislegwithhisnails.Thedogscratcheditselfbehindtheear.invisible/ɪn'vɪzəbl/adj.thatcannotbeseenItwassocloudythatthetopofthemountainwasinvisible.WhenIcalled,theirheadwasinvisible.bulbtheglasspartofanelectriclampthatgiveslight