A_dangerous_servant_课件.ppt

Electricity 8BChapter4 Adangerousservant 8BChapter3 1 Whatdoyouthinkofelectricity Why 2 Electricitygivespowerforallkindsofelectricalappliances Canyounamesomeoftheelectricalappliancesweuseinourlives Whenwepluganapplianceintothewallsocket weareusingelectricityproducedbyagenerator electricalappliances anairconditioner ablender aCDplayer acomputer acooker ahairdryer alamp akettle electricalappliances aheater afan aniron amicrowave anoven aprinter electricalappliances arecorder arefrigerator aTVset avacuumcleaner avideoplayer awashingmachine amobilephone afridge arobot Wheredoesarobot senergycomefrom Itsenergycomesfromelectricity Wheredoesourenergycomefrom Energyisthepowerthatmakesthingswork Perhapswithoutelectricityourliveswillnotbeinteresting Nowletustalkaboutelectricity Whatisit Electricityisthepowerwhichisproducedbyrubbing friction byamachinecalledageneratororbychemicalmeans e g abattery Canweseeit No it sakindofenergythatwecannotsee It sinvisible Canwetouchit No wecan t Wemaygetanelectricshock It sdangerous Powerstations pylons home Doyouknowhowelectricitycomestous Thepylonscarrywires Wirescarryelectricity Electricitycomesintoourflatsthroughthinwires andthethinwiresareconnectedtothickwires Thethickwiresarecalledcablesandtheyareburiedunderground Cablesareconnectedtopowerstations Powerstationsmakeelectricity Homework Gooverthevocabularyitemsandrecitethem Listentotherecordingofthearticleandreaditaloudseveraltimes FinishEx C D Eonpage46 47 Electricity 8BChapter4 Adangerousservant 8BChapter3 Ex Fillintheblankswithproperwords wireenergycableshock 1 Youngpeoplehavemorethanoldpeople 2 Don ttouchthe You llgetanelectric 3 Whentheworkersweredigginguptheroad theycutthe andasaresult therewasablackoutinthearea athreadofmetalthepowerthatmakesthingsworkathick strongropemadeofwireaverystrongforceorblowaperiodofdarknesscausedbyacutintheelectricitysupply Wecanchangeelectricityintoenergythatwecansee hear orfeel Wecanalsochangeitintoenergythatmovethings lightenergysoundenergyheatenergymovementenergy movement movingorbeingmoved Canyoutellwhatkind s ofenergydotheyproduce Vocabulary electricityn electrica 电的 电动的 发电的electriccables电缆anelectrickettle电壶electriccurrent电流electricala 电的 电气科学的electricalappliances电器anelectricalengineer电气工程师electriciann 电工 电学家Ifanyoftheelectricalappliancesorthewiringinyourhomeisoutoforder youneedtofindanelectriciantorepairthem 1 Whendidthestoryhappen 2 Bennydidn twanttotrickDaisy didhe 3 DoesBennyknowwhatelectricityis 4 Whymustwebecarefulwithelectricity 5 Howdoeselectricitycomeintoourhomes 6 Whatarethewiresconnectedto 7 WhatdidDaisybuyforherbrother 8 DoesDaisyknowwhatelectricityis 9 Howdobatterieswork 10 WhatdoyouthinkofBennyandDaisy aloudReadthearticleandanswerthefollowingquestions Completethesentences 1 It stotouchtheelectricitywithyourhand danger 2 Wecanbuysugarin pack 3 Hehadnoforwhyhewaslate explain 4 Water hasthree solid liquidandgas form 5 Thethiefthetreasureunderthetree bury 6 Intheolddays therichusuallyaskedtodothehouseworkforthem serve 7 Timworksasanewspaperboyandhegetshispayfromhisboss month Homework II Readandreciteparagraphs4 13 III Readandrecitethewordsandexpressions Electricity 8BChapter4 Adangerousservant 8BChapter3 Publictransport train bus underground plane maglevtrain phrases 热能 电能 声能动能 原子能精力充沛的不同形式的能量一包信件一盒20支香烟终于起先埋电缆在某种程度上谨慎 小心变成欺骗 heatenergy lightenergy soundenergymovementenergy atomicenergybeenergetic befullofenergydifferentformsofenergyapacketoflettersapacketof20cigarettesatlast intheend finallyatfirst atthebeginningofburycablesinawaybecarefulwith ofchangeinto turnintotricksomebody playatrick joke onsomebody Fillintheblanks foolbatteryhappinessdangerpoliterealproduceThetreescanprotectthemselvesbyachemicalthatmakestheirleavestastenasty I msorryaboutmybeinglate sir Whatis waterorfire Wouldyouliketogetmesome Don talwaysdosuchthings Heansweredthatquestionyesterday Althoughtheyarepoor theyare jointogetherintheendthatcannotbeseenwordsthatmakesth clearorsaywhatsth meansshapesorkindspowerthatmakesthingsworkormakespeopledothingsputsomethingorsomeoneinthegroundaverywidesmilethickropesofwirewhichelectricitypassesthroughpowerthat comesthroughwiresand canmakeheat soundandlight andmovethingsamachinethattellsyoutheamountused doneorhappening everymonththeglasspartofanelectriclampthatgivesoutlight Writeoutwordsorexpressionsaccordingtotheirmeaning connect atlast invisible explanation forms energy bury grin cables electricity meter monthly alightbulb Choosetherightwordstocompletethesentences Playingwithfireisvery danger dangerous Cablesareconnected with to apowerstation Everyone can must keepquietinthelibrary Youneed alotof many energytoplaysquash Wegetelectricityfromthepowerstation across through wiresandcables Thestarsare visible invisible whenit scloudy Peopleusuallypaytheirrent month monthly Hewaitedforthebusforanhour In At theend itarrived Ididn tremember what how Mr Leehadaskedmetodo Noonecanbesure whatwillmanlooklike whatmanwilllooklike inamillionyears Fillintheblankswiththeverbsintheirproperforms You dbetter not take itaway Thepenalways remind meofmycousin becauseitwassenttomebyhim Thepolicemanranuptothethiefand catch himbythearm Ourparentstellus notlaugh atothers Thetwocities connect byanewrailway Didyouhearwhatthechild explain toyou Theenergyoffallingwatercanbeused produce electricity ItisthebestnovelIever read before Completethesentenceswithproperwordsorphrases Electricityismuchthanwater Electricityawire Youmustelectricitybecauseitisdangerous W