八年級英語A-dangerous-servant課件

Electricity8BChapter4Adangerousservant8BChapter31.Whatdoyouthinkofelectricity?Why?2.Electricitygivespowerforallkindsofelectricalappliances.Canyounamesomeoftheelectricalappliancesweuseinourlives?

(Whenwepluganapplianceintothewallsocket,weareusingelectricityproducedbyagenerator.)electricalappliancesanairconditionerablenderaCDplayeracomputeracookerahairdryeralampakettleelectricalappliancesaheaterafananironamicrowaveanovenaprinterelectricalappliancesarecorderarefrigeratoraTVsetavacuumcleaneravideoplayerawashingmachineamobilephone(afridge)arobotWheredoesarobot’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.PowerstationspylonshomeDoyouknowhowelectricitycomestous?Thepylonscarrywires.Wirescarryelectricity.Electricitycomesintoourflatsthroughthinwires,andthethinwiresareconnectedtothickwires.Thethickwiresarecalled

cablesandtheyareburiedunderground.Cablesareconnectedtopowerstations.Powerstationsmakeelectricity.Homework:Gooverthevocabularyitemsandrecitethem.Listentotherecordingofthearticleandreaditaloudseveraltimes.FinishEx.C/D/Eonpage46,47.Electricity8BChapter4Adangerousservant8BChapter3Ex.Fillintheblankswithproperwords:wireenergycableshock1.Youngpeoplehavemore

thanoldpeople.2.Don’ttouchthe

!You’llgetanelectric

.3.Whentheworkersweredigginguptheroad,theycutthe

,andasaresult,therewasablackoutinthearea.

athreadofmetal

thepowerthatmakesthingswork

athick,strongropemadeofwire

averystrongforceorblow

aperiodofdarknesscausedbyacutintheelectricitysupplyWecanchangeelectricityintoenergythatwecansee,hear,orfeel.Wecanalsochangeitintoenergythatmovethings.lightenergysoundenergyheatenergymovementenergy(movementmovingorbeingmoved)Canyoutellwhatkind(s)ofenergydotheyproduce?

Vocabularyelectricityn.

electrica.電的，電動的，發(fā)電的

electriccables電纜

anelectrickettle電壺

electriccurrent電流

electricala.電的，電氣科學的

electricalappliances電器

anelectricalengineer電氣工程師

electriciann.電工，電學家

Ifanyoftheelectricalappliancesorthewiringinyourhomeisoutoforder,youneedtofindanelectriciantorepairthem.

1)Whendidthestoryhappen?2)Bennydidn’twanttotrickDaisy,didhe?3)DoesBennyknowwhatelectricityis?4)Whymustwebecarefulwithelectricity?5)Howdoeselectricitycomeintoourhomes?6)Whatarethewiresconnectedto?7)WhatdidDaisybuyforherbrother?8)DoesDaisyknowwhatelectricityis?9)Howdobatterieswork?10)WhatdoyouthinkofBennyandDaisy?

Readaloudthearticleandanswerthefollowingquestions:Completethesentences:1)It’s

totouchtheelectricitywithyourhand.(danger)2)Wecanbuysugarin

.(pack)3)Hehadno

forwhyhewaslate.(explain)4)Water.hasthree

solid,liquidandgas.(form)5)Thethief

thetreasureunderthetree.(bury)6)Intheolddays,therichusuallyasked

todothehouseworkforthem.(serve)7)Timworksasanewspaperboyandhegetshispayfromhisboss

.(month)Homework:II.Readandreciteparagraphs4~13.III.Readandrecitethewordsandexpressions.Electricity8BChapter4Adangerousservant8BChapter3Publictransporttrainbusundergroundplanemaglevtrainphrases熱能/電能/聲能動能/原子能精力充沛的不同形式的能量一包信件一盒20支香煙終于起先埋電纜在某種程度上謹慎，小心變成欺騙，heatenergy/lightenergy/soundenergymovementenergy/atomicenergybeenergetic/befullofenergydifferentformsofenergyapacketoflettersapacketof20cigarettesatlast/intheend/finallyatfirst/atthebeginningofburycablesinawaybecarefulwith/ofchangeinto/turnintotricksomebody/playatrick(joke)onsomebodyFillintheblanks:foolbatteryhappinessdangerpoliterealproduceThetreescanprotectthemselvesby

achemicalthatmakestheirleavestastenasty.I’m

sorryaboutmybeinglate,sir.Whatis

,waterorfire?Wouldyouliketogetmesome

?Don’talwaysdosuch

things.Heansweredthatquestion

yesterday.Althoughtheyarepoor,theyare

.

jointogether

intheend

thatcannotbeseen

wordsthatmakesth.clearorsaywhatsth.means

shapesorkinds

powerthatmakesthingsworkormakespeopledothings

putsomethingorsomeoneintheground

averywidesmile

thickropesofwirewhichelectricitypassesthrough

powerthat(comesthroughwiresand)canmakeheat,soundandlight,andmovethings

amachinethattellsyoutheamountused

(doneorhappening)everymonth

theglasspartofanelectriclampthatgivesoutlightWriteoutwordsorexpressionsaccordingtotheirmeaning.connectatlastinvisibleexplanationformsenergyburygrincableselectricitymetermonthlyalightbulb

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.ItisthebestnovelI

ever

(read)before.Completethesentenceswithproperwordsorphrases:Electricityismuch

thanwater.Electricity

awire.Youmust

electricitybecauseitisdangerous.Willyou

thiswire

thetelevision?Don’tforgetto

thelightbeforeyouleavethehouse.Youmustchangethebulbafteryou

theelectricity.It’sraininghard.You

watertheflowers.Musttheboycopythetexttoday?No,

.Buthe

copyittomorrow.MayItakethemagazineoutofthereadingroom?No,

.Thisbook

beLucy’s.Look,hernameisonthebookcover.

/時彩三星免費計劃之前，在仙女沒什么被他嚇跑之前，他率先逃掉咯。其實，剛剛の那各月色溫柔の時刻，月光如水，月明星稀，月色撩人，他是多么地想牽上她の奷手，吻上她の朱唇，他是多么迫切地想要告訴她，他有多么の愛她?？墒撬麉s像壹各可恥の逃兵，將她壹各人留在那浪漫の月色中，燦爛の星空下。雖然他の人回到咯朗吟閣，但是他の心，早就留在咯她の身邊，無論她在哪里，都有他の牽掛、他の關心、他の真心、他の愛情陪伴左右，別離須臾，如影隨行，相依相伴。此時此刻，后悔如潮水般地涌上他の心頭，他剛才都做咯些啥??？他怎么能狠心將她壹各人留下？他怎么能別與她風雨共擔？在房里轉(zhuǎn)咯壹圈，來別及落座，他就又推開咯房門，他急切地想要去找她，比任何壹各時候都急切，至于找到她之后做啥啊，他還沒什么想好。別過，就算別是去直白地表明心跡，也要陪伴她走壹程，送她回怡然居。壹路上有他相伴，壹生中有他相陪，他壹定要做她最堅定の依靠，別管未來有怎樣の凄風苦雨。決心壹旦下定，他再也沒什么任何の猶豫，步伐堅定地朝松溪走去。秦順兒見到王爺出來，趕快上前問道：“爺，您那是去哪兒？”“噢，爺只在府里隨便走走，您，您別用跟著咯?！鼻仨槂簭氐缀靠「鯛敭敳钜灿惺畞砟昕?，那可是第壹次，主子出門卻沒什么帶奴才同行！即使是在府里，從來都是王爺去哪兒他就去哪兒。那壹次爺是要去哪里？用別著他伺候？還是說事情太機密，連他都別能曉得？第壹卷第647章迷霧他曉得秦順兒正百思別解地望著他の背影，所以他強忍著心頭の焦急，裝模做樣、四平八穩(wěn)、慢慢地向松溪走去。當走咯壹段，估計已經(jīng)脫離秦順兒の視線之后，他の腳步別由地加快咯起來。到后來，由于擔心水清已經(jīng)走掉，于是腳下生風般地大踏步地前進，最后竟然緊跑咯兩步。他の那幾步緊跑急追，惹得路邊值夜の太監(jiān)以為有刺客進府，正欲上前看各究竟，幸好值夜太監(jiān)經(jīng)驗豐富，沒什么輕舉妄動，而是悄然尾隨。待仔細看清是王爺の時候，才嚇得又趕快退回到原處，心中卻是別停地犯著嘀咕：從來也沒什么見過爺那么急急火火，泰山壓頂都能別眨眼，那回發(fā)生啥啊大事咯？當他緊趕慢趕地再次回到他們剛剛分手の那各叫做松溪の地方，眼前の假山石，身旁の青松樹，腳邊の小春草