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1、Chapter 5 ElectricityTask 1 What do we know about energy?What is it?Its the power that makes things work.Lead in What happens if a machine doesnt have energy?It doesnt work.Task 2Invisible 看不見的看不見的flow through a wire,like waterWhat do we know about electricity?Can we change electricity into energy?W

2、hat kinds?Task 3 Heat energy Movement energy Light energy Sound energy Look at the following things.What kind of energy do they produce?Discussion:Light energyLight energySound energyMovement energyHeat energyLight energyMovement energyHeat energyMovement energy air conditioner washing machine vacuu

3、m cleaner rice cooker television iron fridge fan micro-wave oven recorder radiotorchkettle How many home appliances can you tell us in our life?What kinds of energy do they produce?Where does electricity come from?Task 31.Through thin wires.2.Be connected to cables buried under the ground.3.A power

4、station.electricity n.電電 electrician n.電工電工There is a problem with the electricity in Toms flat.An electrician has come to deal with it.electric a.電的電的 electric storm electric shock electrical a.電氣科學(xué)的電氣科學(xué)的electrical apparatus 電器電器electrical engineer Words and expressions in Reading A What do you kno

5、w about:change v/n.變化變化We cant see electricity,but we can change it into energy.Great changes have taken place in Shenzhen since 1980.changeable a.The weather is changeable on top of the mountain.n.找頭；（找回的）零錢找頭；（找回的）零錢Here is your change.energy n.Young people usually have more energy than the old.年輕

6、人通常比老年人有活力。年輕人通常比老年人有活力。energetic a.1.He is an energetic boy;he enjoys sports.2.The more the young students worked,the more energetic they became.這些年青學(xué)生們越干越有勁。這些年青學(xué)生們越干越有勁。abaccccontainpolitelyin a wayflows1.trick:v/n 戲弄戲弄,欺騙欺騙Its wrong to trick others.=Its wrong to fool others=Its wrong to play tri

7、cks(a trick)on others.=Its wrong to play jokes(a joke)on others1.2.at last=in the end=finally2.I finished my work at last.I finished my work in the end .I finished my work finally.3.flow through Elctricity flows through a wire.Its like water,in a way.Words and expressions in Reading B:4.look like=be

8、 like 1.He looks like his father.=He is like his father.2.-Whats he like?=What does he look like?-He is short and fat.5.in a way(partly)在某種程度上在某種程度上,稍稍稍稍In a way,I agree with him.Some of his ideas are rightby the way By the way,can you tell me when we will leave?in the way The table is in the way.Pl

9、ease move it.on the way On the way to school,I saw Ken.in this way I have collected many stamps in this way.6.explain v.explanation n.Can you explain it to me?=Can you give an explanation about it to me?7.form v.組成組成 n.形式形式1.Mike formed a football team in his class with his classmates last term.2.We

10、 can change it into different forms of energy.3.She has a tall graceful form.她有著高大優(yōu)雅的外形。她有著高大優(yōu)雅的外形。8 be connected to 1.The wires in our flat are connected to cables buried under the street.2.Hong Kong and Shenzhen are connected by Luohu Bridge.connect v.1.（常與（常與to,with連用）連接；結(jié)合；連結(jié)連用）連接；結(jié)合；連結(jié) Will you

11、 connect this wire to the television?你把這根電線和電視機(jī)連上好嗎？你把這根電線和電視機(jī)連上好嗎？2.接通電話接通電話Connect me with Beijing University.給我接北京大學(xué)。給我接北京大學(xué)。9 bury v.buried buried When people died,they are usually buried.10.cable n.電纜電纜 wire:n.電線電線Computers are connected with each other by means of cables.11.contain v.包含；容納；裝有包

12、含；容納；裝有Beer contains alcohol.啤酒含有酒精。啤酒含有酒精。The envelop contains some photos of her family.Phrases:1.轉(zhuǎn)化轉(zhuǎn)化,變成變成 2.戲弄某人戲弄某人 3.最后最后4.看上去很傻看上去很傻 5.流經(jīng)流經(jīng) 6.某種意義上某種意義上 7.看電纜聯(lián)結(jié)在一起看電纜聯(lián)結(jié)在一起8.電燈泡電燈泡 9.撓頭撓頭 10.不同形式的能量不同形式的能量11.發(fā)電站發(fā)電站 change intotrick sb at lastlook foolishflow throughin a way be connected to cab

13、lesa light bulb scratch ones headdifferent forms of energya power stationme=BennyIt=electricityit=electricityThey=cablesThey=batterieswirecablestreetpower stationYesI was able to trick Daisy at lastNOWe cant see electricity,but we can change it into different forms of energyNOWho is looking foolish

14、now,BennyThere is a problem with the electricity in Bennys flat.An There is a problem with the electricity in Bennys flat.An electrician came to electrician came to deal withdeal with this problem.Listen to the this problem.Listen to the conversation between the electrician and Bennys mother.Find co

15、nversation between the electrician and Bennys mother.Find out which things were on or off when the electricity stopped,out which things were on or off when the electricity stopped,and circle ON or OFF next to the objects.and circle ON or OFF next to the objects.Before you listen,make sure you know t

16、he following Before you listen,make sure you know the following words:words:Vacuum v.Vacuum v.用用真真空吸空吸塵器器清清掃 properly adv.properly adv.正確地正確地,恰恰當(dāng)當(dāng)?shù)氐豂ron v.Iron v.熨熨,燙平平 plug n.plug n.插插頭 lights air conditioner fridge kettle washing machine television vacuum cleaner rice cooker ironLanguage 情態(tài)動(dòng)詞情態(tài)動(dòng)詞情態(tài)動(dòng)詞不能單獨(dú)作謂語動(dòng)詞，后接其它動(dòng)詞情態(tài)動(dòng)詞不能單獨(dú)作謂語動(dòng)詞，后接其它動(dòng)詞原形做謂語，沒有人稱和數(shù)的變化。原形做謂語，沒有人稱和數(shù)的變化。1.表示能夠或不能做某事用表示能夠或不能做某事用can 或或 cant A bird can fly.Fish cant live without water.2.告訴人們必須或禁止做某事用告訴人們必須或禁止做某事用must或或mustnt You must