牛津深圳版英語七下Chapter 5 Electricity課件

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?What 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 vacuum 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 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.電氣科學的電氣科學的electrical apparatus 電器電器electrical engineer Words and expressions in Reading A What do you know 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.這些年青學生們越干越有勁。這些年青學生們越干越有勁。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 tricks(a trick)on others.=Its wrong to play jokes(a joke)on others2.at last=in the end=finally 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 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.Please 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 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；結合；連結連用）連接；結合；連結 Will you connect this wire to the television?你把這根電線和電視機連上好嗎？你把這根電線和電視機連上好嗎？2.接通電話接通電話Connect me with Beijing University.給我接北京大學。給我接北京大學。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.轉化轉化,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)結在一起看電纜聯(lián)結在一起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 cablesa 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 now,BennyThere is a problem with the electricity in Bennys flat.There is a problem with the electricity in Bennys flat.An electrician came to An electrician came to deal withdeal with this problem.Listen this problem.Listen to the conversation between the electrician and to the conversation between the electrician and Bennys mother.Find out which things were on or off Bennys mother.Find out which things were on or off when the electricity stopped,and circle ON or OFF when the electricity stopped,and circle ON or OFF next to the objects.next to the objects.Before you listen,make sure you know the 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塵器器清掃清掃 properly adv.properly adv.正確地正確地,恰恰當當?shù)氐豂ron v.Iron v.熨熨,燙燙平平 plug n.plug n.插頭插頭 lights air conditioner fridge kettle washing machine television vacuum cleaner rice cooker ironLanguage 情態(tài)動詞情態(tài)動詞情態(tài)動詞不能單獨作謂語動詞，后接其它動詞情態(tài)動詞不能單獨作謂語動詞，后接其它動詞原形做謂語，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 hand in your homework at once.You mustnt talk loudly in public.3.表示請求或允許做某事表示請求或允許做某事may 或或can May I come in?Can I open the door?4.談論該做或不該做某事用談論該做或不該做某事用should,ought to 或或 shouldnt,ought not to She should do her homework first.They ought to finish the work on time.they ought not to be late for school.Notes:1、can 和和 be able to的區(qū)別的區(qū)別:be able to 有有 人稱數(shù)和時態(tài)的變化。人稱數(shù)和時態(tài)的變化。I can come tomorrow.I will be able to come tomorrow.2、在回答在回答must的疑問句時，否定回答常用的疑問句時，否定回答常用 neednt 或或dont have to表示不必，而不用表示不必，而不用 mustnt。Must we stay here?No,you need nt.(No,you dont have to.)3、must be 表示肯定的猜測，意為表示肯定的猜測，意為“一定一定”cant be 表示否定的猜測，意為表示否定的猜測，意為“不可不可能能”She must be a nurse.I saw her in the library just now.She cant be here.4、must have done 也表示肯定的猜測，也表示肯定的猜測，意為意為“一定做過一定做過”They must have cleaned the room.Its so clean.他們一定打掃過房間了，他們一定打掃過房間了，它這么干凈它這么干凈。.用適當?shù)那閼B(tài)動詞填空：。1._you swim?2.We _operate the machine last week,but we can operate it now.3.Dont worry.You _ return me this book tomorrow.4.He said if he _ask me another question.5.My grandma is ill.You _ talk so loudly here.6.I cant play with you.I _finish my homework first.7.I_ get up early tomorrow.8._you please open the window?Cancouldnt maycouldcant must mustCould9.Nobody _live without air.10._he speak Chinese?Yes,a little.11.The book _ be returned before Saturday.12._I come in?Yes,please.13.You _give up smoking at once.Its bad for your eyes.14.Excuse me._I ask you a question?15._you tell me where the station is?16._ I finish the work now?No,you _.You _ do it this evening.17.May I use your e-dictionary?Sorry,you _.I am using it now.18.Look at the ground.Its very wet.It _ have rained last night.canCanmustCan/MaymustMay/CanCan/CouldMustneedntcan/maycant must同義句改寫同義句改寫:1.You must clean your room yourself.You _ _ clean your room yourself.2.She can dance beautifully.She _ _ _ dance beautifully.3.Wash your face at once.You _ wash your face _.4.Tom couldnt find his bag.He _ not _ _to find his bag.5.Everyone ought to be here on time.Everyone _ _here on time.have to is able to must were able to should be immediately Fill in the blanks with the words given in their proper forms:1.The weather in London is _.(change)2.Please wait for me at the main _ to the museum.(enter)3.Air is _.(visible)4.The scientists found some mummies _ under the pyramids.(bury)5.Can you _ it to me again?I cant understand it.(explanation)6.I dont feel like _ football in the street.(play)7.I prefer this kind of cloth.It feels _.(smoothly)8.A:He must be in the office.B:He _be there.I saw him talking to his friend in the classroom just now.(can,may,must)changeableentranceinvisibleburiedexplainplayingsmooth cant 9.The rain stopped us from _ to school.(go)10.When he came into the office,he found his staff busy _.(work)11.Dont _ out of the window.Its dangerous.(lean)12.These wires are _ to the cables buried under the ground.(connection)13.Thats not a bad _.(explain)14.Electricity comes from a _ station.(powerful)15.Long ago,when people died,they are usually _.(bury)16.Dont touch the wire.You will get an _ shock.(electricity)17.Tom is an _ boy.He never feels tired.(energy)18.There was an _ repairing the electric appliance.(electricity)goingworkingleanconnectedexplanationpowerburiedelectricalenergeticelectriciankeep their desksbe politedressstandlean out ofread comicssleep1,2,3,4,5,6,7,8