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1、Unit 4 Electricityelectricity n.电电 electrician n.电工电工There is a problem with the electricity in Toms flat.An electrician has come to deal with it.electric a.电的电的 electric storm electric shock electrical a.电气科学的电气科学的electrical apparatus 电器电器electrical engineer Words and expressions in Reading A What
2、do you know about:change v/n.变化变化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.找头；（找回的）零钱找头；（找回的）零钱Here is your change.energy n.Young people usually have more energy than
3、the old.年轻人通常比老年人有活力。年轻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.这些年青学生们越干越有劲。这些年青学生们越干越有劲。abaccccontainpolitelyin a wayflows1.trick:v/n 戏弄戏弄,欺骗欺骗2.Its wrong to trick others.=Its wrong to fool others3.=Its wro
4、ng to play tricks(a trick)on others.=4.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
5、.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)在某种程度上在某种程度上,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
6、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.组成组成 n.形式形式1.Mike formed a football team in his class with his classmates l
7、ast term.2.We can change it into different forms of energy.3.She has a tall graceful form.她有着高大优雅的外形。她有着高大优雅的外形。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.（常与常与to,with连用）连接；结合；连结连用）连接；结合
8、；连结 Will you connect this wire to the television?你把这根电线和电视机连上好吗？你把这根电线和电视机连上好吗？2.接通电话接通电话Connect me with Beijing University.给我接北京大学。给我接北京大学。9 bury v.buried buried When people died,they are usually buried.10.cable n.电缆电缆 wire:n.电线电线Computers are connected with each other by means of cables.11.contain
9、 v.包含；容纳；装有包含；容纳；装有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.转化转化,变成变成 2.戏弄某人戏弄某人 3.最后最后4.看上去很傻看上去很傻 5.流经流经 6.某种意义上某种意义上 7.看电缆联结在一起看电缆联结在一起8.电灯泡电灯泡 9.挠头挠头 10.不同形式的能量不同形式的能量11.发电站发电站 change intotrick sb at lastlook foolishflow throughin a way be conn
10、ected 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 look
11、ing foolish now,BennyThere is a problem with the electricity in BennyThere is a problem with the electricity in Benny s flat.s 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 conversa
12、tion between the electrician and BennyBenny s mother.Find out which things were on or off s 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 s
13、ure you know the following Before you listen,make sure you know the following words:words:Vacuum v.Vacuum v.用用真真空吸空吸尘器器清清扫 properly adv.properly adv.正确地正确地,恰恰当当地地Iron v.Iron v.熨熨,烫平平 plug n.plug n.插插头 lights air conditioner fridge kettle washing machine television vacuum cleaner rice cooker ironLang
14、uage 情态动词情态动词情态动词不能单独作谓语动词，后接其它动词情态动词不能单独作谓语动词，后接其它动词原形做谓语，没有人称和数的变化。原形做谓语，没有人称和数的变化。1.表示能够或不能做某事用表示能够或不能做某事用can 或或 cant2.A bird can fly.3.Fish cant live without water.2.告诉人们必须或禁止做某事用告诉人们必须或禁止做某事用must或或mustnt You must hand in your homework at once.You mustnt talk loudly in public.3.表示请求或允许做某事表示请求或允许
15、做某事may 或或can May I come in?Can I open the door?4.谈论该做或不该做某事用谈论该做或不该做某事用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的区别的区别:be able to 有有 人称数和时态的变化。人称数和时态的变化。I can come tom
16、orrow.I will be able to come tomorrow.2、在在回答回答must的疑问句时，否定回答常用的疑问句时，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 表示肯定的猜测，意为表示肯定的猜测，意为“一定一定”cant be 表示否定的猜测，意为表示否定的猜测，意为“不可能不可能”She must be a nurse.I saw her in the library just now
17、.She cant be here.4、must have done 也表示肯定的猜测，也表示肯定的猜测，意为意为“一定做过一定做过”They must have cleaned the room.Its so clean.他们一定打扫过房间了，他们一定打扫过房间了，它这么干净它这么干净。.用适当的情态动词填空：。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
18、 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
19、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
20、the ground.Its very wet.It _ have rained last night.canCanmustCan/MaymustMay/CanCan/CouldMustneedntcan/maycant must同义句改写同义句改写: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
21、.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
22、 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 offi
23、ce.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.(l
24、ean)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