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1、12345目錄目錄Lead-inPre-LearningWhile-LearningPost-LearningReviewPart I Lead-inGetting ready1.What are Hi and Lo talking about?They are talking about the source of energy.2.Whats in His hands?An ice cream in his left hand and a chicken leg in the other.3.Whats the weather like in the cartoon?Its stormy.

2、4.Where does Los energy come from?Electricity.5.What will this unit probably be about?Electricity.Where does the boys energy come from?It comes from food.What about the robot?Its energy comes from electricity.What is energy?ItgivespowertomakepeopleorthingsworkItgivespowertomakepeopleorthingswork.Ene

3、rgy,electricity and batteriesEnergy Energy is the ability to do some kind of work.That can make things move,heat things up,or make light or sound.能量是做功的能力，它可以使物體運動、升溫或者發(fā)出光和聲音。Electricity Electricity is a type of energy.We use it to power things like lights,heaters,TVs,and computers.Some buses and tr

4、ains work on electricity too.電是一種能量。電燈、暖風(fēng)、電視和電腦等電器依靠電來工作。有的汽車和火車也是依靠電來驅(qū)動的。Electrical appliances have metal wires inside them.Electricity works by flowing in a current,along the wires.The electrical energy flowing through things makes them work.電器的內(nèi)部都有金屬導(dǎo)線。電以電流的形式沿導(dǎo)線流動，由此形成的電能流經(jīng)用電器，使其工作。BatteryAbatte

5、rycontainsastoreofchemicals.Itturnsenergyfromthechemicalsintoelectricalenergy.Whenthechemicalenergyisusedup,thebatteryrunsoutofelectricalenergy.Itstopsworking.電池內(nèi)含有多種化學(xué)物質(zhì)。它能把化學(xué)物質(zhì)中的能量轉(zhuǎn)化成電能。當(dāng)化學(xué)能耗盡后，電池也就沒有了電能，電池就不能用了。Part II Pre-Learningpower stationmake electricitycablewirelight bulbDo you know how el

6、ectricity comes to our homes?BrainstormingFill in the blanks with given wordswireenergycablebattery1.Modern people use more _ than people in the past.2.This toy car uses _ for energy.3.Dont touch that _!It is very dangerous.4.We dont know who cut the _,but we cant use the telephone at the moment.ene

7、rgybatterieswirecablesIn our daily lives,what kinds of things needs electricity?A.What do you know about.?There are different ways of producing electricity.Write the correct words in the blanks.solar powerwater powerwind powerwind powerwater powersolar powerLook at the photos and the title of the st

8、ory on page 73.Then answer the questions below.Before you read1.What did the girl buy?2.What do you think the story may be about?a.Where electricity comes from.b.What electricity is like.c.What we use electricity for.d.How we can use electricity safely.She bought some batteries./Some batteries.Readi

9、ngFor the first part of the text.()Daisy was going to buy a packet of sweets.()Benny didnt reply to his sister because he wanted nothing.()Benny didnt think Daisy could buy electricity in packets like sweets.()Benny wanted to make Daisy look foolish.()Mum was happy about that.1.Read the first part o

10、f the text,tell whether the following statements are true or false.Correct the statement if its false.TTTFFMum was unhappy and she asked Benny not to say that.Benny asked Daisy to get him a packet of electricity.Daisy was going to buy _.Benny asked Daisy to get him _.Benny _ think Daisy _ buy electr

11、icity in packets like sweets.Benny wanted to make Daisy _.Mum was _ and she asked Benny_.2.Can you retell the first part of the text?a packet of sweetsa packet of electricitydidnt couldlook foolishunhappynot to say thatFor the second part of the text.3.According to the second part,answer the followi

12、ng questions.1.How does electricity come into our flats?Electricity comes into our flat through thin wires.2.What is it like?Its like water,in a way.3.What are the wires connected to?They are connected to cables under the street.4.What are the cables connected to?They are connected to a power statio

13、n.5.What does electricity give us?It gives us power.For the third part of the text.What did Daisy buy?Was she right?Why?Batteries.Yes,she was.Because the chemicals inside batteries produce electricity.According to the third part,answer the following questions.Second ReadingRepeat the text after the

14、tape 1.Work in groups.Discuss how electricity comes into our home.Complete the flow chart.Electricity is produced in a power station.Electricity travels in cables under the street.Electricity comes into our flat through thin wires.Electricity changes into light energy in light bulbs.2.How does elect

15、ricity comes into our home?Try to explain it according to the flow chart.First,Then,Next,Finally,electricity comes from a power station.it travels in cables under the street.it comes into our flat through thin wires.it changes into light energy in light bulbs.3.Finish the following dialogue using in

16、formation from the text.Read the dialogue in groups,with each group member playing a different role.a packet of sweetsDaisy:Im going to buy _.Does _ want _?Benny:Can you get me _?Daisy:Yes,I can.Benny(laughs):She cant buy electricity _.Shell look _.Mum:You mustnt say that,Benny.A moment later,Daisy comes back.Benny:May I have my _?Daisy:Here you are.Benny:But these are _!Dad:Daisys right.The _ inside batteries produce _.Mum:Who looks _ now,Benny?anyoneanythinga packet of electricityin packetsfoo