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八年级英语Everyone’s language课件12.ppt

1、Chapter 4 Numbers RevisionRivision of the wordsabacusbrain calculatorlightning1._:almost2._:correct and true 3._:strong4._:of or like people,not animals 5._:on the other side in a game,fight,etc.6._:a group of things that work together7._:grow bigger or stronger;become better8._:give orders to a com

2、puternearlyaccuratepowerfulhumanagainst Say and spell the words according to the meaningssystemdevelopprogram9._:use numbers to find answersA _ is a _ machine.It helps people to _ faster and more accurately because it can do a difficult _ in a flash.calculatorcalculating calculate calculationcalcula

3、tecalculate(v.)计算 calculation(n.)计算calculator(n.)计算器 calculating(adj.)计算的10._:make for the first timeBenjamin Franklin was a famous _.He _ the lightning rod(避雷针).It is a great _.inventorinventedinventioninvent(v.)发明inventor(n.)发明家invention(n.)发明invent 11._:that are going to be mentioned nextCan you

4、answer the _ questions?_ me please.Ill show you the way.followingFollowfollowingfollowing(adj.)下列的follow(v.)跟随12._:not dead Can all _ things _ for several days without food?13._:very surprising We felt _ when we read the _ story.livingliveamazedamazingliving(adj.)活着的 live(v.)生活livingamazingamazing(a

5、dj.)令人惊奇的amazed(adj.)感到惊奇的 Revision of the phrasesSay the phrases according to the meanings1._:long,long ago2._:not less than3._:in a very short time4._:not in the same way5._:in all ones life6._:work out the problemin ancient timesat leastin a flashin different waysin ones whole lifetimesolve the p

6、roblem 1.We can use water _,such as washing clothes or cooking food.2.Li Bai was a great poet who lived _.3.It took us one hour to _at least in a flash in ancient times in different ways solve the problem in ones whole lifetimein different waysin ancient timessolve the problemat least in a flash in

7、ancient times in different ways solve the problem in ones whole lifetime4.Your teacher looks old.He must be _ 50 years old.5.My father lived in China _.6.The computer finished the calculation _.at leastin his whole lifetimein a flashKeep the same meaning of each sentence1.I spent two days doing this

8、 job.It _ me two days _ do this job.2.He is strong.He can carry the heavy suitcase.He is _ strong _ he can carry the heavy suitcase.He is strong _ _ carry the heavy suitcase.tooktosothatenoughtoRevision of the sentence structures3.The coat is expensive.He cant buy it.The coat is _ expensive _ he can

9、t buy it.The coat is _ expensive for him _ buy.The coat is not _ _ for him to buy.sothatcheapenoughtootoRevision of the PassageAnswer the questions about the text1.What did people write in many different ways?2.In what way did people count?3.Who invented the zero?4.Why was the zero a very important

10、invention?People wrote numbers in many different ways.People counted in tens.The Indians invented the zero.Because it made it easier to write big numbersand to calculate.5.Which was one of the first calculating machines?6.Why do people still use abacuses today?7.What can a modern electronic calculat

11、or do?8.Why do we say computers are very powerful?One of the first calculating machines was an abacus.Because they are fast and accurate.It can add,subtract,multiply and divide.It can also calculate percentages and square roots.Because it can do a calculation that you could not do in your whole life

12、time in a flash.9.How long did Shakuntalas brain take to find the answer?Shakuntalas brain took fifty seconds to find the answer.Fill in the blanks according to the passage Everyone knows the international _ of numbers.In ancient times,numbers were written in _ ways,but counting was nearly always in

13、 _.Everyone uses the number _ 1 to 9 plus zero.The system was invented by the Indians._ makes it easier to write big numbers and to _.languagetenssystemZerocalculatedifferent There are three calculating machines,the abacus,the modern _ calculator and the computer.Which is more powerful,the computer

14、or the human _?There was a competition between an amazing lady who is from _ and a powerful computer.However,the lady won.Her brain _ less time to find the answer,like _.Computers cant do anything by themselves.Someone had to first _ the computer.electronicbrainIndiatooklightningprogramWhat is each

15、part mainly about?P1:different ways of writing ancient numbersP2:the system of numbersP3:three calculating machinesP4:a powerful living computerGroup discussion In what way can computers help us in daily life?calculate find play buy talk study teach keep type print draw solve help.to use.to.with.make it easier to.Homework1.Read and try to recite the text2.Write a passage of at least 60 words on the topic“My views on the computer”Goodbye

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