必修二Unit3Warmingup黄梅娃教学课件

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1、 Unit 3 Computers Period 1 Warming upHeavy!Difficult! Hard!Tired!1. Easy!2. Fast!3. Free!keyboardmousemonitorscreenspeaker host computercamera What do they have in common?an abacusa calculatora desktopa notebook computera laptopdigital camera a robotPDA?(What do they have in common?) I think that In

2、 my opinion I believe that Whats your reason? Why do you think so?1.They can be used for calculating. 2.They can deal with math problems.3.They are our friends.4.They are useful and helpful.Discussion They are all computers which developed in different periods. What do they have in common?carry thin

3、gswork in wars (战斗战斗)What do you think will be the next development?仿真机器人entertainment 娱乐娱乐Predict The and usage of computers. developmentReading: Who am I? advantages we cancommunicate with friends listen to the music see films & watch news play games do shopping save a lot of time do a lot of usef

4、ul things Pre-reading2.What ways are computer used today？Pre-reading3.Put them in an order( )analytical machine( )calculating machine( )PC( )laptop( )robot( )universal machine个人电脑个人电脑手提电脑手提电脑计算机计算机通用机器通用机器分析机分析机机器人机器人Skimming Find out the topic sentence of each paragraph.Para1 Para2Para3Only times I

5、 have been changed quick a lot . This changes only became possible as my memories improved. Since the 1970s many new applications have been found for me. What is the main idea of the passage?This is a short of the of computershistory development1642: 1822: 1936: 1940s:1960s: 1970s: Now: Scanning:The

6、 computer began as a calculating machine. the Analytical Machine was built by Charles Babbage.The computer grew rapidly both in size and in brainpower.Computer had grown as large as a room.Computers were used in officers and homes.Computers connect people all over the world together.The first family

7、 of computers was connected to each other The history of computersPage19 exercise2Para1Para2Para3Topic sentenceSupportingdetailsOnly times I have been changed quick a lot . This changes only became possible as my memories improved. Since the 1970s many new applications have been found for me. calcul

8、ating machine、analytical machine、universal 、PC.、 laptopTubesTransistorChipsNetwork、World Wide WebCommunicationFinanceTrade robotsMobile phonesMedical operationSpace rocketsthe second generation (1956-1963)the third generation (1964-1971)the fourth generation (1971- )The first generation (1945-1956)T

9、he development of computers:Calculating machineAnalytical machineUniversal machineArtificial intelligenceComputerInternet计算器计算器分析机分析机万能机万能机,通用机器通用机器人工智能人工智能Develop-mentEarly daysNameFunctionPoorStrongA _ machineSimplify difficult sumsAn _ machineThink logically and produce an answer quicklyA _ machi

10、neSolve difficult _calculatinganalytical universal mathematical problemsDevelop-mentNetwork times_ stored inTubesLargeSmall_Small chips _Narrow WideFinance_RobotsMobile phones_Space rocketsMedical operations MemoryTransistorsApplications CommunicationTradeIntensive reading: Underline the phrases &se

11、ntences that you think are importantStar sentences:P1 L2 I _instructions from cards with holes.P1 5 Earlier I was not very big, but then I became _ .P1 L6 However, people thought I was _ until they _ I had “artificial intelligence.”我执行穿孔卡的指令我执行穿孔卡的指令早些时候我并不是很大，但是后来我变得非常大早些时候我并不是很大，但是后来我变得非常大可是，人们认为我

12、头脑简单，可是，人们认为我头脑简单， 直到发现我有人工智能时，直到发现我有人工智能时，他们才不那么想了。他们才不那么想了。followedhugesimple-mindeddiscoveredP1 L8 As the years have _, I have been made smaller and smaller.P2 L1 There were _ when my size was _changed.P2 L3 But I was always so lonely _ there by myself, until in the early 1960s,they gave me a fam

13、ily _ by a network.随着岁月的流逝，随着岁月的流逝， 我被做得越来越小了我被做得越来越小了.有段时期我的体积完全变了有段时期我的体积完全变了但是我总是孤孤单单地站在那里，直到但是我总是孤孤单单地站在那里，直到60年代初，年代初， 人们才人们才给了我一个用网络连接的家庭。给了我一个用网络连接的家庭。gone bytimestotally standingconnectedAdvantages and disadvantages of the computers. Discussion Discussion advantages we cancommunicate with fr

14、iends listen to the music see films & watch news play games do shopping save a lot of time do a lot of useful things DisadvantagesSome people especially the teenagers abandon (沉迷于沉迷于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study .Some peo

15、ple use the computer wrongly. Other useful words and expressions about computer:Network网络网络 Virus病毒病毒Download 下载下载Up load 上传上传Program程序程序Website站点站点Hacker 黑客黑客Home page 主页主页Password密码密码Desk top 桌面桌面User name 用户名用户名Click 点击点击Software 软件软件Hardware 硬件硬件Home page 主页主页Homework1.Review the text2.Recite Para one3.Finish Ex. 1/2 on Page 20.