1、 Unit 3 Computers Period 1 Warming up Unit 3 ComputersHeavy!Difficult! Hard!Tired!Heavy! Easy! Fast! Free! Easy!keyboardmousemonitorscreenspeaker host computercamerakeyboardmousemonitorscreenspea What do they have in common?an abacusa calculatora notebook computera laptopA huge computer What do they

2、 have in common?aa robotA PC (personal computer)a robotA PC (personal computer(What do they have in common?)I think thatIn my opinionI believe thatWhats your reason?Why do you think so?1.They can be used for calculating. 2.They can deal with maths problems.3.They are our friends.4.They are useful an

3、d helpful.Discussion(What do they have in common?)PDAabacuscalculatorhuge computerPClaptopWhats next?Can you tell the development of computers?robotPDAabacuscalculatorhuge PClaptwork for us in Mars(火星)Whats next?work for us in Mars(火星)Whatscarry thingswork in wars (戰(zhàn)斗)carry thingswork in wars (戰(zhàn)仿真機器

4、人entertainment 娛樂What do you think will be the next development?仿真機器人entertainmentWhat do you Do you know in what ways computers are used today? Work out a list and compare it with your partner.Do you know in what ways compusearch for see moviessearch for see movieslisten to musicread books and maga

5、zineslisten to musicread books and send emails to friendsdownload music and filmssend emails to friendsdownloadbuy things on lineplay games on the computerbuy things on lineplay games odraw pictureslook at photographs on the computerdraw pictureslook at photograpuse a computer for school worktake pa

6、rt in chat groupsuse a computer take part in Reading: Who am I?Reading: Skimming: Read and answer these questions:2. Who was the first person to invent the earliest computer? 3. Who was the next important person to design computers? Charles BabbageAlan Turing1. Who am I?A computer.Skimming:2. Who wa

7、s the firsttimeline1642: 1822: 1936: 1940s:1960s: 1970s: Now: Scanning:The 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 offices and ho

8、mes.Computers connect people all over the world together.the first family of computers was connected to each other timelineScanning:The computer Complete the chart below. Para-graph 1Para-graph 2Para-graph 3Topic sentenceSupporting detailstubescommunica-tions financeScanningReading ComprehensionComp

9、lete the chart below. ParaParagraph 1Topic sentenceOver time I have been changed quite a lot.Supporting details1 calculating machine2 analytical machine3 universal machine4 PC5 laptopParagraph 1Topic Over time I hParagraph 2Topic sentenceThese changes only became possible as my memory improved.Suppo

10、rting details1 tubes2 transistors3 chips4 network5 World Wide WebParagraph 2Topic These changesParagraph 3Topic sentenceSince the 1970s many new applications have been found for me.Supporting details1 communications 2 finance 3 trade4 robots 5 mobile phones6 medical operations7 space rockets8 provid

11、ing a life of high qualityParagraph 3Topic Since the 197The history of computersThe history of the second generation (1956-1963)the third generation (1964-1971)the fourth generation (1971- )The first generation (1945-1956)the second generationthe thirdThe development of computers:Calculating machine

12、Analytical machineUniversal machineArtificial intelligenceComputerInternet計算器分析機萬能機,通用機器人工智能The development of computers:CDevelop-mentEarly daysNameFunctionPoorStrongA _ machineSimplify difficult sumsAn _ machineThink logically and produce an answer quicklyA _ machineSolve difficult _calculatinganal

13、ytical universal mathematical problemsDevelop-mentEarly daysNameFuncDevelop-mentNetwork times_ stored inTubesLargeSmall_Small chips _Narrow WideFinance_RobotsMobile phones_Space rocketsMedical operations MemoryTransistorsApplicationsCommunicationTradeDevelop-mentNetwork times_Intensive reading: Unde

14、rline the phrases &sentences that you think are importantIntensive reading:Star 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.”我執(zhí)行穿孔卡的指令早些時候我并不是很大，但是后來我變得非常

15、大可是，人們認為我頭腦簡單， 直到發(fā)現(xiàn)我有人工智能時，他們才不那么想了。followedhugesimple-mindeddiscoveredStar sentences:P1 L2 I _P1 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 fami

16、ly _ by a network.隨著歲月的流逝， 我被做得越來越小了.有段時期我的體積完全變了但是我總是孤孤單單地站在那里，直到60年代初， 人們才給了我一個用網(wǎng)絡(luò)連接的家庭。gone bytimestotally standingconnectedP1 L8 As the years have _Advantages and disadvantages of the computers. Discussion Advantages and disadvantages o 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 useful things DisadvantagesSome people especially the teenagers abandon (沉