高中英语-Unit3《Computers》课件16-新人教版必修2

1、 Unit 3 Computers Period 1 Warming upHeavy!Difficult! Hard!Tired! Easy! Fast! Free!keyboardmousemonitorscreenspeaker host computercamera What do they have in common?an abacusa calculatora notebook computera laptopA huge computera robotA PC (personal computer)(What do they have in common?)I think tha

2、tIn 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 and helpful.DiscussionPDAabacuscalculatorhuge computerPClaptopWhats next?Can you tell the development of computers?robotw

3、ork for us in Mars(火星)Whats next?carry thingswork in wars (战斗)仿真机器人entertainment 娱乐What do you think will be the next development?Do you know in what ways computers are used today? Work out a list and compare it with your partner.search for see movieslisten to musicread books and magazinessend email

4、s to friendsdownload music and filmsbuy things on lineplay games on the computerdraw pictureslook at photographs on the computeruse a computer for school worktake part in chat groupsReading: Who am I?Skimming: Read and answer these questions:2. Who was the first person to invent the earliest compute

5、r? 3. Who was the next important person to design computers? Charles BabbageAlan Turing1. Who am I?A computer.timeline1642: 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

6、 size and in brainpower.Computer had grown as large as a room.Computers were used in offices and homes.Computers connect people all over the world together.the first family of computers was connected to each other Complete the chart below. Para-graph 1Para-graph 2Para-graph 3Topic sentenceSupporting

7、 detailstubescommunica-tions financeScanningReading ComprehensionParagraph 1Topic sentenceOver time I have been changed quite a lot.Supporting details1 calculating machine2 analytical machine3 universal machine4 PC5 laptopParagraph 2Topic sentenceThese changes only became possible as my memory impro

8、ved.Supporting details1 tubes2 transistors3 chips4 network5 World Wide WebParagraph 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 providing a life of high qu

9、alityThe history of computersthe second generation (1956-1963)the third generation (1964-1971)the fourth generation (1971- )The first generation (1945-1956)The development of computers:Calculating machineAnalytical machineUniversal machineArtificial intelligenceComputerInternet计算器分析机万能机,通用机器人工智能Deve

10、lop-mentEarly daysNameFunctionPoorStrongA _ machineSimplify difficult sumsAn _ machineThink logically and produce an answer quicklyA _ machineSolve difficult _calculatinganalytical universal mathematical problemsDevelop-mentNetwork times_ stored inTubesLargeSmall_Small chips _Narrow WideFinance_Robo

11、tsMobile phones_Space rocketsMedical operations MemoryTransistorsApplicationsCommunicationTradeIntensive reading: Underline the phrases &sentences 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 Howeve

12、r, people thought I was _ until they _ I had “artificial intelligence.”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可是，人们认为我头脑简单， 直到发现我有人工智能时，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 alwa

13、ys so lonely _ there by myself, until in the early 1960s,they gave me a family _ by a network.随着岁月的流逝， 我被做得越来越小了.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60年代初， 人们才给了我一个用网络连接的家庭。gone bytimestotally standingconnectedAdvantages and disadvantages of the computers. Discussion 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