人教必修2Unit3Computers

1、Unit 3 Computers Look at these pictures. Discuss what they have in common. Predict what it is going to be about.Warming upWhats next?Pre-reading questionsWhat have computers changed our life?2. What changes will they bring to us in the future?Task 1 Skimming1. Who is the speaker in this story? A com

2、puter.2. Write down three sentences from the story to support your idea. 1) I was built as an Analytical machine by Charles Babbage.2) My real father, Alan Turing, 3) I was always lonely standing there by myself, until in early 1960s they gave me a family connected by a network.Task 2 Fast reading1.

3、 Where were you in 1642? In France.2. What happened to you after nearly two hundred years? I was built as an Analytical Machine by Babbage.3. What were you called in 1936? A universal machine.4. What happened to you in the 1970s? I have been used in offices and homes.16421822The analytical machine w

4、as made by Charles Babbage.1936The computer began as a calculating machineThe computer grew rapidly both in size and in brainpower.Task 3 Careful reading1940s The first family of computers was connected to each other.1970s nowComputers had grown as large as a room.1960sComputers were used in offices

5、 and homes.Computers connect people all over the world together.DevelopmentEarly daysNameFunctionPoorStrongA _ machineSimplify difficult sumsAn _ machineThink logically and produce an answer quicklyA _ machineSolve difficult _calculatinganalytical universal mathematical problemsDevelopmentNetwork ti

6、mes_ stored inTubesLargeSmall_Small chips _Narrow WideFinance_RobotsMobile phones_Space rocketsMedical operations MemoryTransistorsApplicationsCommunicationTrade1completely2complete change3to make things easier4to find the answer using numbers5can be moved easily from place to place 6to work out the

7、 answer to a problemtotallyrevolutionsimplifycalculatemobilesolveTask 4 Fill in the blanks.7to travel around an area to find out about it8completely9anyway10activity of managing moneyexploretotallyanyhowfinanceThe history of computersthe second generation (1956-1963)the third generation (1964-1971)t

8、he fourth generation (1971- )The first generation (1945-1956)Task 5 QUESTION-ANSWERWhat is PC? Speak the name on the whole.It means: personal computer.2. What is IT?Information Technology.3. What is CD-ROM?Compact disc read-only memory.4. What is PDA?Personal digital assistant.5. What is W.W.W?World

9、 wide web.6. 科学技术。Science and technology.7. 人工智能。Artificial intelligence.8.笔记本电脑。Notebook computer.9. Who was the first person to devise the first computer? Charles Babbage invented an Analytical machine in 1822.10. Who was the computers real father?Alan Turing.Read the passage and then fill in the

10、chart.Reading task on Page 58 RECORD CARDHUA FEIAbilityPerformance in 78th Olympics Prize won Performance in 79th Olympics Reason for failure TreatmentExpert at high flying exercises: Olympic standardWonderful turns, dives, circles and dancesSilver medal for high flying exercisesBegan very well but

11、failed through no fault of his ownParachute failed to open.Two new legs and a new bigger head1. in common: for or by all of a group 共同的；共有的；共用的 the land owned in common by the residents 居民共有的土地 in common 常常同have连用，如： have nothing in common 无共同之处 have little in common 几乎无共同之处Language pointshave somet

12、hing in common 有一些共同之处have a lot in common 有许多共同之处以下是从英国国家语料库中选出来的几个例句:1) You know, Dorothy, you and I have one thing in common2) We just had nothing in common and I couldnt communicate with his dull business friends3) I suddenly felt we had a lot in common.2. calculate v. work (sth.) out by using n

13、umberse.g. calculate the cost of sth.calculator n. 让我们一起回忆一下以or结尾的词吧：visitor, survivor, competitor3. analytical adj.分析的, 解析的 analyse vt. 分析;研究 analogy n. 相似;类似 analysis n. 分析;研究 analyst n. 分析家 analytic adj. 分析的;分解的4. artificial adj. 人工的, 人造的 artificial flowers/limbs/pearls 假花/假肢/假珍珠 artificial intel

14、ligence 人工智能5. As a result 结果；终于；因此。考例 My friend Martin was very sick with a strange fever; _, he could neither eat nor sleep. (江西2005)A. as a result B. after all C. any way D. otherwise点拨 考查短语辨析。as a result结果； after all毕竟； any way不管怎样；otherwise 否则。由句意可知要选as a result。 6. totally adv. 整个地;完全地 totally

15、 blind 全盲 total adj. 完全的; 整个的 total silence 寂静无声 in total 总共7. And my memory became so large that even I couldnt believe it!句型：so that如此以致于与 tooto 句型的相互转换And my memory became too large for me to believe it.eg He is so old that he cant carry the box.He is too old to carry the box. 此结构中的that从句表示结果。 Th

16、e stone is so heavy that no one can lift it. 比较: so that 既可以表结果,也可以表目的。 so.that.结构的so+形容词/副词位于句首时,句子用倒装结构。So hard does he work that he seldom goes home.8. But I was always so lonely standing there by myself, until in early 1960s they gave me a family connected by a network. 点拨 until表示“直到时”，在肯定句中，指从开

17、始到结束的整段时间，谓语动词一般是延续性的。在否定句中构成not . until，意为“直到才”，指到某一点动作才开始，谓语动词一般是非延续性的。其强调句是it is (was) not until . that .。当not until位于句首时，句子要进行倒装。如：The experts explored the island until the end of last year. 直到去年年底，专家们一直都在勘查这个小岛。We didnt solve the problem until Mr. Smith helped us. 直到史密斯先生帮助我们，我们才解决了那个问题。It was

18、not until last year that my hope became a reality. Not until noon did it stop raining. 9. I have also been put into robots and used to make mobile phones as well as help with medical operations.1) help (sb) with sth 协助(某人)做某事e.g. A man is helping the police with their enquiries.有一男子在协助警方进行调查。2) as w

19、ell as 也，还，而且e.g. He grows flowers as well as vegetables.She is a talented musician as well as being a photographer.3) 这个句子是现在完成时被动语态，其机 构是 (have/has +been + 过去分词）e.g. The radio has been repaired when we phoned the shop.考例1 Professor James will give us a lecture on the Western culture, but when and

20、where _ yet. (浙江2007)A. hasnt been decided B. havent decided C. isnt being decided D. arent decided点拨 本题考查动词的时态、语态及主谓一致。由yet可知要用完成时态，又因时间与地点是被决定的，故应用被动语态。此外，“在什么时候和什么地点（做报告）”是指同一件事，故用单数形式。 考例2 When you get the paper back, pay special attention to what _. (四川2007)A. have marked B. have been marked C.

21、 had marked D. had been marked点拨 因mark 这一动作发生在get之前，且试卷是被批注，因此应用现在完成时的被动语态。考例3 I got caught in the rain and my suit _. (北京2007)has ruined had ruined C. has been ruined D. had been ruined点拨 句意为：我遭遇大雨，我的衣服被淋坏了。ruin表示的动作发生在got caught 之后，故排除B、D两项。此处表示被动，所以C项正确。10. anyhow 无论如何 Anyhow, you can try. 无论如何你可

22、以试试。 I dont care what you say; Im going to do it anyhow. 比较: somehow 意为“以某种方式;不知怎么地”11. I am now truly filled with happiness that I am a devoted friend and helper of the human race!点拨 that引导同位语从句，具体说明happiness的内容。that是连词，在从句中不充当任何成分。英语中用that引导同位语从句的情况比较常见，但有时也可以用连接副(代)词 how, when, where, whether等来引导

23、同位语从句。注意：if, which 不能引导同位语从句。如：I had the impression that she chose her words with care. 在我的印象中，她选词很小心。I heard the news that our team had won. 我听到了我们队获胜的消息。l have no idea when he will be back. 我不知道他什么时候回来。He must answer the question whether he agrees to it or not.他必须回答他是否同意这样一个问题。I. 根据下列各句句意及所给单词的首字母

24、或汉语提示，写出该单词的正确形式。1. The salesgirl asked me if I had the exact s_, since the shop had no change.2. The invention of aircraft caused a r_ in our ways of traveling.3. With the development of the Internet, the World Wide W_ has become a valuable information source for us.sumrevolutionWeb练习4. A_ intellig

25、ence is the study of how to make computers do things that people can do.5. The weathermen in Beijing are planning to fire r_ to drive away rain clouds during the 2008 Olympics.6. Two female tourists were robbed of their money and _ (可移动的) phones while walking in the street, so they felt very upset.7

26、. The crowd cheered wildly at the sight of Liu Xiang, who broke the world record in the 110-meter hurdle _ （比赛）.Artificialrocketsmobilerace8. They use the _ （管子） to transport oil from the west to the east.9. _ （人类的） facial expressions differ from those of animals.10. We will soon arrive at the point

27、 where we can find all the knowledge of humankind on a computer _ (网络).tubeHumannetworkII. 用括号内所给词的适当形式填空。1. Try to _ (simple) your explanation for the students to help them understand better.2. If you want to know about the hotel, you can call the _ (operate) to find out the information.simplifyope

28、rator3. The boy is very clever and he shows high _ (intelligent) in study.4. _ (real) is not the way you wish things to be but the way they actually are.5. Bob is _ (total) different from his father, who is very tall.6. They agreed to accept my _ (apply) for joining their elligenceReality to

29、tally application7. His success in business brought _ (happy) to his parents.8. We will make a _ (person) visit to the students home.9. His speech is _ (logical) organized and sounds great.10. I disagree that the age of _ (technology) revolution has ended. happinesspersonallogicallytechnologicalIII.

30、 用适当的介词填空。1. I stayed awake one night _ myself to enjoy the beautiful moonlight.2. _ time animals have developed many ways to stay away from their enemies.3. He has taken up photography _ a hobby.4. Leaves _ holes in them are signs that insects have been around.byOveraswith5. _ then on, Rick got up early every day and he was never late.6. Weve learned many kinds of languages _ the World Wide Web.7. Two girls jumped _ happiness on the sand.8. As time goes _, our life will improve greatly. Fromthrough / onwithby / onIV. 每空填一词，使该句与所给句子的意思相同。1. I always do the house