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. 科學(xué)技術(shù)。Science and technology.7. 人工智能。Artificial intelligence.8.筆記本電腦。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連用，如： have nothing in common 無(wú)共同之處 have little in common 幾乎無(wú)共同之處Language pointshave somet

12、hing in common 有一些共同之處have a lot in common 有許多共同之處以下是從英國(guó)國(guó)家語(yǔ)料庫(kù)中選出來(lái)的幾個(gè)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. 讓我們一起回憶一下以or結(jié)尾的詞吧：visitor, survivor, competitor3. analytical adj.分析的, 解析的 analyse vt. 分析;研究 analogy n. 相似;類(lèi)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 結(jié)果；終于；因此?？祭?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點(diǎn)撥 考查短語(yǔ)辨析。as a result結(jié)果； after all畢竟； any way不管怎樣；otherwise 否則。由句意可知要選as a result。 6. totally adv. 整個(gè)地;完全地 totally

15、 blind 全盲 total adj. 完全的; 整個(gè)的 total silence 寂靜無(wú)聲 in total 總共7. And my memory became so large that even I couldnt believe it!句型：so that如此以致于與 tooto 句型的相互轉(zhuǎn)換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. 此結(jié)構(gòu)中的that從句表示結(jié)果。 Th

16、e stone is so heavy that no one can lift it. 比較: so that 既可以表結(jié)果,也可以表目的。 so.that.結(jié)構(gòu)的so+形容詞/副詞位于句首時(shí),句子用倒裝結(jié)構(gòu)。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. 點(diǎn)撥 until表示“直到時(shí)”，在肯定句中，指從開(kāi)

17、始到結(jié)束的整段時(shí)間，謂語(yǔ)動(dòng)詞一般是延續(xù)性的。在否定句中構(gòu)成not . until，意為“直到才”，指到某一點(diǎn)動(dòng)作才開(kāi)始，謂語(yǔ)動(dòng)詞一般是非延續(xù)性的。其強(qiáng)調(diào)句是it is (was) not until . that .。當(dāng)not until位于句首時(shí)，句子要進(jìn)行倒裝。如：The experts explored the island until the end of last year. 直到去年年底，專(zhuān)家們一直都在勘查這個(gè)小島。We didnt solve the problem until Mr. Smith helped us. 直到史密斯先生幫助我們，我們才解決了那個(gè)問(wèn)題。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 協(xié)助(某人)做某事e.g. A man is helping the police with their enquiries.有一男子在協(xié)助警方進(jìn)行調(diào)查。2) as w

19、ell as 也，還，而且e.g. He grows flowers as well as vegetables.She is a talented musician as well as being a photographer.3) 這個(gè)句子是現(xiàn)在完成時(shí)被動(dòng)語(yǔ)態(tài)，其機(jī) 構(gòu)是 (have/has +been + 過(guò)去分詞）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點(diǎn)撥 本題考查動(dòng)詞的時(shí)態(tài)、語(yǔ)態(tài)及主謂一致。由yet可知要用完成時(shí)態(tài)，又因時(shí)間與地點(diǎn)是被決定的，故應(yīng)用被動(dòng)語(yǔ)態(tài)。此外，“在什么時(shí)候和什么地點(diǎn)（做報(bào)告）”是指同一件事，故用單數(shù)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點(diǎn)撥 因mark 這一動(dòng)作發(fā)生在get之前，且試卷是被批注，因此應(yīng)用現(xiàn)在完成時(shí)的被動(dòng)語(yǔ)態(tài)?？祭? I got caught in the rain and my suit _. (北京2007)has ruined had ruined C. has been ruined D. had been ruined點(diǎn)撥 句意為：我遭遇大雨，我的衣服被淋壞了。ruin表示的動(dòng)作發(fā)生在got caught 之后，故排除B、D兩項(xiàng)。此處表示被動(dòng)，所以C項(xiàng)正確。10. anyhow 無(wú)論如何 Anyhow, you can try. 無(wú)論如何你可

22、以試試。 I dont care what you say; Im going to do it anyhow. 比較: somehow 意為“以某種方式;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!點(diǎn)撥 that引導(dǎo)同位語(yǔ)從句，具體說(shuō)明happiness的內(nèi)容。that是連詞，在從句中不充當(dāng)任何成分。英語(yǔ)中用that引導(dǎo)同位語(yǔ)從句的情況比較常見(jiàn)，但有時(shí)也可以用連接副(代)詞 how, when, where, whether等來(lái)引導(dǎo)

23、同位語(yǔ)從句。注意：if, which 不能引導(dǎo)同位語(yǔ)從句。如：I had the impression that she chose her words with care. 在我的印象中，她選詞很小心。I heard the news that our team had won. 我聽(tīng)到了我們隊(duì)獲勝的消息。l have no idea when he will be back. 我不知道他什么時(shí)候回來(lái)。He must answer the question whether he agrees to it or not.他必須回答他是否同意這樣一個(gè)問(wèn)題。I. 根據(jù)下列各句句意及所給單詞的首字母

24、或漢語(yǔ)提示，寫(xiě)出該單詞的正確形式。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練習(xí)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 _ (可移動(dòng)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 _ （比賽）.Artificialrocketsmobilerace8. They use the _ （管子） to transport oil from the west to the east.9. _ （人類(lèi)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 _ (網(wǎng)絡(luò)).tubeHumannetworkII. 用括號(hào)內(nèi)所給詞的適當(dāng)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、 用適當(dāng)?shù)慕樵~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. 每空填一詞，使該句與所給句子的意思相同。1. I always do the house