导学案：必修2—Unit3Computers

1、Unit 3 ComputersThe first period New words and expressions课前自主预习：预习P18、P23文章，弄懂每个单词、词组、句子的意思，划分复合句（特别是定语从句）的结构，重点把握下列词语在文章中的涵义 calculator universe simple operate logical technology revolutionary intelligent real person total apply anyhow sign appear character（课前练习）根据预习情况完成下列练习词汇 _ 解决；解答 _ 探索；探测；探究 _

2、 下载 _ 出现；发生 _ 人造的；假的 _病毒词组 _ 从时起 _ 结果 _ 如此以至 _ 在某种程度上 _在的帮助下 _ 处理，对付 _ 监视； 看守用括号中所给词的适当形式填空1. With the development of science and _, people will live a happier life.2. IQ(智商) stands for _ quality.3. The captain had an _ leg, made of wood.4. English is a _ language, so we have to learn it.5. We will

3、soon arrive at the point where we can find all the knowledge of humankind on a computer _(网络).The second period Warming up and Pre-readingLook the video and get to know the history of the development of computerslanguage points1. Discuss what they have in common.have a lot/much/little/something/noth

4、ing in common with：有许多/几乎没有/一些/没有/共同之处E.g. What do the two pictures have in common? 这两个图片之间有什么共同之处?They have nothing in common with one another. 他们彼此毫无共同之处.词组:common people老百姓，普通人common sense常识common knowledge总所周知的事common interest共同的兴趣近义词辨析：common多表示“普通的，常见的；共有的”，指符合或具有全体所共有的特征normal多表示“标准的；正常的”强调在正

5、常范围内ordinary多表示“普通的；平淡无奇的”，强调无特别之处usual多表示“习惯性的；遵守常规的”general多表示“公众的；普遍的”Exercise:1） It has become a _ flower. You can find it here and there.(common)2） It is _ to start a speech by introducing oneself.(usual )3） Although she was rich, she was always in _ dress.(ordinary)4） The _ temperature of huma

6、n body is 37.(normal)5） The _ public believed that it was unfair to refuse a disabled young man to do the job.( general)6） I havent a thing _ common _ my father.( B)2. What do you think will be the next development?本句中的do you think为插入语，插在特殊疑问句的中间，前后不必用逗号隔开，除think 外，作插入语的动词有believe, imagine, suppose,

7、 suggest, consider, say, suggest 等。注意：1) 疑问句在句中作主语时，将插入语放在疑问词后谓语动词前，其他不变，如将插入语撤走，原句式部变。E.g. Who do you think ate the cake?2) 疑问词在句中不作主语，将插入语放在疑问词后，think其他成分要成为的宾语从句，即要用陈述句语序。E.g. Why do you think she was late again?拓展：常见得插入语还有：I think, I hope, I guess, Im afraid, I believe, you know, you see等。这些插入语常

8、用逗号分开。E.g. The diet, I think, will do good to your health.Exercise:1. Who _ be sent to work there?2. - We havent heard from Jane for a long time. - What do you suppose _(happen) to her?3. Who _ is going to marry Lily?The third period: Reading; Comprehending（复习环节）根据自己对课文及相关词汇的理解完成下列练习词组短语翻译1. fromon

9、_2. as a result _3. Sothat _4. in a way _5. as well as_6. as time goes by _7. in/during the 1970s _8. _技术革命9. _ 解决问题 10. _ 人工智能 11. _ 走过；过去12. _与信息共享 13._为人类提供高品质的生活重点句型。1.I was developed very slowly and _ I was built as an analytical machine by Charles Babbage.2. _, I was made smaller.3._ my memory

10、 has developed _ much_, like an elephant, I never forget anything _.Teaching procedures:Step1 Skimming(1) The main idea of the passage:This is a short _ of the _ of computers.(2) Find out the topic sentences of each paragraph (Comprehending 2/page 19)1 _2_3_Step2 ScanningTrue or False?1. The compute

11、r began as a calculating machine in 1742. ( )2 The Analytical Machine was made by Charles Babbage in 1822. ( )3. Computers had new transistors and became smaller in the 1960s.4. Alan Turing wrote a book to describe how computers could be made smaller. ( )5. In the past people thought the computer wa

12、s simple-minded. ( )6. In the 1960s the first family of computers was connected to each other. ( )7. Computers could share information and express their feelings. ( )8. Computers connect people all over the world together.( )Step 3 Careful reading (Comprehending 1/page 19)Read the passage and finish

13、 the timeline.Step 4 Read the text and do the following comprehending exercises.1. What was the original purpose of inventing computers?A. To calculate somethingB. To analyze somethingC. To solve mathematical problemsD. To serve the human race2. Which of the following is true about computers develop

14、ment?A. It changes from small to big, then smaller.B. It is becoming cleverer and cleverer in intelligence.C. The speed it works at is becoming faster and faster.D. All of the above.3. When did the Internet come into use?A. In 1936B. In 1950C. In the early 1960sD. In the 1970s4. How do the computers

15、 serve the human race?A. By sharing pictures with other computers.B. By talking to humans just as what they do.D. By helping people deal with information by the Internet.Step 5. SummaryI was born as a _ machine in 1642. When I was young, I was good at_ difficult sums. About 2 hundred years had passe

16、d before I could think _ and produce_ answers. At that time, I was called an _ machine. In 1936, I was built as a _ machine . I had the ability to _any mathematical problem. From then on, I grew rapidly both in _ and memory. After I stored my memory on_instead of in _. I became _ in size but _in int

17、elligence. As time went by, I became even smaller, for I put my memory on a very small _, which made me become PC and laptop. In the 1960s, I could be connected with other computers by a _. From then on, I was able to share my knowledge with others through the _ _ _. After that, I had many new_. Now

18、, I am glad to serve human beings as a _ _ and a pleasant _.The fourth period: Language points （复习环节）根据自己对课文及相关词汇的理解完成下列练习词汇1._ adj. 有逻辑的2. _ vt. 解决3. _ n. 目标4._ adv. 完全5. _ vt. 计算6. _ vt. 简化7. _ n. 智力；聪明8. _ adj. 私人的；亲自的9. _ n. 幸福；快乐10. _ n. 真实；现实短语1. have sth _ common _ 和有共同之处。2. _ with 把. 与相比3. f

19、rom _ on 从那时起4. go _ 过去；经过；走过5. so _ 如此以致于6. as a _ 结果7. as _ as 既. 又., 不但而且.8. provide sb. _ sth. 为某人提供某物9. _ sth. with sb. 与某人分享某物Language points1. Although I was young I could simplify difficult sums.simplify n. / adj.（+ ify构成V.）beauty + ify beautify _class+ ify classify _glory + ify glorify _pur

20、e + ify purify _sum n. 总数，算术题，金额 in sum总之a large sum of大量，许多（不可数名词）E.g. He gave me _ food. 他给了我很多食物。2. calculate v. 计算 后可跟_;_;_思维拓展：calculation n. 计算；计算结果calculator n 计算器calculable adj. 可计算的calculated adj. 精心策划的；蓄意的常用搭配：be calculated to do sth. 打算做某事be calculated for 为适合而设计calculate on/upon = depend

21、 on指望巩固练习：1) 他的话是故意伤她的。His mark _ hurt her.2) 我们指望着开运动会时会有好天气。We are _ having fine weather for the sports meeting.3) The scientists are able to _ accurately when the spaceship will reach the moon.3. It took nearly 200 years before I was built as an analytical machine by Charles Babbage.翻译：_句式透析：It w

22、ill take/ took/ was +一段时间+before 从句本句型中，before引导一个时间状语从句。Before的本意为“在之前”，但如果主句是肯定句，并且与时间段连用，可意为：“之后才”，表示主句的动作放生的迟缓How long _ the global economic crisis comes to an end?多久后这次世界经济危机才能结束。before 引导时间状语从句时，如果主句是否定意义的句子，则有“不久就”之意，表示主句动作很快发生。It didnt take / was long before _It wont take / be long before .

23、_例句：She didnt work hard and it didnt take long before she got the kick.翻译：_before 常与can 或could 连用，意为“还没（来得及）就；不等就”巩固练习：1) 他又花了五年的时间才实现了上大学的梦想。It took another five years _ he _ his dream of going to college.2) 我还没来得及阻止他，他就跳进了水里。He jumped into the water _ I _ _ him.3 不久就会有人来看你。It _ _ a long time _ som

24、eone comes to see you.4) He was told that it would be at least three more months _ he could recover and return to work.4. Until in early 1960s they gave me a family connected by a network.1). It is not rare _(在二十世纪九十年代) that people _（在五十几岁的时候）are going to university for further ellige

25、nce n智力；聪明intelligent adj.有智力的；聪明的；理解力强的例句He is a person of great intelligence. 他是个极聪明的人。A dolphin is an intelligent animal.海豚是有智力的动物。习语human intelligence 人类智慧intelligence test 智力测试intelligence quotient(IQ) 智商a person of high /low Intelligence 高智商、低智商的人练习The boy give a(n) _ （聪明的）reply to avoid the e

26、mbarrassment.6. My real father Alan Turing wrote a book about how I could be made to work as感官动词(see/ watch/ hear等)与使役动词(make/ let /have)后接do,而在被动语态中必须有to.They heard the man sing a song.补充1感feel2听hear, listen to3让let, make, have4看see, look at, watch, notice, observe（其实是五看）半帮助 help (to) do7. As time

27、went by, I was made smaller. =With time going by随着时间的流逝，.go by (时间)过去，逝去从经过遵循，以来判断As time goes by, my memory seems to get worse.Did you see a boy go by on a bicycle?Thats a good rule to go by.练习(1) As time_, she became more and more anxious about her son's safety.(2) With the time_, our anxiety

28、grew.(3) Three months_ before we knew it.8 .provide sb. with sth.= provide sth for sb.This has provided police with an important clue(线索).= This has provided an important clue for police.supply sb with sth= supply sth to sb/offer sb sth = offer sth to sb 提供The fifth period: Language points and learn

29、ing about language （复习环节）根据自己对课文及相关词汇的理解完成下列练习词汇1. _ n. 智力2. _ vt. 下载3. _ adj. 有才智的4. _ adj. 人造的；假的5. _ n. 技术6. _ n. 网7. _ n. 病毒8._ adj. 疯狂的；着迷的9. _ vt. 攻击10. _ vt. 探索短语1. make good use _ 充分利用2. all _ the world全世界3. be crazy _对着迷4. go _ 走过；经过；流逝5. come _实现6. give _捐赠；泄露；颁发；丧失7. play _玩耍8. pick _挑出；认

30、出9. work _算出10. _ _ own 属于某人自己的Teaching steps:1. Check the homework (Exercise 1, 2 and 3/P20) Language points 1. He used to download information from the Internet and made good use of it. Information n. （u）信息，资料，情报E.g. Have you got any information about local events, please? make use of 利用，使用 make g

31、ood /full use of 充分利用make the most (use) of充分利用make the best (use) of 尽量利用make little use of 不充分利用2 . When I was young, I was crazy about radios.be crazy about 对着迷，醉心于I know the girl is just crazy about dancing.我知道这个女孩对跳舞很着迷。3. develop a special interest in sth. 发展某方面的特殊爱好4. play with 玩耍，玩弄5. do res

32、earch into /on sth.做的研究6. come true vi 成为现实E.g. My dream has come true.=my dream has been realized =I have realized my dream.7. give away 捐赠；赠送；表露；泄露；颁发；丧失He gave away most of his books to our school._8. pick out 挑选；认出He picked out his friend from the crowd. _We picked out the seeds for the followin

33、g year. _9. of ones own 属于某人自己的My brother was very interested in computers and enjoyed writing programs of his own. _相关链接：on ones own 独自，靠自己，独立地He lives on his e into ones own 开始得到应有的荣誉 hold ones own (against) 坚持自己的立场10. Youd better do them again.Youd better 后跟动词原形，意为：“最好做某事”，其否定式为：Youd bette

34、r not do sth翻译： _ 你最好立刻回家。_ 你最好不要独自靠近那条河。课内基础检测：1. He came to help us _ he had lots of work to do.A. asB. althoughC. whileD. whenever2. As time _ my memory seems to get worse.A. goes alongB. goes awayC. goes byD. goes through3. In _ he began to learn Spanish, when he was in _.A. 1970; the 40sB. the

35、1970; his 40C. the 1970s; his 40D. 1970; his forties4. Theyre trying to _ a new way of farming, with the purpose of increasing the production of crops.A. makeB. formC. developD. perform5. She was unable to walk _ the fall from the bike.A. becauseB. asC. as a resultD. as a result of6. - Do you think

36、an advertisement is help when you look for a job? - Well, it depends. _, it gives me a chance to try.A. OtherwiseB. AnywayC. ThereforeD. Though7. My aunt lost her left arm in an accident, and now she has a(n) _ arm.A. magicalB. physicalC. logicalD. artificial8. He didnt go home _ he finished his wor

37、k.A. untilB. ifC. whenD. unless9. His brother went away and has never been heard _.A. since thenB. from ever sinceC. after that timeD. from then on10. Im sorry youve been waiting so long, but itll still be some time _ Brian get back.A. beforeB. sinceC. tillD. after11. The loss has not yet been _ acc

38、urately, but it is believed to be well beyond a hundred million dollars.A. calculatedB. consideredC. completedD. controlled12. It was _ that we all went out for a walk.A. so beautiful dayB. such a beautiful a dayC. such a beautiful whetherD. so beautiful a night13. Mum is coming. What present _ for

39、your today?A. you expect she has gotB. you expect has she gotC. do you expect she has gotD. do you expect has he got14. Youd better make _ best of your intelligence.A. aB. anC. theD. /15. My sister is crazy _ computer games.A. toB. aboutC. ofD.forThe six period Grammar (the Present Perfect Passive V

40、oice.)Teaching proceduresStep 1 RevisionTranslate the sentences into English:1) 他太聪明了，大家都喜欢他。_2) 他是一个如此聪明的男孩，以致于大家都喜欢他。_3) 他取得如此大的进步，以致于老师们都对他很满意。_4) 他出了太多的差错，所以考试失败了。_Step 2 Grammar revision1. Review the passive voice1) 被动语态的结构：be + p.p.2) 一般现在时被动语态的结构：am/is/are (not)+p.p.3) 一般过去时被动语态的结构：was/were (

41、not)+p.p.4）含有情态动词被动语态的结构：can/could/may/might/will/would/shall/should/must/need(not)+be + p.p.5）一般将来时被动语态的结构：will (not)/be (not) to+ be+ p.p.2. Fill in the blank with the right form of the verb given.1) Running race _ (hold) on the playground yesterday.2) Food _(serve) between 12:00 and 14:00 every d

42、ay.3) Nobody can_ (allow) to enter the stadium without a ticket.4) Whoever breaks the law, he _ (punish).Step 3 Grammar learning1. DiscoveringAsk students to look at the exercises 1 on page 21. Look at the following sentence, paying attention to the underlined part.EXAMPLE: Over time I have been cha

43、nged a lot.Ask students to go back to page 18 to read the passage Who am I? Let them pick out the sentences in the present perfect passive voice and translate them into Chinese.1)_2)_3)_4)_2. ThinkingLet students look at the tense used in the sentences they picked out and think over this question: W

44、hat is the structure of the present perfect passive voice?3. Summing upThe structure of the present perfect passive voice is “have/has+ been + p.p.” It is a combination of the present perfect tense (have/has + done) and the passive voice (be + p.p.).Ask students to turn to page 87 and look at the ch

45、art of the present perfect passive voice.现在完成时的被动语态的构成：肯定形式：_否定形式：_疑问形式：Have/Has+主语+been+ 过去分词 Step 4 Grammar practiceAsk students to finish the exercise 2 and 3 on page 21.Exercise 2Change the following sentences into the present passive voice.1.My friend has bought a new personal computer. _2.The

46、shop has repaired my computer very quickly. _3.An unknown virus has just attacked my computer._4.We have not solved the problem yet._5.The company has given its computers away to a local school._6.The scientists have developed a kind of intelligent robot._-Exercise 3 (Page21)1. Underline the usage of the present perfect passive voice in the following poem.2. Fill in the chart below.Step 5 Homework1. Preview and understand the passage Andy-The Android on page 232. Find the sentences in whi