核心英语下册Unit1电子教案.ppt

1、Higher Vocational English,Unit 1:Internet and Computers,Background References,1The invention of the first computer in the world by John Mauchly and J. Presper Eckert in 1946,Background References,In 1943 John Mauchly, an American physicist, and J. Presper Eckert, an American engineer, proposed an el

2、ectronic digital computer, called the Electronic Numerical Integrator And Computer (ENIAC), which was built at the Moore School of Engineering at the University of Pennsylvania in Philadelphia. The computer was based on some concepts developed by John Atanasoff, a physics teacher at Iowa State Colle

3、ge, who would used the vacuum tubes to speed up calculations,Background References,It took the research team about one year to design the ENIAC and 18 months and 500,000 tax dollars to build it with the support of American military. ENIAC was completed in 1946 and is regarded as the first successful

4、, general digital computer. It contained 17,468 vacuum tubes, along with 70,000 resistors, 10,000 capacitors, 1,500 relays, 6,000 manual switches and 5 million soldered joints. It covered 1800 square feet (167 square meters) of floor space, weighed 30 tons, consumed 160 kilowatts of electrical power

5、,Background References,Many of ENIACs first tasks were for military purposes, such as calculating ballistic firing tables and designing atomic weapons. The ENIAC is important historically, because it laid the foundations for the modern electronic computing industry. More than any other machine, the

6、ENIAC demonstrated that high-speed digital computing was possible using the then-available vacuum tube technology,Background References,2William (Bill) H. Gates,Background References,BILL GATES is chairman and chief software architect of Microsoft Corporation, the leading provider, worldwide, of sof

7、tware for the personal computer. Born on October 28, 1955, Gates and his two sisters grew up in Seattle. He attended public elementary school and the private Lakeside School where he began his career in personal computer software, programming computers at 13. In 1973, Gates entered Harvard Universit

8、y as a freshman,Background References,But in his junior year, Gates dropped out of Harvard to devote his energies to Microsoft, a company he began in 1975 with Paul Allen who left the company in 1983. Gates oversaw the invention and marketing of the MS-DOS operating system, the Windows operating int

9、erface, the Internet Explorer browser, and a multitude of other popular computer products. Along the way he gained a reputation for fierce competitiveness and aggressive business savvy,Background References,During the 1990s rising Microsoft stock prices made Gates the worlds wealthiest man. His weal

10、th has at times exceeded $75 billion, making Gates a popular symbol of the ascendant computer geek of the late 20th century. In June of 2006, Gates announced that he would step down from day-to-day involvement in Microsoft by July of 2008. He said he would then remain chairman of the Microsoft board

11、 while focusing on his charitable foundation, the Bill and Melinda Gates Foundation,Practice Book (answer key,Part 1 Activity 1 Activity 2 Activity 3,Part 2 Try to Remember Exercise 1 Exercise 2 Exercise 3,Part 3 Pre-Reading Text A Text B,Part 4 Brainstorming Tips Task,Part5 grammar Activity Answers

12、,Main Contents,Part I : Speaking Activity,Activity 1,Part I : Speaking Activity,Activity 1: Direction: Look at the above pictures about means of communication. Which one do you like to use to communicate with your friends? What are their advantages and disadvantages? Have a discussion with your part

13、ner and fill in the following form. Advantages Disadvantages Letter _ _ Mobile Phone _ _ Computer (Internet) _ _,Part I : Speaking Activity,Activity 2: Directions: What are the uses for computers at home? at school? in a factory ? in a restaurant? Match phrases in column A with column B. Then try to

14、 add more uses for each item in column C. A B C communicate with friends at home _ play computer games open an account at school _ pay the telephone bill create work timetable in a factory _ conduct working robots find books in the library at a bank _ show the teachers teaching plan skip important n

15、ews deposit or withdraw money,Part I : Speaking Activity,Activity 3: Questionnaire Direction: Form groups with your classmates. Choose one as the question master in your group. The question master ask a member one question and then move on to another group member to ask the next question. Write down

16、 the members name and take notes on the members replies,Part I : Speaking Activity,Part I : Speaking Activity,convenient a. 方便的, 便利的 account n. 帐户,log in 登陆（网站，计算机系统） cellphone n. 无线电话,New Words they offer a free trial version that you can keep forever. But it is not fully operational, meaning some

17、of the options of the program cannot be used as they are not activated. After you have tried a program and you consider it is fit for your need, then youll have to buy it to protect your computer at its full capacity,Every advantage has its disadvantage,The factory has to increase production to meet

18、 the extra demand,The more we study, the more we discover our ignorance,Text A： Language Points,Part III: Reading Comprehension,He is wearing sunglasses to protect his eyes form the strong sunlight,Freezing winter is harmful to orange trees,He journeyed frequently to Paris and other places,Well cons

19、ider your proposal,Text A： Language Points,Part III: Reading Comprehension,These goods are available to members only,Part III: Reading Comprehension,1. Why is it a good thing that the number of Internet surfers increased,TEXT A，Exercise 1Answers,2. What should people know if they start using the Int

20、ernet,3. Were computer viruses very harmful when they were first designed? Why,4. What are most of the present computer viruses like ,This is a good thing because people are realizing the advantages offered by the world of technology,They should know that if you dont protect yourself, nobody will,At

21、 first, viruses were not that harmful. They were designed to perform a simple task, like flashing a single message onto the users computer screen. Also the spread rate was slow,Now the majority of viruses are programs intentionally written to obstruct with, or harm other programs or computer systems

22、. And they are spreading very fast,Part III: Reading Comprehension,5. In order to better protect users what are included in some antivirus software,TEXT A，Exercise 1Answers,6. How does some antivirus software producers increase the competition of their products,7. What does the free trial version of

23、 the antivirus programs mean ,8. If you want to experiment with the full capacity of some antivirus software what should you do,Some of them have also included a firewall so as to better protect the users,Other antivirus software producers have also come up with a wonderful idea: to offer free scan

24、online,These trial versions include all or most of the softwares features, and are available to be checked out by the user for a short period of time, usually 30 days,After you have tried a program and you consider it is fit for your need, then youll have to buy it to protect your computer at its fu

25、ll capacity,Part III: Reading Comprehension,TEXT A，Exercise 2Answers,1. He journeyed _ to Paris and other places. 2. Occasionally we have _some moneymaking ideas. 3. Mother hens_ their young by instinct. 4. I think if you flip the blue switch near the bottom it will _ the air conditioner. 5. The _of

26、 America was made by Columbus,frequently,come up with,protect,activate,discovery,Part III: Reading Comprehension,TEXT A，Exercise 2Answers,6. The growing _of computer hardware and operating systems often makes them more likely to break down. 7. Their team was punished for _wasting time. 8. Steps must

27、 be taken to prevent the_of influenza. 9. You should take _ of living in a large city where most of the goods are convenient 10. Their language is faced with the _of extinction,complexity,intentionally,spread,advantage,threat,Part III: Reading Comprehension,1. ( ) 笔记本电脑 ( ) 杀毒软件,3. ( ) 调制解调器 ( ) 因特网

28、帐户,2. ( ) 网络销售商 ( ) 网上聊天,4. ( ) 键盘 ( ) 版本,5. ( ) 电脑交友服务 ( ) 服务器,TEXT A Exercise 3 Answers,n,q,j,c,h,f,k,p,d,i,1. 拥有汽车的人数一直在逐渐上升(increase,There has been a gradual increase in the number of people owning cars,2.他想出一个推广产品的好方法 (come up with,3.污染对我们的生存造成一大威 胁（pose a threat to,4.大火迅速蔓延到邻近的建筑物 (spread,5.在业

29、余时间里我利用一切可能的机会参与社会实践活动。（take advantage of,粘贴答案要求一致,Part III: Reading Comprehension,He came up with a good idea for the product promotion,Pollution poses a great threat to our existence,The fire rapidly spread to adjoining buildings,I take advantage of all possible opportunities to participate in soc

30、ial practice in my spare time,Part III: Reading Comprehension,The golden rule in purchasing anything over the Internet is to find out who you are dealing with. Buyers should also pay close attention to the terms and conditions of sale, such as whether there are any hidden extras in the form of deliv

31、ery costs. Of course, it is essential that the firm can guarantee the security of personal information and credit card numbers. Otherwise, you may end up being charged more than you bargained for,TEXT A，Exercise 5,了解交易的对象是上网购物的金科玉律。买方也应该仔细留交易的条款及条件，譬如是否要负担帐面外额外的运送费。当然，最重要的是该公司必须保证能对消费者的个人资料和信用卡号保 密。

32、否则，到头来你被收取的费用可能会大出意料,TEXT B,Advantages and Disadvantages of the Internet,Part III: Reading Comprehension,10年前，大多数人几乎没有听说过互联网。今天，互联网已经成为全世界最强大的信息工具之一。互联网是一个提供各种服务和资源的集合体。几乎所有的家庭都拥有互联网。可是在人们连接到互联网之前，他们有必要了解其利弊。 首先，儿童使用网络已经成为一个大问题。当孩子们在网上和其他人交谈时，他们意识不到与他们交谈的人实际上有可能是会伤害他们的人。不论是在浏览网页，阅读网络新闻，或是在使用电子邮件时，孩子

33、们都可能会接触到极不恰当的网络信息材料。为了保证孩子的安全，父母和老师必须了解这些网络上的危害。积极的引导和保护孩子上网,TEXT B,Advantages and Disadvantages of the Internet,Part III: Reading Comprehension,互联网的另外一个主要缺点是对个人隐私的危害。通过网络发送的电子信息可以很容易地被偷窥和跟踪，找到谈话的双方以及谈话的内容。人们在上网时，会不断的向网站发送信息。同时人们也应该意识到任何收集，出售，或者是分享他们提供在网络上的信息的行为都会增加不法分子窃取个人信息的机会。 除了所有这些可怕的缺点外，网络还是有很

34、多的好处。事实上，利远大于弊。最普遍的就是利用网络来进行调查，研究。孩子和学生们是用网络进行调查，研究最多的人群。现在 学生利用网络来进行调查，研究几乎成了一种规定。在美国30%的老师布置的作业需要在网络上做调查。在教室里66%的老师利用网络来教学。互联网已经成为了做调查，研究的最大来源之一,TEXT B,Advantages and Disadvantages of the Internet,Part III: Reading Comprehension,娱乐是另外一个人们上网的普遍原因。下载游戏，到聊天室聊天，浏览网页是人们已经找到的一些比较流行的网络娱乐方式。互联网上有大量的游戏可供免费

35、下载；因为可以遇到一些有趣的新朋友，所以网上聊天室受人青睐。事实上，互联网已经成为人们寻找人生伴侣的一种途径。而当人们浏览网页时，他们可以找到很多需要的东西。音乐，业余爱好，新闻报导等等内容都能在网上找到。 网络购物已经成为一种非常成功的购物方式，也是互联网的一大优势。不论人们想买什么，都能在网上找到。人们甚至可以足不出户，只用鼠标点击他们想购买的东西，就会有人送货上门了。一些公司通过网络销售赚的金银满钵。 总的来说，今天的社会正处于一个科技繁荣的时期。人们既可以选择利用这个时代的技术优势，也可以任其流逝对于科技的便利视若无睹。尽管互联网是一个很强大的工具，有很多的好处，但人们也需要清楚的意识

36、到他的弊端不能忽视,TEXT B,Exercise,Ten years ago, the Internet was used by most people in the city. ( ) 2. According to the passage , before people connect to the Internet, they need to know how to use the computer. ( ) 3. When children are surfing the web, the parents must keep an eye on them because they m

37、ay probably break down the computer system. ( ) 4. Peoples privacy can be easily tracked through electronic messages sent over the Internet. ( ) 5. In authors opinion, the disadvantages of the Internet outweigh its advantages. (,F,Part III: Reading Comprehension,F,F,T,F,TEXT B,Exercise,6. Scientists

38、 and researchers are among the top people who use the Internet for research. ( ) 7. Chat rooms are popular on the net because users can talk with friends in the room at no charge. ( ) 8. Some companies have made their pile by selling their goods over the Internet. (,F,Part III: Reading Comprehension

39、,F,T,Activity: Brainstorming,Part IV: Applied Writing,Direction: Email has become the premier way to communicate in the computer era. Do you know how to send an Email to your friend? Share your experience with your partner and put the following steps in right order. a. click the Compose Mail or Writ

40、e an Email link b. register to become a member c. pick a website d. put the senders address in “From” box e. Click on the send letter link f. Write your email in the big box g. put the receivers address in “To” box h .Write a subject ( )-( )-( )-( )-( )-( )-( )-(,c,b,a,d,g,h,f,e,Part IV: Applied Wri

41、ting,An email is usually a short document. In order to structure it to improve its effectiveness, pay attention to the following points. 1. Subject field Use this to give your readers an idea of what the email is about. If you send and receive replies, and if the subject changes, then change the con

42、tent of the subject field. It will make your email so much easier to deal with. 2. Salutations In the United States, it is a bad idea to use “sir” or “Mr.” unless you are absolutely certain that your correspondent is male. Similarly, it is probably safer to use “Ms.” Instead of “Miss” or “Mrs.” Usin

43、g someones first name is usually ok. Thus, you can usually get away with a “Dear” and the first name,Tips: How to write an email,Part IV: Applied Writing,Tips: How to write an email,If you are addressing a group of people, you can say “Dear” plus the unifying attribute. e.g.: Dear project Managers,

44、/ Dear San Jose Lasers Fans, 3. Language issues Some people consider email to be informal. Whether it is or not, is irrelevant. Poor writing makes a bad impression. Here are some common failings. Grammar: e.g. and/or, its/its Spelling: e.g. principle/principal, their/there Vocabulary: Dont use long

45、or obscure words for the sake of impression. Short and common words help to make the email easy to understand. Unnecessary information: This wastes a readers time and gets in the way of your message, so be as brief as possible. When you reply to a message, remove all the text that is not needed,Part

46、 IV: Applied Writing,Task,Direction: Write an Email according to the information given below. 收件人：W 发件人：L 主题： 下周末 内容： 以刘明的名义邀请王先生及夫人与你家下周一起到中山公园共度周末。现在那里正是最美丽的时节，已经是鲜花遍地。希望能和他们一起前往,Part IV: Applied Writing,Sample Answer,To: W From: L Subject: Next weekend Dear Mr. Wang, I hope you and your wife have

47、nt any plan for next weekend, as Id like to invite you to spend it with my family at the Zhongshan Park. Its simply the most beautiful season now, with everything in bloom there. We should be delighted if you could join us. Sincerely, Liuming,Gerund（动名词,1,Part V: Grammar,动名词的用法： 1. 作主语 动名词是由动词变化而来，所

48、以，动名词的意义往往是表示某个动作或某件事情。例如： Breathing became difficult at that altitude. 在那个海拔高度呼吸变得很困难。 Reading English aloud in the morning will do you a lot of good. 早晨朗读英文会给你带来许多好处。 应该注意动名词作主语时，对于一些比较长的动名词短语，一般采用It is 和There is 两种句式来表示。例如： It is no use waiting for him any longer. 等他是没有用的,Gerund（动名词,1,Part V: Gra

49、mmar,2. 作定语 动名词作定语的情况并不是很普遍，一般只限于单个的动名词作定语，表示“用于的”或表示“处于某件事情中的”含义。例如： swimming pool 游泳池 reading material 阅读材料 walking stick 手杖 floating needle 浮针 opening speech 开幕词 listening aid 助听器 waiting room 候车室 running water 自来水 3. 作表语 动名词作表语，容易与现在分词作表语相混淆。动名词表语表达的是“某件事”(与不定式短语的意义相近)，而现在分词表语表示“具有某个作用”。例如： His

50、part-time job is promoting new products for the company. （动名词） 他的业余工作是为那家公司推销新产品,Gerund（动名词,1,Part V: Grammar,4. 作宾语 动名词跟在及物动词后做宾语。例如： He managed to escape suffering from the disease. 他设法避免患那种疾病。 After hearing the funny story, all of us couldnt help laughing. 听完了那个滑稽故事，我们忍不住大笑了。 英语中，在介词后面也可以用动名词作宾语。

51、例如： Im looking forward to your coming next time. 我期待着您下一次的到来。 They are against using so many animals in experiments. 他们反对用如此多的动物去做试验。 5作同位语 动名词也可以跟在名词后对名词进行修饰，限定或说明。例如： His habit, studying at night, remains unchanged. 他夜间学习的习惯始终没有改变。 That was her favorite pastime, playing bridge. 这就是他最喜爱的活动打桥牌,Group

52、 work,2,Part V: Grammar,Direction: Form groups with your classmates. Each group tries to find as many solutions as possible to solve the following “complicated” problems. Use the form “by +verb+-ing” to express your solutions,Answers,3,1. Can you imagine yourself staying in a lonely island? (stay) 2

53、. I cant understand your laughing at that poor child. (laugh) 3. She didnt mind working overtime. (work) 4. To make a living, he tried writing_, painting, and various other things, but he had failed in all. (write, paint) 5. We are looking forward to Marys coming. (come) 6. She was praised for having saved the life of the child. (save) 7