新编英语教程Book 4 Unit5

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第五单元:Network Designer-Tim Berners-Lee学生人数:34授课地点:311教室授课学时:8学时教学目的与要求:理解Tim burners-lee创建W orld wide Web的过程。

要求学生熟练讲述课文。

熟记相关词汇。

教学过程:I.Oral presentation.II.Ss introduce what they got about the author and the internet.Ss get the main idea the text.Go over the vocabularyIII.Discussion—groups first, then the whole class.IV.Text structure.nguage points.VI.Text twoVII.Exercises.VIII.QuizUnit 5(8 hours)TEXT I Network Designer-Tim Berners-LeeI. Pre-reading QuestionsThe students may be asked a number of questions such as the following before they make their guesses.1. What nationality is Tim Berners-Lee?2. Is he a university graduate?3. When did he begin to take an interest in the computer?4. Did he work in a research institute specializing in computer science?5. Was he given the assignment of designing the World Wide Web ordid he hit upon the idea just by accident?6. What was it that made WWW a reality?II. Terms⏹The internet: an international computer system that link bothbusiness and private users⏹Hit: an instance of successfully locating an item of data in thememory bank of a computer.⏹Mouse: a computer input device⏹Modem: A device that converts data from one form into another, asfrom one form usable in data processing to another form usable intelephonic transmission. Also called data set调制解调器:将信号由一种形式转换成另一种形式的装置,如在电话传输中由一种可用形式以信号形式转换成另一种可用形式也作data set●Protocol: A standard procedure for regulating data transmissionbetween computers.【计算机科学】规程:为管理调整计算机间数据交流的标准程序●Packet switching: A method of data transmission in which smallblocks of data are transmitted rapidly over a channel dedicated to the connection only for the duration of the packet's transmission.小包交换:一种资料传送方法,其中小包的资料在一通道内被迅速传递,小包传递期间有专用的网路连接●Hypertext: A computer-based text retrieval system that enables theuser to provide access to or gain information related to a particular text.超文本:一种计算机的文本查寻系统,此系统能够给使用者提供与某一特定文本相关的信息●Database: A collection of data arranged for ease and speed ofsearch and retrieval. Also called data bank数据库:进行快速简便搜查和检索而组织的数据集合也作data bank●HTML: Hypertext Markup Language, 超文本链接标示语言●HTTP: Hypertext Transfer Protocol, WWW服务程序所用的协议●Browser:●The w3 consortium:Some information about the Internet“英国人改变世界”——World Wide Web发明者Tim John Berners-Lee早上起床,泡上一杯咖啡,坐到电脑前打开浏览器看新闻——这是很多人每天的例行公事。

当我们陶醉于在链接之间自如跳转,是否也曾经偶尔好奇过:到底是谁想出了这聪明的信息发布方式?在我们迅速将这个“无聊”的问题抛诸脑后时,那可敬的发明者却仍然继续为WWW的未来努力工作着。

不过,他已不是孤身一人,而是领导着整个W3C。

Image:Bernerslee.jpg他,就是Tim John Berners-Lee,World Wide Web的发明者。

Tim 1955年6月8日生于英国伦敦。

在牛津大学女王学院读书时,他曾用M6800处理器和旧电视自己攒了一台计算机。

1976年毕业后,他先后受雇于Plessey Telecommunications Ltd、D.G Nash Ltd两家公司。

在D.G Nash,Tim曾写过一个多任务操作系统,但真正开启未来之门的,却是之后在CERN工作的一年半。

CERN(European Particle Physics Laboratory,欧洲量子物理研究所),位于瑞士日内瓦。

在那里,为了工作需要,Tim写了一个从未发布过的工具Enquire——这个我们无缘得见的Enquire,正是World Wide Web的雏形。

不过在此之后Tim就到John Poole's Image Computer Systems Ltd进行实时控制固件方面的开发工作去了。

1984年,当Tim 获得奖学金,重新回到CERN之后研究实时系统,他逐渐发现CERN内部沟通机制存在信息漏失的弊端。

今天我们可以找到的关于WWW概念的第一份公开文件,是Tim于1989年3月写给CERN的建议书:Information Management: A Proposal。

在这份文件中,Tim提出利用Hypertext(超文本)构造链接信息系统的设想。

同样,我们也可以从文件中看到“Browser(浏览器)”概念的最初提出。

Image:Firstguibrowser.jpg图二最早的浏览器这时Tim已经开始在Enquire的基础上,基于NeXTStep系统开发第一个真正意义上的Web Server——httpd、第一个客户端浏览器——WorldWideWeb,之后又在1991年建立并开通第一个WWW网站http://info.cern.ch/ (该网站至今仍然是CERN的官方站点)。

到1993年,Tim再接再厉,制定了URI、HTTP、HTML等的第一个规范。

1994年,Tim加入位于麻省理工大学的LCS(计算机科学实验室)。

为了让World Wide Web不被少数人所控制,Tim组织成立了World Wide Web Consortium,即通常所说的W3C,致力于“引导Web发挥其最大潜力”。

我们所熟知的HTML协议各个版本,都出自W3C会议。

可贵的是,W3C的HTML规范是以“建议”的形式发布,并不强迫任何厂商或个人接受。

至于微软利用HTML协议的开放性扩展自有标准,打败Netscape,应该是Tim 始料未及的了。

《时代》杂志在评价Tim的贡献时这样写道——“和其它影响世界的发明不同,这项发明的确应该归功于一人……Berners-Lee设计了World Wide Web,然后就把它开放给世界。

他比其他任何人都更努力地保持WWW的开放性、非营利性和自由性……很难对WWW 做出适当评价,它几乎可以媲美古登堡印刷术。

Berners-Lee一手把只有精英们掌握的通讯系统变成了大众媒体。

”这段话实实在在并非溢美之词。

Eric Schmidt也曾说过:“如果计算机网络是一门传统科学,Berners-Lee早该获诺贝尔奖了。

”我想,Tim本人不会在意这个。

当他把上个世纪最伟大的传媒界发明完全无偿地奉献给全世界,天堂已准备好一双洁白的翅膀。

Tim Berners-Lee是一位具有极高创造力的程序员,但更是一位品格高尚的盗火者。

在《织网(Weaving the Web)》一书中,Tim提出三个观点:◎编辑Web与浏览Web一样重要,Wiki是向正确方向踏出的一步。

◎ Internet的任何表现形式都应该呈网状,而非树形结构。

域名系统例外。

◎计算机科学家在技术层面和道德层面都负有不可推卸的责任。

也许我们可以从这些论断中获益良多,也许只当它是无稽之谈。

不管如何,Tim Berners-Lee发明了World Wide Web,并继续在为之做出贡献。

这,就已足够。

II. The Main IdeasAnswers for reference:1. Access to the Internet which gives people information of all kinds seems a matter of course.2. World Wide Web, which began as a little computer program nearly20 years ago, was the work of Tim Berners-Lee alone.3. Having designed a kind of “hypertext”notebook which linkedvarious kinds of information on his own computer, Berners-Leewanted to open it up to everyone who would like to link their stuff to his.4. Berners-Lee devised HTML, URL and HTTP, all of which finallybrought the World Wide Web to fruition in 1991.5. Brought up as a quintessential child of the computer age,Berners-Lee created a most significant global system.6. In spite of his Gutenbergian creation of the WWW, Berners-Leechose the non-profit road, both for himself and for his creation.II. Teaching Points for Reference1. It turns out you can “enquire”about nearly anything (I)happens that you can ask about almost anything…Turn out meaning “happen to be, or be found to be”is usuallyfollowed by a noun or an adjective. It may also be followed by a that clause. Examples:Much to his disappointment, his experiment turned out a failure.After a long spell of rain, it turned out to be fine and sunny on the day of our sports meet.It turned out that the unexpected visitor was one of my mother’s former students.2. …access to the Internet—the opportunity to use the Internet. Access meaning “the means or opportunity or right to use or see something”is followed by the preposition to.Examples:In a university library, we have access to large numbers of academic books.In our country every child has access to education.3. Thomas Edison got credit for the light bulb—Thomas Edison received recognition for the light bulb. Credit for something is the recognition or respect or praise given to someone because of something they have done or achieved. Examples:We gave W ang credit for his remarkable achievements in biotechnology.Tim Berners-Lee should be given credit for the creation of WWW.Credit should go to Frank for the team’s success.4. It started, of all places, in the Swiss Alps.Of all places, of all things, or of all people are used to suggest that a particular place, thing, or person seems surprising or unlikely when there are many other places where something might happen, many other things which might be expected to be done, or many other people who might be present or be doing something. Examples:Of all places, they went vacationing in an unknown village.Of all things, she bought an ordinary bowl as a souvenir.I can’t understand why she, of all people, should speak to us about how to use the computer.5. … that dealt with information in a “brain-like”way —that handled information in the way as the brain does. Deal with is used in different ways with different meanings.Examples:Mark is very smart. He can deal with (handle) all kinds of difficult situations.Recently I read an article which dealt with (concerned / wasconcerned with) the latest developments in computer science.Be cautious about what kind of business firms you deal with (do business with).6. keep track of all the random associations one comes across…Keep track of means “keep oneself informed about something”or “pay attention to something so that one knows what is happening.”Example:We read newspapers every day to keep track of current events.The opposite of keep track of is lose track of. Example:We’ve lost track of him since he left Shanghai for home.Random means “unplanned, unintentional, aimless, purposeless, etc.”Examples:While everyone was discussing the question seriously, John made a few random remarks now and then.He was whiling away his time by putting down some randomthoughts on paper.At random is used adverbially. Examples:He put the books on the bookshelves at random (i.e., without putting them in any order).She chose a number of books at random to lend to her neighbor.7. The rest of the world may be trying to cash in on the Web’s phenomenal growth…—Other people may be trying to take advantage of or make a profit from the unusually fast development of the Web…Cash in on means “take advantage of or make a profit from a situation in a way that is unfair.”Example:The only shop in that out-of-the-way village cashed in on the shortage of everyday necessities by putting up prices.TEXT ⅡAngels on the Internet.Questions1. What was the problem that Deng Y ongxin had? What e-mail did he send on the Internet?2. Who was the first person that responded to Deng’s e-mail and whate-mail did she send out?3. Who was Dr.Juan Alejos? What did he offer to do to help Shao-Shao?4. Who was it that made it possible for Y ongxin and Han Dan to take Shao-Shao to the United Sates for treatment? What did she do?5. Who was Dr. Hillel Laks? What did he do to help Shao-Shao? Was he successful in his attempt?6. Who are the angels on the Internet? Why are they called angels?。