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1、Before the class,You are supposed to be engaged in the material and in whatever it is that we are discussing in class,not necessarily thinking about getting down every word that I say.,Id like you to take active notes rather than passive notes.Write down what can make you feel or learn something.,Be
2、tter attention,better understanding of the material if you are actively engaged.,Better attention,better understanding of the material if you are actively engaged.,You are supposed to be engaged in the material and in whatever it is that we are discussing in class,not necessarily thinking about gett
3、ing down every word that I say.,Id like you to take active notes rather than passive notes.Write down what can make you feel or learn something.,1.What did the first TV in your home look like?How big was it?What was the picture like?2.What does the TV you are using now look like?How big is it?What i
4、s the picture like?3.What are the differences between tape recorders,CD players,MD players and MP3 players?,Thinking,Unit 1,Reading,The evolution of video and sound devices,Review,Words and expressions,单词回顾,学生早读时已预习过本单元单词，可利用几分钟时间带学生快速回顾温习。对单词的熟练度越高，阅读的速率也越高。,Words Review,evolutiondrawbackprinciplec
5、onstructdelayaccessible,n.演变，发展，进化n.缺点，缺陷，不利条件n.原理，法则，道德原则，行为准则vt.制造，修筑，建造vt.&vi.（使）推迟，延迟n.延误，延迟adj.可使用的，可接触的，可到达的，易理解的,Words Review,distributepercentagereceivertubedisc,vt.使分布，分散；分发，分配，分销n.百分率，百分比n.无线电接收机，听筒，受话器，接受者n.管子，管状物，伦敦地铁n.唱片，（计算机）磁盘,windcomponenteventuallyportablecassette,Words Review,vt.&v
6、i.上发条，缠绕，蜿蜒，曲折n.组成部分，成分，部件adv.最后，终于adj.便携式的，轻便的n.盒式磁带，卡式磁带,digitalstorageforeseepatentadaptationrelaysceptical,Words Review,adj.数码的，数字式的n.存储，储藏（空间）vt.预料，预见，预知n.专利权，专利证书n.适应，改编本，改写本vt.播放，转播；接转，转发n.接力赛，中继设备adj.怀疑的,black-and-whitesatellite dishwind up,n.卫星电视碟形天线上发条adj.黑白的,Match,To master some basic kno
7、wledge of how to understand headingsTo gain some information about the history,the current situation and the future improvement of video and sound devicesTo master the words and expressions in this reading text,objectives,Reading Tips,阅读时，可根据阅读任务的不同，综合运用略读(skimming)与扫读(scanning)。提高快速阅读水平。,Skimming a
8、nd scanning,Skimming and scanning are two fast reading skills to help to browse text and extract the key points.The skills require practice,but once you have got the hang of them youll find you can get through a substantial amount of reading in quite a short time.These reading methods make it easier
9、 for you to grasp large amounts of material,especially when youre previewing.They are also useful when you dont need to know every word.,略读(skimming)只看文章标题、下标题以及每个部分或者段落第一行，关注文章中反复出现的关键词。略读时，要用充足的时间读懂段落的第一句和第二句，因为第一句往往是该段的主题句(topic sentence)，而第二句往往是对前句的延伸(extension)或进一步的解释(explanation)。,通过略读把握文章大意,运
10、用扫读(scanning)迅速浏览从第三句开始的后面部分,搜寻作者对开头两句的支持句(supporting sentences),并同时注意文章中间是否有转折词(transition),因为这些词常常会把文章的思路逆转或加入其它重要的信息。当读到段落的最后一句时,我们又要使用略读,这时必须再次放慢速度(slow down your pace)直到完全消化作者对段落的小结(conclusion),因为该小结有可能与主题句截然相反或引导读者进入下一个段落。,通过扫读寻找特定信息或特定词组,Reading strategy,skimming,scanning,a general idea,certa
11、in information,titles and headings,the first and last sentences of paragraphs,the first and last paragraphs,pictures and charts,Scan the text forkey words and phrases,dates,etc.,Do not need toread the whole text.,Readingstrategy,Understanding headings,appear before each section of a textshow how a t
12、ext is organizedgive an idea as to the contents of each section,Headings,Can you figure out how the text on Pages 2-3 is organized?(Skimming),TV(in order of time),Early history of TVThe modern age:satellite TV,Sound&video recorders(in order of time),Early history of sound recordersSound and video re
13、cordersSound and video go digital,The future,How this text is organized?,Skimming for general ideas,The information in this article is organized _.A.by paragraphs B.in order of place C.by concepts D.by sub-topics,team work,Reading Comprehension I,Skimming,Scanning for specific information,Scanning,R
14、eading Comprehension II,1.Who developed the system used for most early TV broadcasts?John Logie Baird.2.Who made the first recording of a human voice?Thomas Edison.3.What were developed by the late 1960s?Portable cassette players and video recorders.,1.Colour TV became popular within just a few year
15、s after it was invented.2.People without satellite dishes do not benefit at all from satellite TV broadcasts.,Reading Comprehension III,Scanning,3.Some of the first tape recorders used plastic tape to record on.4.Records and cassettes do not offer as good a sound quality as CDs.5.New technology will
16、 soon make many of the things talked about in the article out of date.,Work out the timeline for the development of video and sound devices.,Reading Comprehension IV,Emile Berliner invented a record player that used discs to record on.,The first public TV broadcasts were made,in the USA.,Regular pub
17、lic broadcasting began in London.,The first colour TV programme was broadcast.,Satellites were used to broadcast TV.,Regular colour TV broadcasts began in the UK.,The first CDs were made available.,The VCD was born.,The DVD was invented.,Undoubtedly,both TV and audio devices will play an increasingl
18、y important role in our future life.What other functions would you like them to have in the future?,TV,Do you think we may have a TV-wall in the future?,Time for reflection,1.You can obtain information quickly in a text by understanding the headings.,2.Think about the meanings:evolution,drawback,pri
19、nciple,delay construct,distribute,receiver,tube wind up,keep pace with,text massage keep in touch with,satellite dish,Now 2 mins to test your spelling.,Spelling Bee,1.English-Chinese wind up,receiver,component,portable,digital,cassette,adaptation2.Chinese-English 演变，缺点，制造，存储，专利权，转播，怀疑的，百分比，预见,When f
20、inished,exchange your papers to see who does the best.,请点击word图标,Quiz I:Fill in the blanks with words given in the box.(P5 Part E),constructed drawbacks percentageeventually delayed receiver foresaw,With the patent of the telephone in 1876,people could now have a conversation with each other over a
21、long distance.Many engineers(1)_ that it would be possible to send electrical signals through the atmosphere without relying on,foresaw,telephone wires.Some important breakthroughs in the development of radio were made by Nikola Tesla in the USA in 1891.However,Teslas work had many(2)_.The first rea
22、l radio was(3)_ by Guglielmo Marconi,an Italian,in 1896.Early radios just sent signals made up of dots and dashes.It was not until 1906 that adaptations were made so that radio could relay conversation and,drawbacks,constructed,music.Since people were sceptical that the public would want to hear rad
23、io broadcasts,the building of radio stations was(4)_.Only a very small(5)_of radio stations were built before 1920.however,most people had access to a radio(6)_ by the late 1920s and early 1930s.(7)_,radio became the primary means of getting news and entertainment.,delayed,percentage,receiver,Eventu
24、ally,Quiz II:认真阅读课文的Reading部分，并根据所读内容在空格处填入最恰当的单词。每空一词。,The evolution of video and sound devices,Early history of TVIn 1925,the first public TV broadcasts were made in the USA.In 1928,the first long-distance TV broadcast was made.,Television,Many people made(1)_ to the development of TV.The years be
25、tween 1928 and 1951(2)_ the development of color TV.,The modern age:satellite TVIn 1962,satellites were used to broadcast TV.People who live far away from cities have(3)_ to TV signals with the help ofsatellite dishes.,contributions,witnessed,access,Sound and video,Early history of sound recordersIn
26、 1877,Edison first(4)_ a human voice.Emile Berliner invented a record player using discs as(5)_ to tubes.,Sound and video recordersIn 1928,the first tape recorders were made in Germany.,recorded,alternatives,In the early 1950s,tape recorders began using plastic tape instead of(6)_ or paper tape.,Sou
27、nd and video go digitalIn 1982,the first CDs were made(7)_.In 1993,the VCD was born and the DVD was invented in(8)_.,steel,available,1995,The futureNowadays sound and video can be stored on a PC,on the Internet,or using some form of(9)_ storage.Technology is changing fast,and its future is(10)_ our
28、imagination.,portable,beyond,Quiz III.根据短文内容和所给首字母提示，补全所缺单词。Thomas Edison was born in Milan,Ohio,on February 11,1847.He is(1)h_ by people as“king of the invention of the world”.It is(2)e_ difficult to find anyone living today who has not(3)b_ from his inventions.Almost everyone has at least seen an(
29、4)e_light.,honored,extremely,benefited,electric,In the summer of 1869,the Western Union Telegraph Company asked Thomas Edison to improve a(5)d_ that was used to send financial information.After he made several(6)i_ to the device,thecompany paid him 40,000 dollars for his effort.This large(7)a_ of mo
30、ney(8)p_ Mr.Edison to start his own company.He announced that the company would improve existing devices and also work on new inventions according to orders.,device,improvements,amount,permitted,Edison was(9)o_ in thinking and creating new things all his life.It was all his hard work and great(10)a_
31、 that helped him win honor from people all over the world.,occupied,achievements,Preview,Preview Word power about electronic and electrical goods on Pages 6 and 7Preview Grammar and usage on Page 8,Homework,Read the passage again and review the new words and expressions.2.发挥想象，连词成文(50-100字).,evolution,drawback,principle,delay,distribute,wind up,component,portable,digital foresee,patent,sceptical,Thank you!,
