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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit 1,Reading,The evolution of video,and sound devices,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。,略读(skimming)只看文章标题、下标题以及每个局部或者段落第一行,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,运用扫读(scanning)迅速浏览从第三句开始的后面局部,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参加其它重要的信息。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,certain,information,titles and headings,the first and last,sentences of paragraphs,the first and last paragraphs,pictures and charts,Scan the text for,key words and phrases,dates,etc.,Do not need to,read the whole,text.,Reading,strategy,Understanding headings,appear before each section of a text,show how a text is organized,give 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 TV,The modern age,:satellite TV,Sound&video,recorders,(in order of time),Early history of sound recorders,Sound and video recorders,Sound 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,Reading 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 years after it was invented.,2.People without satellite dishes do not benefit at all from satellite TV broadcasts.,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offer as good a sound quality as CDs.,5.New technology will soon make many of the things talked about in the article out of date.,Scanning,1.Colour TV became popular within,just a few years after it was invented.,2.People without satellite dishes do not,benefit at all from satellite TV,broadcasts.,Reading Comprehension III,Scanning,wasnt popular until 1938,still,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 soon make many,of the things talked about in the,article out of date.,steel tape or paper tape,Work out the timeline for the development of video and sound devices.,Year,Event,1877,The first recording of a human voice was made.,1887,1925,Emile Berliner invented a record player that used discs to record on.,The first public TV broadcasts were made,in the USA.,1929,1938,1962,1967,1982,1993,1995,Regular public 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 increasingly 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,principle,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,adaptation,2.Chinese-English,演变,缺点,制造,存储,专利权,转播,疑心的,百分比,预见,When finished,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 percentage,eventually delayed receiver foresaw,With the patent of the telephone in 1876,people could now have a conversation with each other over a 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 real 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 radio 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.(
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