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1、Unit 1 Reading The evolution of video and sound devices,What are they?,TV sets,Leading-in,What did the first TV in your home look like? What was the picture like? What does the TV you are using now look like? What was the picture like?,What audio devices do you choose to enjoy music? What functions
2、else do you need in an audio device besides playing music?,Do you want to know more about video and sound devices?,Lets know more about these,Fast Reading,Read the text quickly and answer the following questions in Part A .,1. Who developed the system used for most early TV broadcasts? John Logie Ba
3、ird 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.,Detail Reading,1. Colour TV became popular within just a few years after it was invented. ( ) 2. People without satellite dishes do not benef
4、it at all from satellite TV broadcasts. ( ),Reading (Part C1):,F,F,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
5、date. ( ),T,F,T,The first recording of a human voice was made.,Emile Berliner invented a record player that used discs to record on.,Reading (Part C2):,The first public TV broadcasts were made in the USA.,Regular public broadcasting began in London.,The first colour TV programme was broadcast.,Satel
6、lites 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.,Headings appear before each section of a text, they can give your more information about the text. They can show you how a text is organized.,Read
7、ing Strategy,You may not need to read the whole text if you can find what you are looking for under one or two headings.,TV (In order of time),Early history of TV,The modern age: satellite TV,Early history of sound recorders,Sound and video recorders,Sound and video go digital,Sound and video record
8、ers (in order of time),If you could own only one electronic device, what would you choose? Why?,Discussion,More and more people are using computers for information and entertainment. Do you think we still need books and TVs in the future? Why or why not?,What are some possible disadvantages of havin
9、g a lot of technology in our lives?,Keys for activity D. 1. _ 2. _ 3. _ 4. _ 5. _ 6. _ 7. _ 8. _,e,d,h,c,f,a,b,g,Keys for activity E. 1. _ 2. _ 3. _ 4. _ 5. _ 6. _ 7. _,foresaw,drawbacks,constructed,delayed,percentage,receiver,Eventually,Language Points,contribute to 把贡献给；有助于 ；促成 例:He contributed a
10、lot of money to the charity. 他捐很多钱给慈善机构。 I contributed several poems to a literary magazine. 我投了几首诗给一本文学杂志。,翻译下列句子。 1. 充足的新鲜空气有助于身体健康。 2. 司机的粗心大意造成了这次事故。,Plenty of fresh air contributes to good health.,The drivers carelessness contributed to the accident.,2. delay v. & n. 耽搁，延迟 delay sth. / doing st
11、h. 推迟（做）某事 delay in doing sth 没有及时做某事 without delay=quickly 毫不迟延地,易混辨析：delay，put off 在表示“推迟某事”时可以互换。 The flight was delayed / put off due to the bad weather. 由于天气不好，航班被推迟了。,但它们又有细微差别： （1）delay强调因某种困难或障碍厌恶，动作主体是人或困难本身，延迟的时间不确定，也可能无限延迟。 My grandma fell ill all of a sudden, which delayed our trip. 奶奶突然
12、病倒了，延迟了我们的旅行。,（2）put off强调“拖延时间”，指因客观原因造成的拖延或主观上的有意拖延。 youre always putting off things. You should get rid of this bad habit. 你做事总是拖拉，你得克服这个坏习惯。,填空。 我们的飞机因大雾而延迟了。 拖了那么久，他终于完成了论文。 我的医生劝我立即戒烟。,Our plane _ by the heavy fog.,was delayed,_, he finished his paper at last.,After much delay,My doctor advise
13、d me to give up smoking _.,with delay,3. electric adj. 电的;电动的; 用电的； electrical adj. 电的；电气科学的； electronic adj. 电子的 e.g. an electric fan/blanket an electrical engineer an electronic music,4. distribute vt. 分发；分销；使分布 distributeover 把分配到 distribute sth. to 把某物分配给 distribute sth. among 把某物分配给,易混辨析：distri
14、bute, divide 都有“分配”的意思。 distribute指“将某物分成一定的部分或数量，通常各份的数量不一定相等，然后分给某些人或地方”。 distribute leaflets 分发传单 divide指“把整体分成若干部分”。 divide it into two 把它分成两份,填空。 （1）这笔款项是在本地区的学校中 分配的。 （2）一个句子可以划分成有意义的 各个部分。,The money _ schools in the area.,was distributed among,A sentence can _ meaningful segments.,be divided
15、up into,John Logie Baird constructed the first colour TV in 1928, but it was not until 1938 that the first colour TV programmer was broadcast. 约翰洛吉贝德尔于1928年制造出第一台彩色电视机，但知道1938年第一个彩色电视节目才播出。,难句解析,分析 句中but后面的it was not until 1938 that是强调句型，对时间状语not until 1938 加以强调。,2. However, most people still benefit from satellite TV, as local TV companies broadcast the signals they get from satellite receivers to the population living nearby.,然而，大多数人仍然收益与卫星电视，因为当地的电视公司把从卫星接收器接收到的信号波送给附近的居民。,句中as引导一个状语从句，在此句中， they get from satellite receivers是定语从句，修饰前面的th
