人教版BOOK 2第三单元Who am I课件（经典实用） (2)

1、 人教版BOOK 2第三单元Who am I 课件 2 vUnit 3 Computers reading 人教版BOOK 2第三单元Who am I 课件 9 Task1 Look at the pictures and the title of the reading passage. Predict what it is going to be about. Prediction 人教版BOOK 2第三单元Who am I 课件 10 Task2 Look at these inventions. Put them in order according to the time when

2、they appeared. After reading the passage, check to see if you were right. () analytical machine () laptop () calculating machine () robot () PC() universal machine 2 1 4 5 6 3 人教版BOOK 2第三单元Who am I 课件 11 While-reading The development of computers. Step 2 Just have a fast reading Find out topic sente

3、nces of each paragraph. Over time I have changed quite a lot. These changes only became possible as my memory improved. Since the 1970s many new applications have been found for me. Step 3 More detailed reading! 1936 (1822) Latter And latter a calculating machine, in 1642 an analytical machine, (in

4、1822), Charles Babbage a universal machine, in 1936, Alan Turing a huge computer, as large as a room, in 1940s a personal computer and a laptop, and used in offices and homes since the 1970s a calculating machine, in 1642 帕斯卡计算器是由布莱 斯帕斯卡(Blaise Pascal)发明的，帕斯卡 计算器可以把一长串数 字相加，在他的计算器 中有一些互相联锁的齿 轮，一个转过十

5、位的齿 轮会使另一个齿轮转过 一位，人们可以像拨电 话号码盘那样，把数字 拨进去，计算结果就会 出现在另一个窗口中。 an analytical machine, (in 1822) 分析机是由英国 数学家查尔斯巴 贝奇设计的一种 机械式通用计算 机。它的设计逻 辑却非常的先进， 是大约100年后电 子通用计算机的 先驱。 a “universal machine”, in 1936 (not a real machine, but just a mathematical model) a huge computer, as large as a room, in the 1940s 尺寸（英

6、尺） 3050电容(个)10000 重量（吨）30开关(个)6000 真空管(个)18800耗电（W）150000 电阻(个)70000成本（1940年） $40万 ENIAC technical words vMemory: storage or storage capacity as of a computer, disk, etc. The World Wide Web These changes only became possible as my memory improved. v tubes v transistors v small chips v network v Worl

7、d Wide Web Para.3 Find some supporting details for the topic sentence.1 minute. Since the 1970s many new application have been found for me. Since the 1970s many new applications have been found for me. v communications v finance v trade v robots v mobile phones v medical operations v space rockets

8、v exploring the Moon and Mars Name : computer Born : (time)_ (place) _ My real father: _ My size: 1._( in the past) 2._(modern) My history: 1. 1642 _machine 2. 1822_machine 3. 1936 _machine 4. 1940s _ 5. 1970s _ and _ My memory: _ _ _ My applications: _; _; _; _; _; _; _. 1642France Alan Turing huge

9、 smaller and smaller analytical calculating universal laptopPC tubestransistorschips communicationfinance robot mobile phone space rocket medical operation trade huge computer 人教版BOOK 2第三单元Who am I 课件 26 Paragraph 2Paragraph 3 These changes only became possible as my memory improved. Since the 1970s

10、 many new applications have been found for me. Supportin g details lcalculating machine lanalytical machine luniversal machine lPC ltubes ltransistors lsmall chips lcommunications lfinance ltrade lrobots lmobile phones lMedical operations lspace rocket Paragraph 1 Topic sentence Over time I have bee

11、n changed quite a lot. personification（拟人） narrative perspective: first-person narrative（叙述角度：第一人称角度） chronological order(时间顺序) main ideas and supporting details （主旨（主旨+支撑细节）支撑细节） How do we use computers in daily life? communication entertainment information work and job commerce/ finance online com

12、munication chatting sending E-mails expressing ideas online making new friends entertainment playing games watching movies listening to music information reading news searching for useful information, such as price information, job information and so on asking questions and seeking for help commerce

13、/finance online shopping online transferring accounts paying all kinds of bills, such as water & electricity fees, cell phone fees and so on speculating in stocks online work and job using computers to do jobs applying for jobs online doing research 人教版BOOK 2第三单元Who am I 课件 34 Summary I, the c_, was

14、 a calculating machine in 1642 in F_. In 1936, I became a “u_ machine” to s_ any mathematical problem. Since the 1970s I have been used first as a P_ and then as a l_ in office and h_. omputer rance niversalolve Captop omes 人教版BOOK 2第三单元Who am I 课件 35 Many changes have happened to my s_, so my s_ to

15、tally changed. I have been widely used in many fields, I have also been put into robots to e_ the Moon and Mars. ize hape xplore 人教版BOOK 2第三单元Who am I 课件 36 Should high school students Should high school students surf the internet(surf the internet(上网上网)? )? I think high school students should surf

16、the internet because(first, secondly, thirdly) I think high school students should not surf the internet because(first, secondly, thirdly) 人教版BOOK 2第三单元Who am I 课件 37 Advantages We can communicate with friends Listen to the music See films & watch news Play games Do shopping Save a lot of time Do a

17、lot of useful things 人教版BOOK 2第三单元Who am I 课件 38 Disadvantages Some people especially the teenagers abandon (沉迷于沉迷于) themselves to the computer games and chatting on the Internet. As a result, they have little time to study . Some people use the computer wrongly. If you spend too much time on it, it will do harm to our health. 人教版BOOK 2第三单元Who am I 课件 39 ConclusionConclusion There is no doubt that computer has two sides, too. If we make good use of it, it will make our liv