Unit 3 Computers,.,2,First, lets play a game!,What are they ?,Huge computer,PC (personal computer),laptop(notebook computer),PDA (personal digital assistant),robot,Similarity?,Theyre computers in different stages.,Whats next?,i- robot (intelligent robot),WHO AM I ?,Unit 3 ComputersReading,Unit 3 Computers reading,.,9,Task1 Look at the pictures and the title of the reading passage. Predict what it is going to be about.,Prediction,.,10,Task2 Look at these inventions. Put them in order according to the time when 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,.,11,While-reading,The development of computers.,Step 2 Just have a fast reading,Find out topic sentences 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!,Read Para. 1 in 2 mins and find out the development histoty of computers. Ill give you some clues.,a calculating machine, in 1642,an analytical machine, (in 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,ENIAC,Para. 2,technical words,Memory: storage or storage capacity as of a computer, disk, etc.,chip,transistor,tube,network,The World Wide Web,These changes only became possible as my memory improved.,tubes transistors small chips network World Wide Web,more and more powerful!,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.,communications finance trade robots mobile phones medical operations space rockets exploring the Moon and Mars,Anyhow, my goal is to provide humans with a life of good quality.,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: _; _; _; _; _; _; _.,Who am I？,1642,France,Alan Turing,huge,smaller and smaller,analytical,calculating,universal,laptop,PC,tubes,transistors,chips,communication,finance,robot,mobile phone,space rocket,medical operation,trade,huge computer,.,26,Writing skills,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+支撑细节）,How do we use computers in daily life?,communication,entertainment,information,work and job,commerce/ finance online,communication,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/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 ,.,34,Summary,I, the c_, was 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,niversal,olve,C,aptop,omes,.,35,Many changes have happened to my s_, so my s_ totally 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,.,36,Discussion,Should high school students surf the internet(上网)?,I think high school students should surf the internet because(first, secondly, thirdly) I think high school students should not surf the internet because(first, secondly, thirdly),.,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 lot of useful things,.,38,Disadvantages Some people especially the teenagers abandon (沉迷于) themselves to the computer games and chatting on the Internet. As a res