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Unit 3 Computers,keyboard,mouse,monitor,screen,speaker,host computer,What do they have in common?,An abacus,A calculator,A desktop,A notebook computer,digital camera,a laptop,palmtop,Reading: Who am I?,Listen to the tape and answer these questions.,2 Who was the first person to invent the earliest computer? 3 Who was the next important person to design computers?,Charles Babbage,Alan Turing,1 Who am I?,A computer.,timeline,1642: The computer began as a calculating machine. 1822: the Analytical Machine was built by Charles Babbage. 1936: Alan Turing wrote a book to describe how computer could be made. 1960s: Computer had new transistors and became smaller. 1970s: Computers were brought into peoples homes. Now: Computers connect people all over the world together.,Scanning,Calculating machine,Computer,Internet,Analytical machine,Artificial intelligence,Universal machine,The development of computers:,Useful phrases,calculating machine Analytical machine card with holes technological revolution universal machine artificial intelligence go by by internet human race,计算器 分析机 穿孔卡 技术革命 万能机,通用机器 人工智能 走过，过去 通过网络 人类,The development of computers:,Calculating machine,Analytical machine,Universal machine,Artificial intelligence,Computer,Internet,Intensive reading: Underline the phrases &sentences that you think are important,Star sentences,P1 L2 I followed instructions from cards with holes. P1 5 Earlier I was not very big, but then I became huge. P1 L6 However, people thought I was simple-minded until they discovered I had “artificial intelligence.”,我执行穿孔卡的指令,早些时候我并不是很大，但是后来我变得非常大,可是，人们认为我头脑简单， 直到发现我有人工智能时， 他们才不那么想了。,P1 L8 As the years have gone by, I have been made smaller and smaller. P2 L1 There were times when my size was totally changed. P2 L3 But I was always so lonely standing there by myself,until in the early 1960s,they gave me a family connected by a network.,随着岁月的流逝， 我被做得越来越小了,有段时期我的体积完全变了,但是我总是孤孤单单地站在那里，直到60年代初， 人们才 给了我一个用网络连接的家庭。,Summary: what have we learned?,1.some words about computers. 2 the development of computers 3 some scientists relating to computers.,Advantages and disadvantages of the computers.,Discussion,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,Disadvantages Some people especially the teenagers abandon (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,Homework,Recite Para one,other useful words and expressions about computer,Network 网络 Website 站点 Program 程序 Virus 病毒 Hacker 黑客 Download 下载 Software 软件 Hardware 硬件,Up load 上传 Home page 主页 Password 密码 Desk top 桌面 User name 用户名 Click 点击,有一些共同之处 have something in common 头脑简单的 Simple-minded 心不在焉的 absent-minded 意志坚强的 strong-minded In a way：to a certain extent 在某种程度上 In the way: 造成阻碍 After all 毕竟；终究；归根结底 Watch over : take care of 照料；照管。 Wander v. 游荡；闲逛。He was wandering aimlessly. Wonder v. 感到好奇n 奇观 I wonder who he is.,Learning about language,EX.1 1 totally 2 revolution 3 Artificial intelligence 4 birth 5 simple-minded 6 go by 7 deal with 8 network 9 truly 10 anyway,EX.2 revolution network went by totally truly simple-minded Anyway deal with,Discovering useful structures,As the years have gone by, I have been made smaller and smaller.,my family and I have been used by billions of people to deal with Information- I have truly been built to serve the human race-,现在完成时的被动语态（have/has + been+过去分词）,Someone has told me the sports meet might be put off. We have brought down the price. ,I have been told the sports meet might be put off.,The price has been brought down.,_,_,_,_,Great changes_ in the city, since the reform and opening to the outside world, and a lot of factories _. A have been taken place, have been set up B have taken place, have been set up C have taken place, have set up D were taken place, were set up,The road has been repaired.,道路已经修好了。,这本书已被译成英语。,This book has been translated into English.,1.This part of the seabed _ (explore) many times. 2.Much useful information about these planets _ _ (collect) since 1971. 3.Much parking space in cities _ (save) by using small cars.,has been saved,has been collected,has been explored,5.They say that some icebergs in the Far South _(pull) to Kuwait for drinking purposes in the future.,6.These questions _ (discuss) at the next meeting.,will be pulled,will be discussed,1 I know Mr. Brown; we_ to each other at an international conference. A are introduced B have been introduced C were introduced D had been introduced 2 Have you ever_ to the exhibition which _ for three weeks? A gone; has been shown B visited; shown C been; has been on show D went; lasted 3 The boy whom you lent the bike to _ by a car. A hit B be hit C having been hit D was hit 4 I want to buy that kind of cloth because I _ the cloth _ well. A have told; washed B have been told; washes C was told; washed D have been told; is washed,B,C,D,B,5 The mayor of Beijing says all construction work for the Beijing Olympics_ by 2006. A has been completed B has completed C will have been completed D will have completed 6 The bridge_ away by floods and the fields_ by water. A had been washed ; were covered B has been washing ; is covered C had been washed; had covered D has been washed; is covering 7 It has decided that well go on a study trip to London next summer. 8 How long has this book been bought?,C,A,It has been decided,How long ago was this book bought?,Using structures,It has been reported that children will be off free education. It has been reported that free education will be offered to children. It has been said that we will be offered the latest computer science course book. It has been planned that the latest computer science course book will be offered to us. I have been told by Peter that I will be lent his notebook computer for a week. I have been told by Peter that his notebook computer will be lent to me for a week.,Translation,1 This type/kinds of computer has been specially designed for teachers and students. 2 The needs of the teachers and students have been greatly considered. 3 With the help of computer, you may not find it hard to deal with and share information. 4 Besides, you can easily communicate with people all over the world by Internet. 5 This will cost a lot of money, but after all, it is worth buying a computer for every teacher. 6 She uses the computer so well that she doesnt often write with a pen and paper. 7 If a new situation arises, they will make up new programmes.,同学们,来学校和回家的路上要注意安全,同学们,来学校和回家的路上要注意安全,
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