新人教必修二Unit3Computers-WarmingupandPre-readingppt课件.pptxVIP

Unit 3 Computers Period 1 Warming up The whole class will be divided into four groups ,and each group send a student to stand before the platform , who guess what the object is and the rest of the group mates can only do some movements to let his or her group representative guess what the object is and the group mates who guess the object must use the following expressions: Riddles(谜语): I am a machine which is a good helper in doing house work. I wash clothes for people. Who am I ? washing machine Riddles(谜语): • A machine that you use to talk to other people even in a far-away place. • We are connected by wire or radio. •Now each of us often has a number. telephone Who am I ? Riddles(谜语): With this you can watch different programmers just at home. I’m a machine that has a screen with moving pictures and sounds. But watching me too much is bad for your eyes. Who am I ? TV set Riddles(谜语): I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they don’t like me now. Who abacus am I ? Discussion Is it very important to learn computer skills for us? Why or why not? Use the following expression in your discussion. I think that …… In my opinion … I believe that … What’s your reason? Why do you think so? Components of a computer Floppy Disk Speaker Scanner Monitor Mouse about a computer??? Give the English name of the following pictures of the computer components (组件) How much do you know What is it in English?? Main board(主板) CPU (central processing Unit) 中央处理器 What is it in English?? What is it in English?? RAM (随机存储器) (Random Access Memory ) What is it in English?? hard disc 硬盘 What is it in English?? Keyboard (键盘) What is it in English?? Power (电源) supply CRT display (Cathode Ray Tube 阴极射线管) 纯平显示器 What is it in English?? What is it in English?? mouse 鼠标 What is it in English