unit3-computers-words-(单词两课时)-ZF.pptVIP

Discussion: 1.How does the computers look like in 60 years ago? 2.Did every family have a computer in 60 years ago? Why? What happened to computers during many years? The computer is becoming smaller and smaller. huge adj. tiny adj. =very small 巨大的 470，000 dollars expensive adj.昂贵的=dear 1,000 dollars The price is becoming lower and lower. What‘s the price of the computer? 价格、代价=How much is the computer? 反义词 cheap monitor 显示器 main unit 主机 keyboard 键盘 mouse 鼠标 老鼠(复数mice) speaker 扬声器 How many parts does a computer have? Catch me if you can: 1.The _______showers words and pictures. 2.We use the __________for typing. 3.The brain of a computer is in the__________. 4.We move the________to control the computer. 5.We hear sound from the________. 6.He can_______80words in one minute. 7.Take it easy. Everything is______________. monitor keyboard main unit mouse speakers type under control What can we do with computers? We can type with computers. V.打字 What can we do with computers? We can culculate [k?lkj?le?t] V. 计算- n. calculation =work out the answer n. calculator at a high speed. 高速地 每秒100万亿次 What can we do with computers? We can use the computer to operate railways. 我们可以通过电脑来操控铁路系统。 operate v.操作；控制 railway n.铁路系统 We use computers at home at school in a company. 公司 Where do we use computers? -companies order n. The company got a large order for iphones. --Should the man order this lady? --No, it’s impolite. 订货；订购 order v. 命令 compare v. If you compare this computer with that one, this one is much smaller than that one. 比较；对比 Chairman Mao compared the young people to the rising sun. depend v.依靠；依赖 We depend on our parents now, but we should be independent in the future. depend on 依靠 independent adj. 独立的；自主的 --Shall we go camping tomorrow? --It depends．　视情况而定。 sell v.出售；售卖 sell--sold--sold sale n. 卖；销售 on sale 大甩卖；廉价出售 sold out 售罄，卖完 I want to sell my house. I boug