八年級英語上：Unit 3 Modern machines課件上海牛津版

What is this?Computer Do you have one?laptopLETS LEARN ABOUT ITmonitormouse speakers drives keyboardCD-ROMDVD-ROM flash diskMORE ABOUT COMPUTERS. 第一部真正可以稱得上計算機的機器，則誕生于第一部真正可以稱得上計算機的機器，則誕生于1946年年的的美美國國，毛琪利毛琪利與與愛克特愛克特發(fā)明的，名字叫做發(fā)明的，名字叫做ENIAC。這部計算機。這部計算機使用真空管來處理訊號，所以體積龐大（使用真空管來處理訊號，所以體積龐大（占滿一個房間占滿一個房間）、）、耗電量高（使用時全鎮(zhèn)的人都知道，因為家家戶戶的電燈都耗電量高（使用時全鎮(zhèn)的人都知道，因為家家戶戶的電燈都變暗了！），而且記憶容量又非常低（變暗了?。?，而且記憶容量又非常低（只有只有100多個字多個字），），但是，卻已經(jīng)是人類科技的一大進展。而我們通常把這種使但是，卻已經(jīng)是人類科技的一大進展。而我們通常把這種使用真空管的計算機稱為第一代計算機。用真空管的計算機稱為第一代計算機。 GROUP WORKComputers are useful today, we can use them to do a lot of things. Please discuss with your partners “What can we use computer to do?” “What would you use computer to do?” “How long will you serve the Internet?”1. Not so many years ago, you hardly ever saw computers.always often hardly ever never100% 0% seldom2. There are also many tiny, hidden computers in your home. small3. But you might be unaware of computers. be unaware of : do not know about be aware of : know about4. You are more dependent on computers than you realize.You are dependent on your parents now. be dependent on : 依賴于5. They can also type, print and draw. printer n. 打印機print v. 打印6. They can operate railways (like the underground). operate : control v. 操作, 使運行7. The answer to this question is, for the time being, “No”. for the time being : at present 暫時8. In the future, they may even be better at doing their jobs than doctors, judges and teachers She is a judge.n. 法官,審判員9. This raises interesting questions. raise : lift up (v.) 舉起、提出他提出了其他的問題.He raises other questions.The reporter raised her hand and she wanted to question.那位記者舉了手，她想提問題. Matching & Learn them by heart. CD Rom keyboard drives mouse flash disk monitor speakers 鼠標 鍵盤 喇叭 顯示器 只讀光盤 閃存盤/ U盤. 驅(qū)動器 hide dependent on hardly ever tiny be unaware of realize 難得 極小的 不知道 意識 隱藏 依賴于 rarely operate railway print importantly spaceship eletronic brains 印刷 宇宙飛船非常少 軌道操作 電腦核心 重要地READ THE TEXT QUICKLY AND FINISH THE EXERCISE ON P46 C FIND THE MEANINGC1. BCBABAC2. DEACBskimming PracticeFill in the blanks with the proper words in the box probably, realize, hide, tiny, raise, control, judge, model, 1.Many people dont _ trees are so important to us.2. I saw many students _ their hands.realizeraising3. Computers maybe do better than _ in the court.4. He cant _ himself to smoke after a few hours.5. Hong Kong is a _ city.6. Computers _ change our daily life in many ways soon.