人教版高中英语必修二第三单元

1、Unit 3 Computerskeyboardmousemonitorscreenspeaker host computer Write out all the words you know about putermonitorclicksoftwaresearchupdatedownloadInternetkeyboard下载下载网络网络软件软件键盘键盘主板主板点击点击查询查询历史历史电脑电脑other useful words and expressions about computerNetwork 网络Website站点Program程序Virus病毒Hacker 黑客Downloa

2、d 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Look at the following pictures and say their English names.I. Warming upAn abacusA calculator Warming uphuge computerPC Warming uplaptopPDA robotWhats next? Discuss with your partner the following questions. Wh

3、at do these pictures have in common? What do they tell you about the development of computers? What do you think will be the next development? Warming up(What do they have in common?) I think that In my opinion I believe that Whats your reason? Why do you think so?1.They can be used for calculating.

4、 2.They can deal with maths problems.3.They are our friends.4.They are useful and helpful.Discussion Work in pairs. Try to put these inventions in an order according to the time when they appeared. Then read the passage quickly and check to see if you were right. ( ) analytical machine ( ) laptop (

5、) calculating machine ( ) robot ( ) PC ( ) universal machine II. Pre-reading251643The development of computers:1.Calculating machine2.Analytical machine3.Universal machine4Artificial intelligence5.Computer6.Internetcalculateuniversalsimplifysumoperatorvt. 计算计算adj. 普遍的；宇宙的普遍的；宇宙的vt. 简化简化n. 总数；算术题；金额总

6、数；算术题；金额n.（电脑）操作员；（电脑）操作员； 接线员接线员Words previewlogicallogicallytechnologytechnologicalrevolutionadj. 合逻辑的；合情理的合逻辑的；合情理的adv. 逻辑上；合逻辑地；逻辑上；合逻辑地； 有条理地有条理地n. 工艺；科技；技术工艺；科技；技术adj. 科技的科技的n. 革命革命Words previewartificialintelligenceintelligentsolverealitypersonaladj. 人造的；假的人造的；假的n. 智力；聪明；智能智力；聪明；智能adj. 智能的；聪明

7、的智能的；聪明的vt. 解决；解答解决；解答n. 真实；事实；现实真实；事实；现实adj. 私人的；个人的；私人的；个人的； 亲自的亲自的Words previewpersonallytubetotaltotallynetworkadv. 就个人而言；亲自就个人而言；亲自n. 管；管子；电子管管；管子；电子管adj. 总的；整个的总的；整个的n. 总数；合计总数；合计adv. 完全地；整个地完全地；整个地n. 网络；网状物网络；网状物Words previewwebapplicationfinancemobilerocketn. 网网n. 应用；用途；申请应用；用途；申请n. 金融；财经金融；

8、财经n. 可移动的；机动的可移动的；机动的n.火箭火箭Words previewexploreanyhow (anyway)happinesshuman racevt. & vi. 探索；探测；探究探索；探测；探究adv. 无论如何；即使如此；无论如何；即使如此； 至少至少n. 幸福；快乐幸福；快乐人类人类Words preview根据构词法猜测词义根据构词法猜测词义 The meaning of the words in group A can all be guessed from their formation. Each pair of words has the same r

9、oot（词根）（词根）.technology technologicalsimplesimplifypersonpersonalrealrealityhappyhappinessWhile-reading1.Fast reading(Read the passage quickly and check your prediction.What is the main idea of the passage?)This passage is about _.III. While-readingthe development of computers根据上下文猜测词义根据上下文猜测词义 The m

10、eaning of the words in group B can all be guessed from context. Example:revolution: From the previous sentence we know that after the work of the operator, “I could think logically and produce an answer quicker than any person”, which indicates a great improvement, so “revolution” here may mean “a c

11、omplete change”. While-readingUseful phrasescalculating machineAnalytical machinecard with holestechnological revolutionuniversal machineartificial intelligencego byby internethuman race计算器计算器分析机分析机穿孔卡穿孔卡技术革命技术革命万能机万能机,通用机器通用机器人工智能人工智能走过，过去走过，过去通过网络通过网络人类人类2. Read the passage again. Find the topic s

12、entence of each paragraph and the supporting details. Paragraph 1: Over time I have been changed quite a lot. 1. calculating machine2. analytical machine3. universal machine4. laptopWhile-reading Paragraph 2: These changes only became possible as my memory improved. 1. tubes 2. transistors 3. chips

13、4. network 5. World Wide WebWhile-readingParagraph 3: Since the 1970s many new applications have been found for me. 1. communications 2. finance 3. trade 4. robots 5. mobile phones 6. medical operations 7. space rockets 8. providing a life of high qualityWhile-readingSummary A topic sentence sets ou

14、t the main idea of a paragraph. A topic sentence is usually the first or last sentence of a paragraph.While-readingcalculatinganalytical universal mathematical problemsMedical operations MemoryTransistorsApplicationsCommunicationTradeTask Listening I began as a _ machine in 1642 in France. In 1822 I

15、 was built as an _ machine. Then in 1936 Alan Turing wrote a book and built a _ machine. As the years have_ _ , I have been made _ . There were times when my size _ changed. And my memory became _ large _ I couldnt believe it. In the 1960s they gave me a family_ by a network. I was able to _with oth

16、ers through the World Wide Web. Since the 1970s many new applications _ for me.calculatingAnalyticaluniversalgone bysmaller totallythatconnectedhave been foundshare my knowledgeso Listen to the tape and fill in the blanksWhat can you use computers to do?Computer and Internet type my homeworkdraw pic

17、turesplay gamescommunicate with my friends.gather information for my lessonslisten to musicwatch moviesHow do you use computers and the Internet?YesNoI often use a computer to, I sometimes use it to, and I never use it toDiscussion Something to think about: With the development of computer technolog

18、y, the internet had become more and more popular among students. However, just as a saying goes,a coin has two sides. The internet brings both advantages and disadvantages to students. Work with your partners to list some advantages and disadvantages of the internet. Advantages: Disadvantages:Summary: what have we learned?1.some