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1、Unit 3 Computerswelcome to my class -崔佳高一英语组 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 dont like me now. abacusRiddles(谜语): Do you know who I am? I am very small. I can be used for calculating. In China, a lot of s
2、tudents use me when solvingmathematical problems. Do you know who I am?calculatorRiddles(谜语): I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mail and communicating through the Internet. However, I am not a PC, because Im small enough for you to take me with yo
3、u.notebook computer/laptopDo you know who I am?Riddles(谜语): What do they have in common?An abacusA calculatorA notebook computercalculateReading: Who am I? 1. Who am “I”in the story?2. Who was my real father? 3.What is the main idea of the passage?The passage is about the _ of computers. 1642 193619
4、40s The first family of computers was connected by a network.1970s nowTimeline200yearslaterScanning: 1. Who am “I”in the story?A computer.2. Who was my real father? 3.What is the main idea of the passage?The passage is about the _ of computers.developmentAlanTuring 1642 19361940s The first family of
5、 computers was connected by a network.1970s nowTimelineThe computer began as a calculating machine200yearslaterAlan Turing wrote a book about how computers could be made to work as a “universal machine”The computer had grown as large as a room1960sComputers have been used in offices and homesMany ne
6、w applications have been found for the computer. Computers connect people all over the world together.Scanning:The computer was built as Analytical Machine by Charles Babbage. Careful Reading: find the topic sentence of each paragraph and their supporting details. Paragraph 1Topic sentence:Supportin
7、g detailsUseful phrases (Para1)calculating machineAnalytical machinecard with holestechnological revolutionuniversal machineartificial intelligencego byby internet计算器分析机穿孔卡技术革命人工智能通用机器经过,(时间)流失通过网络over time be considered (as/to be )as large as As time went by随着时间的推移=as time goes by =with time going
8、by被认为是.和.一样大随着时间的推移Paragraph 1Topic sentence:Supporting detailsOver time I have been changed quite a lot.calclating machineanalytical machineuniversal machinePClaptopThe computer has become smaller and smaller. 1.memory 2.store3.share sth with sb 4.World Wide Web(WWW）the phrases and words(para 2)储存与
9、某人分享某事万维网内存/记忆力Paragraph 2Topic sentence:Supporting detailsThese changes only became possible as my memory improved.tubestransistorschipsnetworkWorld Wide Web 1.medical operations 2.provide sb with sth3.of high quality 4.be filled with 5.devoted friendUndeline the phrases and words(para .3)医疗手术给某人提供
10、某物=provide sth for sb高质量装/填满.=be full of忠实的朋友Paragraph 3Topic sentence:Supporting detailsSince the 1970s many new applications have been found for municationsfinance and traderobotsmobile phonesmedical operationsSummary The development of computers:Calculating machineAnalytical machineUniversal mach
11、inePCLaptopTrue or False1.Alan Turing built an Analytical Machine to solve any mathematical problems.2.People began to realize that the computer got cleverer and quicker with time passing.3.The computer began to serve the human race since it was brought into peoples homes.4.Since the 1970s, the comp
12、uter was used by people around the world through the Internet.5. The larger the computer is, the more memory it has.FTFTFa universal machineits birthI became small and thin but I got cleverer and cleverer, quicker and quicker. And my memory became so large that I couldnt believe it!Careful readingSu
13、mmary of the development of computers I was born as a _ _ in 1642 in France. In 1822 I was built as an _ _. Then in 1936 my real father_ _wrote a book and built a _ _.As time _ _, I have been made_ _ _ but my functions have become _ _ _. In the 1960s they gave me a family_ _ _ _. Now people call it
14、the Internet. I was brought into _ _ _in the 1970s.So I became PC. Since my birth I have truly been built to serve the human race.calculating machineAnalytical machineuniversal machinewent bysmaller and smallerbetter and better connected by a networkoffices and homesAlan TuringPlay computer gamesWha
15、t can computers be used to do in daily life? Group discussion search for information watch movies/see filmslisten to musicread books and magazinesdo shopping onlineplay games on the computerwatch newscommunicate with friendssend e-mailschat with friends through QQPlay computer gamesDo shoppingListen
16、 to music. Send e-mailsSearch information See moviesLearn computer skills Chatadvantages of computers watch news read books and magzinesWe can use the compuers todisadvantages of computers talk with your classmates about the disadvantages after class.Homework:1.Write a short passage of the advantages and disadvantages of computers 2. Retell the passage after class .英语老师让我们组织了一场为”中学生是否可以上网(Should high school students surf the internet?)”的讨论.请根据讨论结果写一篇短文.Para 1 We held a heated discussion about (论
