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单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Unit3 Computers,reading,abacus,calculator,huge computer,PC=,personal computer,laptop,PDA,掌上电脑,=personal digital,assistant,What are they?,【,bks,】,【,klkjuleit,】,【,lp,tp,】,1,2,4,3,5,6,1.monitor 2.screen 3.CD-ROM,4.mouse 5.keyboard 6.hard disk,Label each part,What do you use computers for?,type your homework,draw pictures,play games,download,gather information,listen to music,watch movies,emails,chat with ,How useful computers are!,Step,Scanning,Read the passage quickly and find out the topic sentence of each paragraph.,Usually,the first,or,the last,sentence of a paragraph can be the topic sentence.The topic sentence can help us know the,main idea,of a paragraph.,Reading tip,Para 1:,Para 2:,Para 3:,Over time I have been changed quite a lot.,These changes only became possible as my memory improved.,Since the 1970s many new applications(,用途,)have been found,for me.,What,s the main idea of the text?,A.The computer wants to find,“,who he is,”,.,B.The functional change of the computer.,C.The computer becomes popular around,the world.,D.A short history of the development of the computer.,1642,_was made by Charles Babbage.,1936,1940s,The first _of computers was connected to each other.,1970s,now,Timeline,The computer _ as a calculating machine in France,1822,_wrote a book to describe how computers could be made to work as a universal machine,Computers had grown_,Computers were used in _,Step,:,Skimming,1960s,computers,connect people _,together.,began,The Analytical Machine,as large as a room.,offices and homes,all over the world,Alan Turing,family,In what order(,顺序,)did the writer organize the text?,space,time,C.cause and result,D.inverted order(,倒序,),Step Detailed Reading(,细读,),Read each paragraph carefully and find out more information.,History of the computer,Name,Function(,作用),(1)A _ machine,Simplify difficult sums,(2)An _ machine,Think logically and produce an answer quickly,(3)A _ machine,Solve difficult mathematical problems,(4)_,Personal use,Laptop,Can be carried conveniently,1.Read,Paragraph One,carefully and fill in the form.,calculating,analytical,universal,PC,2.Read,Paragraph Two,carefully and finish the following two tasks.,These changes only became possible as my memory improved.,Task2,Translation,Over time my memory has developed,so,much,that,like an elephant,I never forget anything I have been told!,Task1,Fill in the blanks,What made my memory improved?(List at least 3 ways),._._(3)._,For example:tubes,Task1 Fill in the blanks,What made my memory improved?,(List at least 3 ways),._,._ ._,(4)_,transistors,chips,network,tubes,so+adj./adv.+that,如此,以致于,1).The weather was _ cold that I didnt like to leave my room.,A.really B.such C.too,D.so,2).I havent seen Ann for _ long that Ive forgotten what she looks like.,A.such B.very,C.so,D.too,Task2,Translation,Over time my memory has developed,so,much,that,like an elephant,I never forget anything I have been told!,随着时间的推移,我的记忆能力发展的如此之快就像一头大象一样,从来不会忘记告诉我的任何事情,.,3.,Read,Paragraph Three,carefully and,find,new applications,of the computer.,applications,communication,finance,trade,robots&mobile phone,Medical operations,Space rocket/explore the Moon and Mars,My goal is to provide humans with a life of high quality.,Since the 1970s many new applications have been found for me.,Summary,Who am I?,changes,reasons,applications,universal machine,calculating machine,analytical machine,PC,laptop,tubes,transistors,chips,network,world wide web,communications,finance,trade,robots,mobile phones,medical operations,development,Computers,Memory,improvement,Life of,high quality,Something to think about:,With the development of,computer technology,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:,Discussion,should high school students surf the Internet(上网)?,I think high school students should,surf the internet because(,For one thing,,,for another),I think high school students should,not surf the internet because(first,secondly,thirdly,Last but not the least),Should high school students surf the Internet(上网)?,Advantages,Communicate with,friends(all,over the world),listen to the music,see films&watch news,play games,,,do shopping,save a lot of time,do a lot of useful things,is good/beneficial to the young,Disadvantages,Abandon,(,沉迷于,)themselves,to,the computer games and chatting on the Internet,have little time to study,had bad effect on study,Some bad and unhealthy information,is harmful to the young,Conclusion,There is no doubt that computer has,two sides,too.If we make good use,of it,it will make our lives more colorful,and convenient.But dont lose yourself,in playing computers.Just remember:,Keep fit,study well and work hard.,Homework,Based on what we have discussed above,you choose one point of view(,观点,)that high school students should or should not surf the Internet and give your reasons.Write an article about 80 words.,Tips,:be in favor of,赞同,支持,be against,反对,In my opinion,high school students should(not).,In a word,we are strongly against/for,Homework,Based on what we have discussed above,you choose one point of view(,观点,)that high school students should or should not surf the Internet and give your reasons.Write an article about 80 words.,Tips,:be in favor of,赞同,支持,be against,反对,In my opinion,high school students should(not).,In a word,we are strongly against/for,
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