课件类：人教版英语学科必修2第三单元READING.ppt

Unit3ComputersReading,高一年级：沈璐,Abacus,calculator,ItwasborninChina.Manypeopleuseditforcalculatinginthepast,Itisverysmall.Itcanbeusedforcalculating.InChina,manystudentsuseitwhensolvingmathematicalproblems.,Pre-reading:,Whatdotheyhaveincommon?,IthinkBothofthemcancalculatesomethingandcandealwithsomemathproblems.Ibelievethattheyareourgoodfriendinourdailylife.,Doyouknowanyotherthingswhichcanbeusedtocalculate?,Pre-reading,Doyouhaveacomputer?Canyounamesomepartsofthecomputer?,Monitor（显示器）,Keyboard(键盘),Mouse（鼠标）,CD/DVDROM（光驱）,floppydisc（软盘）,Pre-reading,1,2,3,4,5,CPU（中央处理器）,Harddisc（硬盘）,Mainboard(主板),Somehardware:,Memorybar（内存条）,Pre-reading,Doyouknowinwhatwayscomputersareusedtoday?,Computers,Playcomputergames,sende-mails,listentomusic,seemovies,chat,searchforinformation,doshopping,learncomputerskills,Pre-reading,Computershavegreatpower.Theymakeourlivesmorecolorfulandmoreconvenient.,Weshouldlearnmorecomputerskillswhichareveryusefulinourfuturework,BUT,Dontjustusecomputersforfun.,Dontspendtoomuchtimeinplayingcomputergamesorchatting(聊天)online.,Pre-reading,WhoamI?,Reading,Itisacomputer,Skimming:Gooverthestoryandfindoutwhatthemainideaofthistextis.,Thispassageisabout:,thedevelopmentofcomputers.,Reading,Readthetextfastandfindoutthetopicsentenceofeachparagraph.,SummaryAtopicsentencesetsoutthemainideaofaparagraph.Atopicsentenceisusuallythefirstorthelastsentenceofaparagraph.,Fastreading,Paragraph3,Paragraph2,Paragraph1,OvertimeIhavebeenchangedquitealot.,Thesechangesonlybecamepossibleasmymemoryimproved.,Sincethe1970smanynewapplicationshavebeenfoundforme.,Topicsentences,Fastreading,FurtherReading,1,2,Whowasthenextimportantperson,todesigncomputers?,Whobuiltthefirstanalyticalmachine?,CharlesBabbage,AlanTuring,Thecomputerbeganasacalculatingmachine,Thecomputergrewrapidlybothinsizeandinbrainpower.,Readandfinishthetimelinebelow.,FurtherReading,Thecomputershadgrownaslargeasaroom.,1960s,Computerswereusedinofficesandhomes.,Computersconnectpeopleallovertheworldtogether.,Furtherreading,Calculatingmachine,Analyticalmachine,Universalmachine,Artificialintelligence,network,Internet,Howdidcomputersdevelop?,(In1642),(In1822),(in1936),(Inthe1960s),(Inthe1970s),Furtherreading,In1642Ibeganasacalculatingmachineandcouldsolveanymathematicalproblem.2.MyrealfatherwasCharlesBabbage,whowroteabookandbuildmein1936.,F,F,AlanTuring,TrueorFalse?,3.AfterIgotmynewtransistorsinthe1960s,Ibecamesmallerbutclevererandquicker.4.Iwasbroughtintopeopleshomesinthe1970s.5.SincemybirthIhavebeenbuilttotaketheplaceofhumanrace.,T,T,F,serve,TrueorFalse?,6.AlanTuringbuiltanAnalyticalMachinetosolveanymathematicalproblems.7.Peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing.8.Thecomputerbegantoservethehumanracesinceitwasbroughtintopeopleshomes.,F,T,F,TrueorFalse?,9.Sincethe1970s,thecomputerwasusedbypeoplearoundtheworldthroughtheInternet.10.Thelargerthecomputeris,themorememoryithas.,T,F,TrueorFalse?,Summary,I,thec_,wasacalculatingmachinein1642inF_.In1936,Ibecamea“u_machine”tos_anymathematicalproblem.Sincethe1970sIhavebeenusedfirstasaP_andthenasal_inofficeandh_.,omputer,rance,niversal,olve,C,aptop,omes,Manychangeshavehappenedtomys_,somys_totallychanged.Ihavebeenwidelyusedinmanyfields,Ihavealsobeenputintorobotstoe_theMoonandMars.,ize,hape,xpl