高中英语 Unit 3 ComputersSectionⅠ同步教学课件 新人教版必修2.ppt

section warmingup reading preparing 预习多维感知 section 预习多维感知 stepone askanddiscussionlookatthefollowingpicturesandthencompletethedialogue 1 what sthis it san itisanoldcalculatingmachineusedinchinauntilnow 答案 abacus 2 what sthis it sa itisanewcalculatingmachinewhichcansolvealargenumberofmathematicalproblems 答案 calculator 3 what sthis it sa itisapersonalcomputerwhichcansolveallkindsofproblemsandiswidelyusednow 答案 pc 4 what sthis it sa itisakindofusefulcomputerwhichcanbetakenconvenientlylikeanotebook 答案 laptop steptwo fastreadingscanthetextandthenchoosethebestansweraccordingtothetext 1 whoam i accordingtothetext a anoperator b arobot c acomputer d aninventor 答案 c 2 whyisalanturingcalledtherealfatherofthecomputer a heinventedthecomputer b hemadethecomputersmaller c hemadethecomputerwidelyused d hewroteabookaboutthecomputer 答案 d 3 whydidthecomputercompletelychangeitsshape a becauseitcoulddomanythings b becauseitsmemorygreatlyimproved c becauseitcouldsimplifysums d becauseitneverforgotthings 答案 b 4 whenwerethecomputersconnectedtooneanother a inearly1960s b inthe1970s c inthe1940s d intheyearof1936 答案 a 5 whatcanwelearnfromthetext a thecomputerwilltaketheplaceofhumanbeings b thecomputerwillbesmarterthanhumanbeings c thecomputerwillbeadisasterforhumanbeings d thecomputerwillbeusedinmanyfieldsinlife 答案 d stepthree carefulreading readthetextandthenanswerthefollowingquestions 1 whowastherealfather 答案 alanturing 2 whathashappenedto i sincethe1970s 答案 ihavebeenusedinofficesandhomes andmanyapplicationshavebeenfoundforme 3 what sthemainideaofthetext 答案 thisisashorthistoryofthedevelopmentofcomputers pleasefindoutthetopicsentenceofeachparagraph para 1 para 2 para 3 答案 para 1 overtimeihavebeenchangedquitealot para 2 thesechangesonlybecamepossibleasmymemoryimproved para 3 sincethe1970smanynewapplicationshavebeenfoundforme stepfour summaryibeganasa1 machinein1642 ittooknearlytwohundredyears2 iwasbuiltasananalyticalmachine ibecamea universalmachine in1936to3 anymathematicalproblem iwasverybigatonetime however astime4 iwasmadesmallerandsmaller iwasgivenafamily5 byanetworkintheearly1960s iwasableto6 myknowledgewithothers7 theworldwideweb ihavebeenwidelyusedinmanyfields suchasincommunication 8 tradeandmedical9 ihavealsobeenputintorobotsandspacerocketsto10 themoonandmars i mgladiamadevotedfriendandhelperofthehumanrace 答案 1 calculating2 before3 solve4 wentby5 connected6 share7 through8 finance9 operations10 explore stepfive discussionwiththedevelopmentofcomputertechnology theinternethadbecomemoreandmorepopularamongstudents however justasasayinggoes acoinhastwosides theinternetbringsbothadvantagesanddisadvantagestostudents discusswithyourpartnerstolistsomeadvantagesanddisadvantagesoftheinternet advantages disadvantages 答案 advantages 1 communicatewithfriends allovertheworld 2 listentothemusic 3 seefilms watchnews 4 playgames 5 doshopping 6 savealotoftime 7 doalotofusefulthingsdisadvantages 1 so