高中英语 Unit3 Task课件 新人教版必修2.ppt

unit3computers guess atoy ahandbag computers iamveryoldnow iwasborninchina manypeopleusedmeforcalculatinginthepast butnowiamabitlonelybecausetheydon tlikemenow doyouknowwhoiam abacus guessmore iamverysmall icanbeusedforcalculating inchina alotofstudentsusemewhensolvingmathematicalproblems doyouknowwhoiam calculator icanbeusedforcalculating besides icanalsobeusedforwatchingdvd sendinge mailandcommunicatingthroughtheinternet however iamnotapc becausei msmallenoughforyoutotakemewithyou notebookcomputer doyouknowwhoiam ahugecomputer apc thehistoryofthecomputer palmtop whoami skimming gooverthestorytofindoutwhothespeakeris writedown3sentencestosupportyouridea iwasabletosharemyknowledgewithothersthroughtheworldwideweb myrealfatherwasalanturing iwasbuiltasananalyticalmachinebycharlesbabbage timeline thecomputerbeganasacalculatingmachine 1822 alanturingwroteabooktodescribehowcomputerscouldbemadetowork computershadgrownaslargeasaroom 1960s computerswereusedinofficesandhomes computersconnectpeopleallovertheworldtogether scanning inwhichorderisthetextorganized trueorfalse alanturingbuiltananalyticalmachinetosolveanymathematicalproblems peoplebegantorealizethatthecomputergotclevererandquickerwithtimepassing thecomputerbegantoservethehumanracesinceitwasbroughtintopeople shomes sincethe1970s thecomputerwasusedbypeoplearoundtheworldthroughtheinternet 5 thelargerthecomputeris themorememoryithas f t f t f 1 choosethebestanswers1 what sthemainideaofthetext a thecomputerwantstofind whoheis b thefunctionalchangeofthecomputer c thecomputerbecomespopulararoundtheworld d thehistoryofthecomputer comprehending 2 whatcanyouinferfromthetext a thecomputerhasartificialintelligence b thecomputerchangesalotovertheyears c thecomputerwasnotconnectedbyanetworkuntilintheearly1960s d nowthecomputercanonlybeusedtodealwithinformation q1 howdidthecomputerworkasananalyticalmachine thecomputerfollowedinstructionsfromcardswithholes 2 questions q2 inhowmanywaysdowesaythecomputerchanged whatarethey size intelligence speed function people opinion smaller quicker cleverer calculating dealingwith communicatingwith clever useful 1960s consolidation retelling 1amonitoris2thescreenis3akeyboardis4amouseis5acd romis6aharddiskis a thepartofacomputerthatstoresinformation b thepartofthecomputerthatyoutypeon c thepartofthecomputerthatlookslikeatelevision d somethingyouusetoclickonthings files etc e thepartofthemonitorthatyoulookat f aseparatediskthatcontainslotsofinformation matchthewordswiththeirmeanings internet 1 whatcanthecomputerbeusedfor task2 discussion schoolworkgamesemailsmusicandfilmschatinformationphotosshopping ourlifehaschanged palmtop smallerdesktop convenientlaptop whataretoday ssmallercomputerslike 2 whataboutinthefuture virtualkeyboards虚拟键盘 nose topkeyboard vest robot whataboutinthefuture supposeyouareareporter nowyouareinterviewingmr misscomputer samplequestions whatdoyouliketoeat whatareyourhobbies whatis