高中英语 Unit3 Computers课件 新人教版必修2.ppt

unit3computerswhoami welcome thetechnologydevelopssoquicklythatmanynewthingsappearinhumanbeings life let sguesswhattheyare guessinggame iamveryoldnow iwasborninchina manypeopleusedmeforcalculatinginthepast butnowiamabitlonelybecausetheydon tlikemenow doyouknowwhoiam abacus guess iamverysmall icanbeusedforcalculating inchina alotofstudentsusemewhensolvingmathematicalproblems doyouknowwhoiam calculator icanbeusedforcalculating besides icanalsobeusedforwatchingdvd sendinge mailandcommunicatingthroughtheinternet however iamnotapc becausei msmallenoughforyoutotakemewithyou laptop computer doyouknowwhoiam abacus calculator hugecomputer bigger pc laptop pda smaller reading whoami learningobjectives1 知识目标 enrichyourknowledgeaboutcomputersandcomputertechnology 2 能力目标 enhanceyourreadingabilityandspeakingability3 情感目标 toarousestudents interestoncomputerandusecomputerscorrectly skimming 1 whoisthespeakofthetext 2 what sthetopicsentenceofeachparagraph 3 what sthemainideaofthetext 4 puttheinventionsintimeorder 1 whoisthespeakerofthetext acomputer 2 whatisthetopicsentenceofeachparagraph paragraph1 paragraph2 paragraph3 overtimeihavebeenchangedquitealot thesechangesonlybecomepossibleasmymemoryimproved sincethe1970smanynewapplicationshavebeenfoundforme 点拨技巧 topicsentence一般在段首或段末 3 what sthemainideaofthepassage thispassageismainlyaboutthehistoryandthedevelopmentofthecomputer 3 canyouputtheseinventionsinanorderaccordingtothetimewhentheyappeared calculatingmachine pc analyticalmachine laptop robot universalmachine 1 2 3 4 5 6 scanning task1finishthetimeline readingfordetails calculatingmachine simplify sums technologicalrevolution artificialintelligence solve size 1822 devoted humanrace computersgrewaslargeasaroom computerswereusedinofficesandhomes manynewapplicationshavebeenfoundforthem 1960s task2 answerthefollowingquestions 1 whyandhowdidcomputerchangeitsshape computerschangedbecausethememoryofitgotimproved firstitwasstoredintubes thenontransistorsandlateronverysmallchips 2 whataretheapplicationsofcomputers theyhavebeenusedincommunication financeandtrade theyhavebeenputintorobotsandusedtomakemobilephonesaswellashelpwithmedicaloperations theyhavebeenputintospacerocketsandsenttoexplorethemoonandmars 2 3 1 task3challengeyourself 1 inwhatorderwasthepassageorganized time 2 correctmistakesinthefollowingsentences 1 overtimeiwaschangedalot 2 astimegoingby iwasmadesmaller 3 anyhow mygoalisprovidehumanswithalifehighquality waschanged改为havebeenchanged going改为went 或as改为with provide前加上to high前面加of 3 translatethefollowingsentenceintochinese overtimemymemoryhasdevelopedsomuchthat likeanelephant ineverforgetanythingihavebeentold 随着时间的推移 我的记忆能力发展得如此之快 就像一头大象一样 我从来不会忘记告诉我的任何事情 groupdiscussion task1 supposingthat 假如 youweremr mrscomputerwhoknowsmuchaboutcomputersandonestudentwantstointerviewyoutoknowsomethingaboutcomputers nowmakeadialoguebetweenyouandthestudent youcanusethefollowingpattern student hello iamastudentofno 1middleschool mayiaskyousomequestions mr mrscomputer ok student whenandwheredidcomputersbegin mr mrscomputer student mr mrscomputer student whathappenedtocomputersinthe1960s mr mrscomputer student whatcancomputersbeusedtoday mr mrscomputer student whatcanweusethemtodointhefuture whenandwheredidyoubegin whatcanyoubeusedtoday whathappenedtoyouinthe1960s task2 advantagesvs disadvantages advantages searchforinformation chatwithfriends shoppingonline readnews sendemails downloadmusicandfilms otheruses lookatphotosonthecomputerreadbooksandmagazineswatchmoviesplaycomputergameslistentomusicsurfthewebforfunenrichourknowledgeabouttheworldmakenewfriendsusingonlinesourcetolearnenglish thesuicideoftheboybecauseofbeingaddictedtocomputergames disadvantages otherdisadvantages tooexpensivebeingaddictedtocomputerscanaffectyourstudysomeunhealthyinformationcanpolluteyoubeingaddictedtocomputerscanaffectyourphysicalandmentalhealthbeingcheatedbyothersonthecomputercommitacrimethroughcomputer 语法填空 thehistoryofcomputerbeganin1642infrance itwasfirstbuiltonlyasa calculate machine andlaterasananalyticalmachinethatcould think logic andproduceananswerquickerthananyperson stilllater the machine isbuilt solve mathematicalproblems madecomputerhuge timewentby computerhasbeenmadesmaller quickerandcleverer later computers calculating logically universa