教学课件必修2Unit3.docx
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教学课件必修2Unit3.docx
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教学课件必修2Unit3
教学课件:
必修2—Unit3
1必修2-Unit3Page18LanguagePoints:
(Translation)1.havesth.incommonwith:
和有相同之处beincommonwith:
和有相同之处2.comparewith:
与相比较3.acalculatingmachine:
计算器4.Ittooknearlytwohundredyears(todosth.):
花费时间做某事5.bebuiltasananalyticalmachine:
被制作(组装)为一台分析机6.cardswithholes:
有孔的卡片7.atechnologicalrevolution:
技术革命8.fromthenon:
从那时起overtime:
随着时间的过去,经过一段时间,一直以来/astimegoby随着时间的推移9.asaresult:
因此,作为结果asaresultof:
因为,作为的结果10.sothat:
(1)以至于(结果状语从句);
(2)为了(目的状语从句)somuchthat(结果状语从句)solargethat(结果状语从句)
(1)sothat:
以至于(结果状语从句)
(2)inorderthat/inordertodo/soasto:
为了(目的状语从句目的状语从句)11.sharesth.withsb.:
和共享sharein:
分享,分担12.providesb.withsth.:
提供给某人什么东西13.befilledwith/fillwithsth.:
充满fillin:
填写;填充14.thehumanrace:
人类/ahumanbeing:
一个人必修2-Unit3Page19Comprehending:
1.Readthepassageandfinishthetimelinebelow.
(1)1642:
Thecomputerbeganasacalculatingmachine
(2)1822:
TheanalyticalmachinewasmadebyCharlesBabbage(3)1936:
Thecomputergrewrapidlybothinsizeandinbrainpower(4)1940s:
Thecomputerhadgrownaslargeasaroom(5)1960s:
Thefirstfamilyofcomputerswasconnectedtoeachother(6)1970s:
Computerswereusedinofficesandhomes(7)Now:
Computersconnectpeopleallovertheworldtogether2.Readthepassageagainandcompletethechartbelow.Paragraph1Paragraph2Paragraph3TopicOvertimeIhavebeenThesechangesonlySincethe1970smanynew2sentencechangedquitealotbecomepossibleasmymemoryimprovedapplicationshavebeenfoundformeSupportingdetails1.calculatingmachine2.analyticalmachine3.universalmachine4.PC5.laptop1.tubes2.transistors3.chips4.network5.WorldWideWeb1.communications2.finance3.trade4.robots5.mobilephones6.medicaloperations7.spacerockets8.providingalifeofhighquality必修2-Unit3Page20Discoveringusefulwordsandexpressions:
1.Findthewordorexpressionforeachofthefollowingmeaningfromthetext.
(1)revolution:
completechangeinwaysofthinking,working,etc
(2)network:
connectedcomputersystem(3)simplify:
tomakethingseasier(4)calculate:
tofindtheanswerusingnumbers(5)mobile:
abletobemovedeasilyfromplacetoplace(6)solve:
toworkouttheanswertoaproblem(7)explore:
totravelaroundanareatofindoutaboutit(8)totally:
completely(9)anyhow:
anyway(10)finance:
activityofmanagingmoney2.Completethepassagewiththewordsbelow.artificial,technology,intelligent,applications,explore,Web,reality,logicallyWhenmybrotherwasinhighschool,hewasveryinterestedincomputersandenjoyedwritingprogramsofhisown.HeusedtodownloadinformationfromtheInternetandmadegooduseofit.HelikedtoexploretheWorldWideWebandusedtheInternettocommunicatewithcomputerprogrammersallovertheworld.WhenhewenttouniversityhestudiedIT(informationtechnology)anddevelopedaspecialinterestinartificialintelligence.Afterdevelopingspecialapplicationsofthecomputer,hehopestodesignanintelligentrobotwhichcanthinklogicallyandlooklikeahumanbeing,butinrealityhehasalongwaytogo.3.Readthestorybelowandthenusetheoutlinetocreateoneofyourown.3(Translation)必修2-Unit3Page21Discoveringusefulstructures:
1.Lookatthefollowingsentence,payingattentiontotheunderlinedpart.EXAMPLE:
OvertimeIhavebeenchangedalot.Canyoupickoutmorethantwosentencesinthepresentperfectpassivevoicefromthereadingpassage?
(1)FirstasaPC(personalcomputer)andthenasalaptop,Ihavebeenusedinofficesandhomessince1970s.
(2)Overtimemymemoryhaddevelopedsomuchthat,likeanelephant,IneverforgetanythingIhavebeentold.(3)Sincethe1970s,manynewapplicationshavebeenfoundforme.(4)Ihavealsobeenputintorobotsandusedtomakemobilephonesaswellashelpwithmedicaloperations.(5)IhaveevenbeenputintospacerocketsandsenttoexploretheMoonandMars.2.Changethefollowingsentencesintothepresentperfectpassivevoice.EXAMPLE:
WehavemadeaplannAplanhasbeenmade.
(1)Myfriendhasboughtanewpersonalcomputer.Anewpersonalcomputerhasbeenboughtbymyfriend.
(2)Theshophasrepairedmycomputerveryquickly.Mycomputerhasbeenrepairedbytheshopveryquickly.(3)Anunknownvirushasjustattackedmycomputer.Mycomputerhasjustbeenattackedbyanunknownvirus.(4)Wehavenotsolvedtheproblemyet.Theproblemhasnotbeensolvedbyusyet.(5)Thecompanyhasgivenitscomputersawaytoalocalschool.Thecomputershavebeengivenawaytolocalschoolbythecompany.(6)Thescientistshavedevelopedakindofintelligentrobot.Akindofintelligentrobothasbeendevelopedbythescientists.3.Underlinetheuse
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