高二英语下学期unit11

-1-Unit11ScientificachievementⅠ.BriefStatementsBasedontheUnitScienceandtechnologyarepartofproductiveforces.Themodernsocietyhasprovedit.Asweallseenow,scientificachievementshavechangedthewholeworldandmadepeoplebreakawayfromignoranceandbackwardness.Thesocietyhasmadegreatprogress.Thisunitisarrangedaroundthecentraltopic—scientificachievement.InWarmingup,thereareseveralpicturesaskingstudentstotalkaboutthemostsignificantscientificachievements.TheSpeakingpartintroducesfourdifferentscientistswhowanttogetmoneytocompletetheirprojectswhichareveryhelpfultohumanbeings.Thereadingmaterial—Zhongguancun,whichiscalledChina’sSiliconValley,isthenewcentreforChinesescienceandtechnology.Bystudyingthisunit,studentsalsoknowthatChinesehistoryisfilledwithgreatachievementsinscienceandtechnology.Inparticular,sincetheyear1995theChinesegovernmentputforwardaplanfor“rejuvenatingthenationbyrelyingonscienceandeducation”andthishashelpedChinesescientistsmakemanybreakthroughs.ThisunitpresentsfoursuchresultsinIntegratingSkills.AstoGrammar—WordFormation,teachershouldletstudentsmastersomeknowledgeofformingaword,andknowhowtousestemsandaffixestoformacompound.Ⅱ.TeachingGoals1.Talkaboutscienceandscientificachievement.2.Practiseexpressingintentionsandwishes.3.LearnaboutWordFormation(1).4.Writeapersuasionessay.Ⅲ.BackgroundInformation1.TheInfluenceoftheComputerAbouttenyearsago,thecomputerwasastrangemachine.Notmanypeopleunderstoodit.Notmanypeoplesaidyestoit.Today,muchofthatischanging.Thefirstcomputersystemwasintroducedforuseinbusinessinthemid-1950s.Sincethen,thenumberofcomputersystemsusedinbusiness,governments,andinstitutions(公共机构)hasgrownrapidly.In1975,about250000systemswereinuseintheUnitedStates.Thisfigureisgrowingbytensofthousandseveryyear.Theelectroniccomputerisanimportantfactorinourlives.Eachyearweusecomputersmoreandmoretohelpustocollectdataandtoprovideuswithinformation.Atonetime,peoplethoughtcomputerswereonlyusefulforbanks,departmentstores,andgovernments.Buttodaytherapidlyincreasingnumberofcomputersareusedformanyotherpurposes.Haveyoueverstoppedtothinkhowyouareaffectedbycomputer?Theclothesyouwearwereprobablymadewiththehelpofacomputer.Thenewspaperyoureadcouldhavebeeneditedandtypedbyacomputer.Evenradioprogramsareoftenpreparedbycomputers.Computerstodayareplayingimportantrolesineducation,transportationandmedicine.Theyareusedtopredicttheweather,toexaminetheocean,andtodevelopdefencesystems.Theyarebeingusedbybusinesses,governments,andinstitutions.Thereisnoreasontothinkthattheirusewilldecrease(减少).Computerswillbecomeagreaterpartofourlives.Theinfluenceofthecomputerisgreat.Thelistofitsusescouldgoonandon.Althoughthefirstcomputerwasonlyintroducedinthemid-1950s,computersnowaffectmillionsofpeopleincountlesswayseveryday.2.TheInformationRevolutionTheinformationrevolution:Howdoesitconcernyou?ComputersAreChangingYourWorld.Tenyearsago,in1986,desktopcomputerswerejustbeginningtomaketheirentranceintothe-2-worldofbusiness.Now,theyareinvading(涌入)thefamilyhomeatarapidpace.Moreimportantly,however,theyarealsochangingthewaywelookattheworld.Theinformationsuperhighwayisnowopentoincreasingnumbersofordinarypeople.Thesuperhighwayisprovidingordinarypeoplewithimmediateaccesstoahugeamountofinformation.Itisalsogivingthemalmostunlimitedopportunitiesofcommunicationwithpeoplearoundtheworld.Ordinarypeoplenowhavepowertogainknowledgeandtolinkupwithsomanyfellowcitizenoftheworld.Thishasneverhappenedbeforeinthehistoryofthehumanrace.InformationSuperhighwayTheglobalcomputernetworkiscalledtheInternet.Largecomputers(calledservers)fromallovertheworldhavebeenlinkupwithsatellites.Fromtheirhome,ordinarypeopleusetheircomputersandtheirtelephonelinestolinkuptotheseservercomputers.Theycanthenaccesscomputersoverseasandfindinformationonalmostanytopictheycanthinkof.Theycanreadforeignnewspapers,findoutaboutthelatesttrendsinmusic,films,booksandfashionthroughlibrarycatalogues(目录),andfindresearchdataonalmostanysubject.OtherActivitiesontheInternetIftheInternetusershaveacreditcard（信用卡）,theycanshopforgoodsandservicesfromtheothersideoftheworld.Theycanalsojointhousandsofnewsgroups(called“bulletinboards”,thatiselectronicmessagecentreskeptincomputers).Inthesenewsgroups,theInternetuserscantakepartindiscussionsonmanydifferenttopicswithcomputersusersaroundtheworld.Itisalsopossibletosendletterselectronicallytopeopleoverseasthroughthiscomputernetwork.Thisfunctionofthecomputeriscalled“e-mail”or“electronicmail”.Theletterssentarrivealmostinstantlyattherecipient’s(接受者)servercomputerontheothersideoftheworld.Thecostofsendingthee-mailisafraction(小部分)ofthecostofanairmailletter,afaxoratelephoneconversation.Ⅳ.TeachingTime:FourperiodsTheFirstPeriodTeachingAims:1.Learnandmasterthefollowing.(1)Newwords:engineering,solar,significant,mankind,constitution(2)EverydayEnglish:IfIgotthemoney,Iwould…Myplanisto…Ihopethat…Iwant/wish/hope/intend/planto…I’dliketo…I’mthinkingof…2.Trainthestudents’listeningandspeakingabilities.3.Talkaboutscienceandscientificachievement,urgingthestudentstofurtherunderstandthesignificanceofscienceandscientificachievementa