学习实践人教英语新课标必修2全册精品教案 Unit 3 Computer.docx

学习实践人教英语新课标必修2全册精品教案 Unit 3 Computer.docx

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学习实践人教英语新课标必修2全册精品教案Unit3Computer

人教英语新课标必修2全册精品教案（Unit3Computer）

　　Unit3computerPartone:

TeachingDesignPeriod1:

AsamplelessonplanforreadingAimsTotalkaboutcomputerToreadaboutcomputerProceduresI.warmingupwarmingupbytalkingaboutcomputerLookatthepicturesonpage17.whatarethey?

whatdotheyhaveincommon?

yes,theyarecomputers.Thenwhatisacomputer?

Acomputerisamachinewhichstoresknowledgeinitsmemoryanddoescalculationsonthatknowledge.Thisknowledgeisstoredinsymbols;itiscalleddata.Acomputerusuallyhasamonitortoshowresults.However,somecomputerscanspeak;thesecomputerscanbeusedforvoicemail.计算机室Acomputerfrequentlyrequiresabootdevice.Thebootdevicecontainsthecomputer’puterprogramscanbeinstalledontoacomputer.SomepeoplethinkthatcomputersarelessusefuliftheydonothaveaccesstotheInternet.TheythinkthisbecausetheInternetallowsthecomputerstosendandreceivedataandemailacrosstheworld.曙光3000巨型计算机Acomputerisnowalmostalwaysanelectronicdevice.Itusuallycontainsmaterialswhicharetoxic;thesematerialswillbecometoxicwastewhendisposedof.whenanewcomputerispurchasedinsomeplaces,lawsrequirethatthecostofitswastemanagementmustalsobepaidfor.Thisiscalledproductstewardship.Insomecountriesoldcomputersarerecycledtogetgoldandothermetals.Thisisdangerous,putersbecomeobsoletequickly.Veryoftentheyaregivenawayandnewonesreplacethemwithintwoorthreeyears.Tputerrecyclingisthuscommon.manyprojectstrytosendworkingcomputerstodevelopingnationssotheycanbere-puterjargon计算机行话computerjargonmeanswordstodowithcomputersandsurroundingtopics.knowingwhatthesewordsmeancanhelpyouknowmoreaboutcomputers.Somepeopleusethesewordstoimpressotherpeople.Examplesofjargon:

Bit-Thesmallestdataunit,caneitherbea“0.”ora“1.”.Byte-unitofdata.Seealsokilobyte,megabyte,GigabyteandNibblecPU–centralProcessingUnit,AnothernameforprocessorData-InformationstoredonacomputerDisk-Aplacetostoredata.Email-Electronicmail.GHz-Gigahertz.Usedoftenincorrectlytodescribethespeedofaprocessor.Butwithsome2.4GHzprocessorsfasterthan3.6GHzones,itisclearthatitisjustasalesmantrick.Load-GetdatafromadiskNibble-HalfaByteSave-PutdataonadiskRAm–random-accessmemory,themorethebetter.USB-UniversalSerialBus（通用串行总线，一种简化了插接多种附件的薄型插座）www-worldwideweb,partoftheInternetII.Pre-reading1.Questioningandanswering‑‑‑whatdoyouknowaboutcomputer?

●Electronicmachinecapableofperformingcalculationsandothermanipulationsofvarioustypesofdata,underthecontrolofastoredsetofinstructions.Themachineitselfisthehardware;theinstructionsaretheprogramorsoftware.Dependinguponsize,computersarecalledmainframes,minicomputers,andmicrocomputers.microcomputersincludedesk-topandportablepersonalcomputers.●Amulti-functionelectronicdevicethatcanexecuteinstructionstoperformatask.●Adevicethatacceptsinformation,processesit,andsuppliesanoutput.Acomputerusuallycontainsmemory,acontrolunit,arithmeticandlogicalunits,andameansforinputandoutput.●aprogrammablehardwarecomponentthatiscontrolledbyinternallystoredprogramsandthatcanperformsubstantialcomputationswithouthumanintervention.Acomputertypicallyconsistsofoneormoreprocessingunits,memoryunits,andassociatedperipheralinputandoutputdevices.●Relatedtoautomationandelectronicdataprocessing.TheLibraryofcongresscommonlyclassesmostcomputer-relatedbooksinHF5548,QA75-76,Z52,T385,andsomeTkranges.●amachineforperformingcalculationsautomaticallycalculator:

anexpertatcalculation●Aputersareconstructedfromcomponentsthatperformsimplewell-definedfunctions.Thecomplexinteractionsofthesecomponentsendowcomputerswiththeabilitytoprocessinformation.Ifcorrectlyconfiguredacomputercanbemadetorepresentsomeaspectofaproblemorpartofasystem.Ifacomputerconfiguredinthiswayisgive2.Discussingandsharing‑‑‑Howhavecomputerschangedourlives?

Somedaysoon,ifyouhaven’talready,you’puterterminals,orsmallcomputersconnectedviamodemtoordinarytelephonelines,shouldbeasubiquitousasthetelephoneitself.They’reamuchmoreusefulandhumanetoolthanthephone,andwithcorporateAmericabehindthemthenetworkswillbeeverywhere----changingourlivesmorethananytechnologysincetheautomobile.joiningacomputernetworkisthesameasjoiningacommunity.Smallsystemsarelikevillages,wherenewmembersareformallywelcomed.Thelargernetworks,theSourceandcompuServe,forexample,arecities-anonymous,fulloflifeandevents,butdifficulttofitinto.III.Reading1.ListeningandreadingtotherecordingofthetextwHoAmI?

Turntopage18andlistenandreadtotherecordingofthetext.Payattentiontothepauses,pronunciationandintonationofthenativereader.2.ReadingaloudandunderliningexpressionsNowwearetoreadthetextonceagainandunderlinealltheexpressionsinthetext.Putthemdownintoyournotebookafterclassashomework.collocationsfromwHoAmI?

beginas…,acalculatingmachine,bebuiltas…,followinstructionsfrom…,soundsimple,atthetime,atechnologicalrevolution,writeabook,make…work,solveproblems,becomehuge,hadartificialintelligence,gobackto…,thesizeof…,goby,changesize,becomesmallandthin,getquick,standtherebyoneself,beconnectedby…,shareinformationby…,talkto…,bring…into…,dealwith…,communicatewith…,servethehumanrace3.Reading,identifyingandsettlingAttention,please!

Itistimetoskimthetextonemoretimeandidentifythedifficultsentences.Tryanalyzingthestructuresofthedifficultsentencesanddiscussthemamongyourgroupmembers.youmayalsoputyourquestionstomeforhelp.chat（online）（在线）聊天Tochatistotalkaboutordinarythingsthatarenotveryimportant.youcanchattoonepersonortomanypeople.PeoplealsousethiswordnowforpartsoftheInternetwherewecantalkwithmanydifferentpeopleatthesametime.Usually,youchatontheinternetinachatroomormessagingservicelikeAoLInstantmessenger,yahoomessenger,ormSNmessenger.4.ReadingandtransferringScanthetextforinformationtocompletethetablebelow,describingthedevelopmentofcomputer.In1642In1822In1936In1960sIn1970sIV.closingdownbydoingcomprehendingexercisesTurntopage18andinpairsdothecomprehendingexercisesNo.1and2.Period2:

AsamplelessonplanforLearningaboutLanguageAimsTolearntouseThePresentPerfectPassiveVoiceTodiscoverusefulwordsandexpressionTodiscoverusefulstructuresProceduresI.warmingupbyreadingtothetapeTobeginwith,turntopage18,listeningtoandreadingtotherecordingofthetextwHoAmI?

Attentiongoestothepausesandintonation,aswellasthepronunciationofthereader.II.DiscoveringusefulwordsandexpressionsInpairsdotheexercises1,2and3onpages19and20.youmustfinishthemin10minutes.III.Learningaboutgrammar1.PassiveVoice—overviewTenseormodelPassiveSentenceSimplePresentTheToEFLexamisgiveneverysixmonths.SimplepastTheToEFLexamwasgivenlastmonth.SimpleFutureTheToEFLexamthisyearwillbegivenonoctober15.PresentcontinuousTheToEFLexamisbeinggiveneveryyear.PresentperfectTheToEFLexamhasbeengiveneveryyearsince1950.PastperfectTheToEFLexamhadbeengivenbeforetheVietnamwaroccurred.SimplemodalTheToEFLexamshouldbegiventoeveryForeignstudent.PastmodalTheToEFLexamshouldhavebeengiventoalltoenterUScolleges.2.ThePresentPerfectPassiveVoiceThestructureofThePresentPerfectPassiveVoiceis:

have/has＋been＋~edIV.ReadingaloudanddiscoveringNowgobacktopage18toreadaloudanddiscoverinthetextexamplesofThePresentPerfectPassiveVoice.Astheyearshavegoneby,Ihavebeenmadesmallerandsmaller.Sincethen,myfamilyandIhavebeenusedbybillionsofpeopletodealwithinformationwitheachotheraroundtheworldbytheInternet.V.Discoveringusefulstructureweshalldogrammarexercises1,2and3onpage20.VI.closingdownbydoingaquizcorrectthemistakesinthesepassivevoicesentencesExample:

Thehousewasbuildin1880.1.

　　3000employeeswerelayingoff.2.

　　Astorywillmadeup.3.

　　Anideawasputtedforwardfordiscussion.4.

　　Hasthebookbeengivebacktoyouyet?

5.

　　mybankloanwillbepayedoffinfiveyearstime.6.

　　Nothingcanbeholdagainstme.7.

　　ourallieswillbelendsupport.8.

　　Shehasneverheardof.9.

　　Shewasbeingknockeddownbyabus.10.

　　Shewaslettedoffwithafine.11.

　　Thecandlewasblowoutbythedraught.12.

　　Thecriminalwerelockedup.13.

　　Thefloodwaterwasbekeptbackbybarriers.14.

　　Theinconveniencewillmadeupforbythismoney.15.

　　Thekeysmusthavebeenbeingleftbehind.16.

　　Theoldcinemaisbeingpulldown.17.

　　Theprotestersbeingheldbackbythepolice.18.

　　Theroadwasblockingoff.19.

　　Thirtymorepeoplewerelaidofflastweek.20.

　　yourjacketcanbehangedupoverthere.Period3:

AsamplelessonplanforUsingLanguageAimsTodiscussaboutITTowriteareportaboutITToreadaboutandroidsorrobotsProceduresI.warmingupbytalkingaboutITwhatisInformationtechnology?

Informationtechnologyorinformationandcommunicationtechnologyisthetechnologyrequiredforinformationprocessing.Inparticulartheuseofelectroniccomputersandcomputersoftwaretoconvert,store,protect,process,transmit,andretrieveinformationfromanywhere,anytime.II.ListeningandwritingTurntopage21.

　　LookatthepicturesandlistentoaconversationaboutdifferentkindsofinformationtechnologyorIT,discussandwritedowningroupstheadvantagesanddisadvantagesofeachkind.III.SpeakingandwritingSupposeyouandyourpartneraregoingtohelpchoosecomputersforyourschool.Nowtalkaboutthespecialthingseachofthecomputercandoandwriteareporttoyourheadmaster.IV.Reading,underliningandspeakingItissaidthatcomputerscouldbeputintoandroidsorrobots.ReadthetextAndy—TheAndroid,underliningalltheexpressionsandthinkofthefunyoucouldhave!

ExpressionsfromAndy—TheAndroidpartofafootballteam,onceayear,gettogether,playafootballgame,beas…as…,infat,looklike…,onthefootballteam,runfast,thinklikeahuman,shoutto…,incomputerlanguage,haveagoodshotforagoal,getsecondplace,winthefirstplace,haveanewkindofprogram,improveone’sintelligence,createabettersystem,playagainstahumanteam,inaway,program…with…,makeup…,afterall,withthehelpof…V.writingaletterSupposeyouareanandroid.whatwouldsaytoaspoiledchildwhowouldnotdohishomework?

writealettertotheboy.AndroidAnandroidisanartificiallycreatedbeingthatresemblesahumanbeing.ThewordderivesfromGreekAndr-‘man,human’andthesuffix-eidesusedtomean‘ofthespecies,kind,alike’.Theworddroid,arobotintheStarwarsuniverse,isderivedfromthismeaning.Some