人教新课标高中英语必修二Unit 3 Computers教案1Word文档格式.docx
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人教新课标高中英语必修二Unit 3 Computers教案1Word文档格式.docx
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(3)指导学生按类别归纳整理词汇,让学生学会有效地记忆词汇的方法;
(4)引导学生发现本单元重点语言结构,让学生自己发现并感悟相关的语言规律,在学习过程中培养语感。
III.教学计划
本单元分六课时:
第一课时:
WarmingUp,Pre-reading,Reading
第二课时:
Languagepoints
第三课时:
Learningaboutlanguage
第四课时:
Listening
第五课时:
Speaking,Reading,Writing
IV.教学步骤:
Period1WarmingUp,Pre-reading,Reading
TeachingGoals:
1.Toknowsomethingaboutcomputers.
2.Tolearnandtalkaboutcomputers.
TeachingProcedures:
Step1.Leading-in
Purpose:
ToactivatetheSsandarousethemtotalkabouttheimportanceofcomputersinmodernsociety.
AskSswhethertheyhaveacomputerornotandwhattheyuseitfor.Letthemtalkasmuchaspossible.
Step2.WarmingUp
TogetSstothinkaboutthedifferentwayscomputerscanbemade.
Pairwork
GetSstolookatthefollowingpictures,andthenaskthemtoanswerthequestions.
AhugecomputerAPC
AnotebookcomputerAcalculator
Anabacus
1.Whatarethey?
2.Whatdotheyhaveincommon?
3.Whatisacomputer?
SuggestedAnswers:
1.ahugecomputer,apersonalcomputer,anotebookcomputer,acalculator,anabacus
2.
(1)tobeusedtocalculate;
(2)operatebyhumanbeings;
(3)theyareallartificial;
(4)showfiguresinacertainway.
3.Acomputerisamachinewhichstoresknowledgeinitsmemoryanddoescalculationsonthatknowledge.Thisknowledgeisstoredinsymbols;
itiscalleddata.Acomputerusuallyhasamonitortoshowresults.However,somecomputerscanspeak;
thesecomputerscanbeusedforvoicemail.
Acomputerisnowalmostalwaysanelectronicdevice.Itusuallycontainsmaterialswhicharetoxic;
thesematerialswillbecometoxicwastewhendisposedof.Whenanewcomputerispurchasedinsomeplaces,lawsrequirethatthecostofitswastemanagementmustalsobepaidfor.Thisiscalledproductstewardship.
Step3.Pre-reading
ToactivateSs’interestaboutcomputers.
Groupwork
AskSsthefollowingquestionsandencouragethemtosaymore.
1.Howhavecomputerschangedourlives?
2.Whatdoyouknowaboutcomputers?
1.They’reamuchmoreusefulandhumanetoolthanthephone,andwithcorporateAmericabehindthemthenetworkswillbeeverywhere---changingourlivesmorethananytechnologysincetheautomobile.
2.Amulti-functionelectronicdevicethatcanexecuteinstructionstoperformatask.
Adevicethatacceptsinformation,processesit,andsuppliesanoutput.Acomputerusuallycontainsmemory,acontrolunit,arithmeticandlogicalunits,andameansforinputandoutput.
Aprogrammablehardwarecomponentthatiscontrolledbyinternallystoredprogramsandthatcanperformsubstantialcomputations(includingarithmeticandlogicoperations)withouthumanintervention.Acomputertypicallyconsistsofoneormoreprocessingunits,memoryunits,andassociatedperipheralinputandoutputdevices.
Step4.Reading
1.Skimming
1.Togetabriefunderstandingofthetext.
2.Totrainthestudents’listeningability.
First,letSsskimthetextandthenlistentotherecordingofthetext.Payattentiontothepausesandpronunciation.
2.Scanning
TogetSstohavesomedetailsinthetext.
Nowwearetoreadthetextagainandunderlinealltheexpressionsinthetext.Writethemdowninyournotebook.
3.FurtherReading
TogetSstogetmoredetailsaboutthetext.
Readthetextagainandfindtheinformationtocompletethetable,whichdescribesthedevelopmentofcomputer.
1642:
___________________________________________________
1822:
TheAnalyticalMachinewasmadebyCharlesBabbage.
____:
___________________________________________________
1940s:
_____:
Thefirstfamilyofcomputerswasconnectedtoeachother.
1970s:
Now:
Step5.Retell
Tohaveadeepunderstandingofthetext.
AskSstousethechartabovetoretellthedevelopmentofthecomputer.
Onepossibleversion:
I,acomputer,wasacalculatingmachinein1642inFrance.ThenIwasbuiltasanAnalyticalMachinein1822,whichwasatechnologicalrevolution.Ibecamea“universalmachine”in1936tosolveanymathematicalproblem.IwasnotverybigatfirstthenIbecamehuge,thesizeofalargeroombeforeIwasmadesmallerandsmaller.
Gettingnewtransistors,laterverysmallchipsIchangedmyshape.Iwasconnectedwithothercomputersandturnedouttopartofanetworkintheearly1960s.In1970sIwasbroughtintopeople’shomes,andcametheInternet.
Step6.Homework
1.Writeashortpassageaboutthedevelopmentofcomputers.
2.FinishEx1(P19),Ex2(P20).
Period2Languagepoints
Step1Wordstudy
DivideSsintofourgroupsandaskthemtodiscussthefollowingwords.
1.common
(1)mostwidelyknown;
ordinary:
EgHeisacommonsailor.
(2)havenothing/little/something/alotincommon
EgAtfirst,Ithinkweonlyhadonethingincommon,butsuddenlyIfeltwehadalotincommon.
EgThetwobrothershadeverythingincommonintheirmanners,butthetwosistershavelittleincommon.
EgTheyhavenothingincommonwithoneanother.
2.analytical分析的
EgThescientistanalyzedthemilkandfounditcontainedtoomuchwater.
3.technology科技;
技术
EgWiththedevelopmentoftechnology,wewillcureAIDSsoonerorlater.
4.calculate(v.)
1)tousenumberstofindoutatotalamount,distance,etc.计算;
核算
Wehaven’treallycalculatedthecostofthevacationyet.
2)toguesssthbyusingalltheinformationavailable推测,估计
Itisimpossibletocalculatewhatinfluencehehadonherlife.
5.Astimewentby,Iwasmadesmaller.随着时间的推移,我被弄得越来越小。
goby:
topass逝去,过去
Thingswillgeteasierastimegoesby.随着时间的推移,情况会有所改善。
6.totally:
completely完全地;
全部地;
整个地
Theycomefromtotallydifferentcultures.他们来自完全不同的文化。
7.sharewith:
tohaveorusesthatthesametimeassbelse共用,合用
Marysharesahousewiththreeotherstudents.玛丽和另外三个学生合住一间房子。
Sharein分享,分担
8.explore(v.)
1)totraveltooraroundanareaoracountryinordertolearnaboutit勘察;
探索;
考察
Thecityisbestexploredonfoot.最好是徒步考察这个城市。
2)examinesthcompletelyorcarefullyinordertofindoutmoreaboutit.探究,调查研究
TheseideaswillbeexploredinmoredetailinChapter7.这些想法将在第七章里作更详细地探讨。
9.inaway:
toacertainextent在某种程度上
Inawayyouareright,butthisnewtextbookistooboring.从某种程度上说你是对的,但是这本新教材是很枯躁的。
Intheway阻碍,妨碍
Step2.Homework
Usethewordsabovetomakesentencesandcheckthemwithyourpartner.
Period3LearningaboutLanguage
Step1.LearningaboutLanguage
1.Filltheblanksandchecktheanswersaltogether.
(1)Snowis_______(常见的)incoldcountries.
(2).Canyou_______(估计)thecostofthisjourney?
(3).The_________(分析)ofthesamplesonthemurderspotshowedsomevaluableclues
tothepolice.
(4)Ishallgoandseehim________(无论如何)
(5)He'
ssomekindof________(数学)genius.
(6).Heistoos________toworkoutsuchadifficultproblem.
(7).Heaskedhisfather'
so________abouthisplans.
(8).Howareyougoingtod________withtheletter?
(9).I________(完全)agreetoyourplan.
(10).Thisisat________beautifulpicture.
2.Changethefollowingsentenceswiththemeaningnotchanged.
(1)Ilikealotofwhatshelikes.→
Wehavealot____________.
(2)HarryhelpedmewithmyEnglish,soIlearntalot.→
ImadegreatprogressinEnglish_______Harry'
s______.
(3)Timepassedquickly.Petergrewintoatallyoungman.→
Withthetime______________,Peterbecameatallyoungman.
(4)Yousaiditwasveryspecial.Idon'
tthinkso.→
I_______withwhatyousaid.
(5)Inmyopinion,Mickeyisthekindofpersonweneed.→
_________,Mickeyistheverymanweneed.
3.Grammar
TogetSstohaveknowledgeofthisgrammarpoint:
presentperfectpassivevoice.
(1)Presentation
①Revisethegrammar:
thepresentpassivevoice.
am/is/are+done
②Revisethegrammar:
thepresentperfectvoice.
Have/has+done
③Explainthegrammar:
thepresentperfectpassivevoice.
——>
Have/hasbeen+done
(2)Practice
TogetSstohaveknowledgeofthegrammarthroughexercise.
①Filltheblankswiththecorrecttense.
A.–Thewindowisdirty.
-It____________________(notclean)forweeks.
B.---GeorgeandLucygotmarriedlastweek.Didtheyhaveabigwedding?
---No,I__________________(notinvite).
Didtheyhaveabigwedding?
.C.---Haveyoumovedtoyournewapartment?
---Notyet,it_______________(paint)atthemoment.
D.toomuch.Thestudentshavebeenmade__________(notplay)computergames
E.Sincethen,alldifferentkindsofinformation____________________(处理)bycomputers.
F.Hedoesn’tmindthestory_____________(编造)inthisway.
G.Doyouknowhowmanywebsitesthereare________________(连接)?
A.hasn’tbeencleanedB.hadn’tbeeninvitedC.isbeingpaintedD.nottoplayE.hasbeendealtwithF.beingmadeupG.tobeconnected
②TranslatingfollowingsentencesintoChineseandpayattentiontothepresentpas
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