課前延伸：1.analyticaladj.分析的

n.analysis

2.calculatev計算

n.calculation

計算器calculator3.普遍的，通用的，宇宙的adj

universal4.簡化vt.Simplify

adj

simple5.operatorn.(電腦)操作員；接線員

v.operate6.合邏輯的，合情理的adj.logicaladv.logically7.工藝，科技，技術(shù)n.technologyadj.technological8.真實，事實，現(xiàn)實n.reality9.personaladj.私人的，個人的，親自的

adv.personally10.revolutionn.革命

v.revolute11.智力，聰明，智能elligent12.解決，解答vt.Solven.solution13.applicationn.應(yīng)用，用途，申請

v.apply14.探索；探測；探究v.explore15.不論怎樣無論如何adv.anyhow短語1.把……與……相比compare…with2.從……時起from….on3.走過，經(jīng)過gothrough4.結(jié)果asaresult

5.如此……以至于so….that…6.在某種程度上inaway

7.withthehelpof

在……的幫助下8.dealwith

處理，安排，對付Unit3ComputersLearninggoals(教學(xué)目標(biāo))

(1)Learnsomewordsandexpressions.

(2)Knowaboutthedevelopmentofthecomputer.

(3)Developthestudents’readingskills.LookatthefollowingpicturesandsaytheirEnglishnames.

abacuscalculatorhugecomputerPClaptopPDAhugecomputerPCPDAabacuscalculatorlaptop1.What’sthemainideaofthetext?A.Thecomputerwantstofind“whoheis”.B.Thefunctionalchangeofthecomputer.C.Thecomputerbecomespopulararoundtheworld.D.Thedevelopmentofthecomputer.

Topicsentences:Para1

OvertimeIhavebeenchangedquitealot.Para2Thesechangesonlybecamepossibleasmymemoryimproved.Para3Sincethe1970smanynewapplicationshavebeenfoundforme.

Carefulreading

Q1:Whobuiltthefirstanalyticalmachine?Q2:

Whowasthenextimportantpersontodesigncomputers?

CharlesBabbageAlanTuring

Q3:Asacomputer,doyouknowmygoal?Mygoalistoprovidehumanswithalifeofhighquality.Development

EarlydaysNameFunctionPoorStrongAcalculatingmachineSimplifydifficultsumsAn________machineThinklogicallyandproduceananswerquicklyA_________machineSolvedifficult______________________analytical

universal

mathematicalproblemsDevelopmentNetworktimesMemorystoredin

TubesLargeSmall___________Smallchips

ApplicationsCommunication

Narrow

WideFinance_______Robots__________Medicaloperations_______________TransistorsTradeSpacerockets

Mobile

phonesStep3:DiscusionDoyouknowtheadvantagesanddisadvantagesofthecomputer?Youcanusethefollowingphrases:

Advantagescommunicatewithlistentothemusicseefilms&watchnewsplaygamesdoshoppingsavealotoftime

DisadvantageswastetoomuchtimeinplayingcomputergameschatontheInternethavelittletimetostudyusethecomputerwrongly

1.In1936myrealfather，AlanTuring，wroteabookabouthowIcouldbemadetoworkasa“universalmachine”tosolveanydifficultmathematicalproblem.[句式分析]⑴本句的主干為myrealfatherwroteabook；⑵介詞about后接how引導(dǎo)的賓語從句[原句試譯]在1936年，我真正的父親艾倫·圖靈寫了一本書，講述了怎樣使我成為一臺“通用機器”來解決任何數(shù)學(xué)難題。Summary:

Ibeganasa_______machinein1642inFrance.In1822Iwasbuiltasan_______machine.Thenin1936AlanTuringwroteabookandbuilta______machine.Astheyearshave______,Ihavebeenmade______.Thereweretimeswhenmysize______changed.Andmymemorybecame_____large_____Icouldn’tbelieveit.Inthe1960stheygavemeafamily_________byanetwork.Iwasableto_________________withothersthroughtheWorldWideWeb.Sincethe1970smanynewapplications______________for