高中英语优秀教案：unit3 computers period2 learning about language优秀教案 新人教版必修2

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1、Period2LearningaboutLanguageTheGeneralIdeaofThisPeriod：Thisperiodincludesrevisionofthetext、learningaboutlanguage.Fromthisperiodthestudentswilllearnhowtousesomeofthekeywordsandexpressionsinthetextanddosomeexercisesforconsolidation，andlearnhowtousethePrese

2、ntPerfectPassiveVoice.TeachingAims：1.Helpthestudentstolearntousesomeusefulwordsandexpressions.2.Enablethestudentstolearnhowtousethepresentperfectpassivevoice.TeachingImportantPoint：Theuseofthepresentperfectpassivevoice.TeachingDifficultPoints：Howtomaster

3、theusagesofsomeimportantwordsandphrasesandthePresentPerfectPassiveVoice.TeachingMethods：1.Task-basedlearning.2.Cooperativelearning.3.Explanationandpractice.TeachingAids：1.Ataperecorder.2.Amultimedia.TeachingProcedures：Step1RevisionT：Boysandgirls，inlastpe

4、riodwelearnedsomethingaboutthehistoryanddevelopmentofcomputers.Nowwhowouldliketoretellthetextwiththehelpofthesefigures?S1：Letmetry.In1642，acalculatingmachinewasusedinFrance.Thenin1922，theAnalyticalMachinewasmadebyCharlesBabbage.Itcouldfollowinstructionsf

5、romcardswithholes.In1936，AlanTuring，therealfatherofcomputers，wroteabooktodescribehowcomputerscouldbemadetoworkandbuilta“universalmachine”tosolveanymathematicalproblem.Later，peoplediscoveredthecomputerhad“artificialintelligence”.Inthe1960s，thecomputergoth

6、isnewtransistors.Itssizewastotallychangesatthattime.Andintheearly1960s，thefirstfamilyofcomputerswereconnectedtoeachother.In1970s，computershavebroughtintopeople’shomes.Nowcomputershavebeenusedbybillionsofpeopletodealwithinformationandcommunicatewitheachot

7、heraroundtheworldbytheInternet.T：Congratulations!You’vedoneverywell.Nowtrytodothesametoyourpartners，OK!Step2WordsandExpressionsTask1T：PleaseturntoPage19andfinishDiscoveringUsefulWordsandExpressions.Atfirst，lookatEx.1.Fromthereadingpassage，findthewordsand

8、expressionswiththefollowingmeanings.Now，tenstudentswillbeaskedtogivethewords.Whocan?Volunteers!Checktheanswerstogether.Task2.T：Welldone.NowpleaselookatEx2.andcompletethepassagewithsomeofthewordsabove.Payattentiontotheusean