2019-2020年高中英语人教版必修2 Unit 3 Computers period 2 教案1

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1、2019-2020年高中英语人教版必修2Unit3putersperiod2教案1TheGeneralIdeaofThisPeriod：Thisperiodincludesrevisionofthetext,learningaboutlanguage.Fromthisperiodthestudentswilllearnhowtousesomeofthekeywordsandexpressionsinthetextanddosomeexercisesforconsolidation，andlearnhowtousethePresentPerfectPassiveVoice.Teach

2、ingAims：1.Helpthestudentstolearntousesomeusefulwordsandexpressions.2.Enablethestudentstolearnhowtousethepresentperfectpassivevoice.TeachingImportantPoint：Theuseofthepresentperfectpassivevoice.TeachingDifficultPoints：Howtomastertheusagesofsomeimportantwordsandphrasesandthepresentperfectpassivev

3、oice.TeachingMethods：1.Task-basedlearning.2.Cooperativelearning.3.Explanationandpractice.TeachingAids：1.Ataperecorder.2.Amultimedia.TeachingProcedures：Step1RevisionT：Boysandgirls，inlastperiodwelearnedsomethingaboutthehistoryanddevelopmentofputers.Nowwhowouldliketoretellthetextwiththehelpofthes

4、efigures?S1：Letmetry.In1642，acalculatingmachinewasusedinFrance.Thenin1922，theAnalyticalMachinewasmadebyCharlesBabbage.Itcouldfollowinstructionsfromcardswithholes.In1936，AlanTuring，therealfatherofputers，wroteabooktodescribehowputerscouldbemadetoworkandbuilta“universalmachine”tosolveanymathemati

5、calproblem.Later，peoplediscoveredtheputerhad“artificialintelligence”.Inthe1960s，theputergothisnewtransistors.Itssizewastotallychangesatthattime.Andintheearly1960s，thefirstfamilyofputerswereconnectedtoeachother.In1970s，putershavebroughtintopeople’shomes.Nowputershavebeenusedbybillionsofpeopleto

6、dealwithinformationandmunicatewitheachotheraroundtheworldbytheInternet.T：Congratulations!You’vedoneverywell.Nowtrytodothesametoyourpartners，OK!Step2WordsandExpressionsTask1T：PleaseturntoPage20andfinishDiscoveringusefulwordsandexpressions.Atfirst，lookatEx.1.Fromthereadingpassage，findthewordsand

7、expressionswiththefollowingmeanings.Now，tenstudentswillbeaskedtogivethewords.Whocan?Volunteers!Checktheanswerstogether.Task2T：Welldone.NowpleaselookatEx2.andpletethepassagewithsomeofthewordsabove.Payattentiontotheuseandtheformsofthosewo