人教版高中英语必修二教案：unit 3 computers period 5 grammar

1、Unit3ComputersPeriod5Grammar教学方案I.Teachingcontents：ThePresentPerfectPassiveVoiceII.Teachingaims：1. UnderstandtheusesofthePresentPerfectPassiveVoice2.UsethePresentPerfectPassiveVoicecorrectlyIII.Keypoints&DifficultiesKeypoints:TogetthestudentstoknowthePresentPerfectPassiveVoiceandlearnhowtousethe

2、PresentPerfectPassiveVoice.TeachingDifficultiesToenablethestudentstousethePresentPerfectPassiveVoicecorrectlyIV.TeachingmethodsDiscussing,summarizingandpracticing.V.Teachingprocedure:Step1:Lead-inReviewtheverbtensesandtheFuturePassiveVoicetheyhavelearntinlastunit.Step2:Grammarexplanation.Teacherhelp

3、thestudentsdealwithhowtoexpressthePresentPerfectPassiveVoice.1.Thestructureofthepresentperfectpassivevoiceis:have/hasbeened现在完成时的主动语态表示举动发生在过去,到现在已经完成或对现在仍有阻碍。主动语态即主语为举动的实行者；主动语态即主语为举动的承受者。现在完成时的主动语态同它的主动语态一样，夸张过去的举动对现在构成的阻碍或结果，但主语为举动的承受者，表示“已经被。1).现在完成时主动语态确实信式为：have/has+been+done2).现在完成时主动语态的否定式为：

4、have/has+not+been+done3).现在完成时主动语态的一般疑征询句需将have/has提到主语的前面4).现在完成时主动语态的特不疑征询句为：疑征询词+have/has+been+done2.现在完成时的主动语态表达以下两个不雅念：1).说话时已经完成的举动或出现的结果。2).主语是举动举动的承受者。3.主动语态变主动语态的方法4.Practice.Step3:Exerciseforconsolidation.Studentstrytodotheexercise2onpage21,thenteachergiveguidanceandcheck.Step4:Homework.1.

5、TrytoremembertheformofthePresentPerfectPassiveVoice.2.Finishtheexercise3onPage21andexercise2onpage57.VI.Blackboarddesign.Unit3ComputersPeriod5Grammar教学方案1.Thestructureofthepresentperfectpassivevoiceis:have/hasbeened1).现在完成时主动语态确实信式为：have/has+been+done2).现在完成时主动语态的否定式为：have/has+not+been+done3).现在完成时主动语态的一般疑征