Unit 3 The Internet Discovering Useful Structures 人教版必修二

Unit3TheInternetDiscoveringusefulstructuresPresentPerfectPassiveVoice现在完成时被动语态Knowtheform,themeaningandthefunctionofthepresentperfectpassivevoice.TalkaboutthingsthathavebeendonebytheInternet.LearningObjectivesⅠ.LeadinYouhaveslainanenemy.你杀死了一名敌人。Anenemyhasbeenslain.我方击杀一名敌方。Anallyhasbeenslain.我方一名队友被击杀。Yourturrethasbeendestroyed.我方防御塔被摧毁。Ⅱ.ReviewThePresentPerfectTense现在完成时Definition:①表示到现在为止已经完成或刚刚完成的动作。②表示过去发生的动作,强调结果或对现在的影响。③表示从过去开始并持续到现在的动作或状态。Structure:主语+have/has+V-过去分词(done)present(now)futurepastHowdoweformthepresentperfectpassivevoice?Structure现在完成时被动语态现在完成时的被动语态have/has

donebe

donehave/has

beendone现在完成时表示说话时已经完成的被动性的动作或结果，主语是动作的承受者。activepassiveⅢ.PresentationPresentPerfectPassiveVoice现在完成时的被动语态Thestudentshavecleanedtheclassroom.Theclassroomhasbeencleaned.Youneedn’tcleanitnow.Structure肯定式：主语+have/hasbeendone否定式：主语+have/hasnot

beendone一般疑问句：have/has+主语+beendone…？特殊疑问句：疑问词+have/has+主语+beendone…？already已经（肯定句）yet已经（否定句或者疑问句）recently/lately最近sincethen从那时起eversince自那以来ever曾经sofar/uptonow/tillnow/untilnow迄今为止foralongtime很长一段时间bynow到现在为止inrecentyears在最近几年里in/during/overthepast/lastyears在过去的几年里Ⅱ.Review常与现在完成时连用的时间状语找与现在完成相对应的时间状语。找时主语与动词构成被动关系。圈主确定谓动形式：have/has(not)beendone定谓ABCV.Summary现在完成时被动语态的解题步骤Tom____________(work)inthelibraryeverynightoverthelastthreemonths.1.hasworkedActivity2-高考链接Morepublictransport___________(build)inChinabynow,makingiteasierforpeopletotravel.2.hasbeenbuiltActivity2-高考链接Noagreement（协议）

__________________(reach)yesterdayaftermanyroundsoftalks.3.wasreachedActivity2-高考链接Despitethepreviousroundsoftalks,noagreement_________________(reach)sofarbythetwosides.4.hasbeenreachedActivity2-高考链接BYYUSHENHowdoweformthepresentperfectpassivevoice?Fillintheblank.have/hasbeen+v-ed主动语态变被动语态的原则“三变”原句主语by的宾语宾语主语

谓语由主动被动“三不变”原句意思不变原句时态不变原句主谓宾以外成分不变TalkaboutsomethingthathasbeendoneIV.PracticeActivity1-ChangethesentencesintothepresentperfectpassivevoiceWehavebuiltmanyhousesinthepasttenyears.Manyhouseshavebeenbuilt

byusinthepasttenyears.主变宾，宾成主，现宾前把by来补。注意不规则动词的过去分词变化。Example1：Change：Attention：BYYUSHENActivity2Changethesentencesintothepresentperfectpassivevoice.

EXAMPLEThey’vebuiltakindofnewPCwithmorefunctions.→AkindofnewPChasbeenbuiltwithmorefunctions.1

Ihavedownloadedthesoftwaretohelpmyphonebatterylastlonger.→2

Someonehaslostanidentitycard.→3

HaveyouconfirmedtheWi-Fipassword?→4

Haveyoupressedthebuttonyettocopythefile?→5

Hasanyonemadeacommentabouttheonlinedatabase?→Thesoftwarehasbeendownloadedbymetohelpmyphonebatterylastlonger.Anidentitycardhasbeenlostbysomeone.HastheWi-Fipasswordbeenconfirmedbyyou?Hasthebuttonbeenpressedyetbyyoutocopythefile?Hasa/anycommentbeenmadebyanyoneabouttheonlinedatabase?IV.PracticeActivity1-ChangethesentencesintothepresentperfectpassivevoiceHehasgivenhersomemoney.①Shehasbeengivensomemoneybyhim.②Somemoneyhasbeengiventoherbyhim.动词包含双宾语，则把间宾变成主，或将直宾变成主，但间宾前必加to/for。Example2：Change：Attention：IV.PracticeActivity1-ChangethesentencesintothepresentperfectpassivevoiceHehasthoughtofawayofdoingit.Awayofdoingithasbeenthoughtofbyhim.动词短语要完整，介词副词不能省。Example4：