Unit3ComputersGrammar1.Ialready(open)thedoor,soyoucancomin.2.Wejust(sweep)thefloor,sothefloorisveryclean.3.He(be)illforthreedays.4.I(know)himsincetenyearshaveopenedhaveswepthasbeenhaveknown1)表过去发生或已完成动作对现在造成的影响或结果。常与already;just;yet等连用2）表过去开始，延续到现在的动作或状态。延续性动词，时间状语since,for用括号中的动词的正确形式填空ThePresentPerfectPassiveVoice现在完成时的被动语态1)Astheyearhavegoneby,Ihavebeenmadesmallerandsmaller.2)Awrist-wornPChasbeeninventedrecently.3)ManynewbuildingshavebeenbuiltinTianTaisince1990.4)—Hasthedoorbeenpainted?—No，ithasn’t5)Thedeskshavenotbeencleaned.Discovering:have/has++done肯定式:否定式:疑问式:Have/Has＋主语＋been＋done?have/hasnot+been+done构成：been1)Manynewhouses(build)inthevillageinthepastfewyears.2)Themoonalready(visit)byman.3)—Joan(give)youanEnglish-Chinesedictionaryyet?—No.ButI(give)anEnglish-Englishdictionary4)Papermoney(use)foroverathousandsyears.5)Howlongherwork(finish)?用动词的正确形式填空havebeenbuilthasbeenvisitedHavegivenhavebeengivenhavebeenusedhasbeenfinished1.Thecinemahasshownmorethan20famousfilms.2.Theyhavemadeaplantoplantmoretrees.3.Hehasofferedmeagoodjob.Morethan20famousfilmshavebeenshowninthecinema.Aplanhasbeenmadetoplantmoretrees.改为被动语态Ihavebeenofferedagoodjob./Agoodjobhasbeenofferedtome.Exercises1.Bothmybrotherworkatthepowerstationthat___inmyhometown.A.hassetupB.hasbeensetupC.wassetupD.issetup2.----_____thesportsmeetwillbeputoff.A.I’vebeentoldB.I’vetoldC.I’mtoldD.Itold3.Allthepreparationforthetask____,andwe’rereadytostart.A.completedB.completeC.hadbeencompletedD.havebeendone4.----Howlong____atthisjob?----Since1990.A.wereyouemployedB.haveyoubeenemployedC.hadyoubeenemployedD.willyoubeemployedBADB5.Whenandwheretogofortheon-salaryholiday____yet.A.arenotdecidedB.havenotbeendecidedC.isnotbeingdecidedD.hasnotbeendecidedB6.Nopermissionhas____foranybodytoenterthebuilding.（MET1988）A.beengivenB.givenC.togiveD.begivingA7.Untilnow,hishomeworkhasnot_____finished.A.beingB.beC.beenD.tobeC8.Thewindows_____,youneednotwashitagain.A.iswashedB.waswashedC.hasbeenwashedD.willbewashedC9.Thesnowonthestreet____,youcangohomenow.A.hasbeenclearedB.hadbeenclearedC.willbeclearedD.wasclearedAsummary•现在完成时的被动语态•1基本结构：•2肯定式:•3否定式•4疑问句式:have/has+been+donehave/has＋been＋donehave/has＋not＋been＋doneHave/Has＋主语＋been＋done?
