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现在完成时现在完成时助动词have/has+动词的过去分词1.肯定句：主语+have/has+过去分词+其他.2.否定句：主语+have/has+not+过去分词+其他.3.一般疑问句：Have/Has+主语+过去分词+其他?1.肯定句：主语+have/has+过去分词+其他.2.否定句：主语+have/has+not+过去分词+其他.3.一般疑问句：Have/Has+主语+过去分词+其他?--Yes,主语+have/has./--No,主语+haven’t/hasn’t.4.特殊疑问句：1)特殊疑问词(非主语)+have/has+主语+过去分词+其他？2)特殊疑问词(是句子主语)+have/has+过去分词+其他？4.特殊疑问句：1)特殊疑问词(非主语)+have/has+主语+过去分词+其他？2)特殊疑问词(是句子主语)+have/has+过去分词+其他？5.时间状语:already,yet,just,ever,never,before,twice,sofar,inthepastfewyears,bythistime,for+一段时间，since+时间点,since+一段时间+ago,since+过去式的句子…5.时间状语:already,yet,just,ever,never,before,twice,sofar,inthepastfewyears,bythistime,for+一段时间，since+时间点,since+一段时间+ago,since+过去式的句子…含义：表示过去发生或已经完成的某一动作对现在造成的影响或结果。过去的动作或状态从过去某一时刻开始，一直延续到现在，而且可能还要继续下去。含义：表示过去发生或已经完成的某一动作对现在造成的影响或结果。过去的动作或状态从过去某一时刻开始，一直延续到现在，而且可能还要继续下去。already,yet,ever,never,justyet常用于现在完成时的一般疑问句或否定句的句末。“用于疑问句中时，意为已经”；用于否定句中时，意为“还”。Notyet“表示尚未，还没”。already一般用于肯定句，用于疑问句时表示惊讶，出乎意料。常放于句中，实义动词之前，助动词之后。ever曾经用于疑问句中never从不带有否定意义just刚刚与现在完成时连用一般置句中for+一段时间=since+一段时间+agobuy/bought————havehadborrow/borrowed——havekeptarrive/arrived——havebeenin/atleave/left——havebeenawayopen——havebeenopenjoin——havebeeninbegin/start-----havebeenon1.现在完成时中，非延续性动词需要转换为相应的延续性动词。A:HaveyoueverbeentotheGreatWall?B：Yes,Ihave.Whataboutyou?A:Me,too.=SohaveI.=Ihaveeverbeenthere,too.So+助动词/be动词/情态动词+主语.A:HaveyoueverbeentotheGreatWall?B:No,Ihaven’t.Whataboutyou?A:Meneither.=NeitherhaveI.=Ihaven’tbeenthere,either.Neither+助动词/be动词/情态动词+主语.1.Bothhisparentslooksad.Maybethey________what'shappenedtohim.Ａ.knewＢ.haveknownＣ.mustknowＤ.willknow2.Hehas_____beentoShanghai,hashe?Ａ.alreadyＢ.neverＣ.everＤ.still一、单项选择。BB3.Thefamouswriter_____onenewbookinthepasttwoyearＡ.iswritingＢ.waswritingＣ.wroteＤ.haswritten4.--Ourcountry______alotsofar.--Yes.Ihopeitwillbeeven______.Ａ.haschanged;wellＢ.changed;goodＣ.haschanged;betterＤ.changed;betterDC5.ZhaoLan______already______inthisschoolfortwoyears.Ａ.was;studyingＢ.will;studyＣ.has;studiedＤ.are;studying6.We______XiaoLisinceshewasalittlegirl.Ａ.knowＢ.hadknownＣ.haveknownＤ.knewCC7.HarryPotterisaverynicefilm.I_______ittwice.Ａ.willseeＢ.haveseenＣ.sawＤ.see8.–ThesefarmershavebeentotheUnitedStates.–Really?When_____there?Ａ.willtheygoＢ.didtheygoＣ.dotheygoＤ.havetheygoneBB9.--______you___yourhomeworkyet?--Yes.I_____itamomentago.Ａ.Did;do;finishedＢ.Have;done;finishedＣ.Have;done;havefinishedＤ.will;do;finishB10.Hisfather______thePartysince1978.Ａ.joinedＢ.hasjoinedＣ.wasinＤ.hasbeenin11.--Doyouknowhimwell?--Sure.We_________friendssincetenyearsago.Ａ.wereＢ.havebeenＣ.havebecomeＤ.havemadeDB12.--Howlonghaveyou____here?--Abouttwomonths.Ａ.beenＢ.goneＣ.comeＤ.arrived13.Hurryup!Theplay_____fortenminutes.Ａ.hasbegunＢ.hadbegunＣ.hasbeenonＤ.beganAC14.It_____tenyearssinceheleftthearmy.Ａ.isＢ.hasＣ.willＤ.was15.MissGreenisn'tintheoffice.She_____tothelibrary.Ａ.hasgoneＢ.wentＣ.willgoＤ.hasbeen16.Thestudentshavecleanedtheclassroom,_____?A.sotheyB.don'ttheyC.havetheyD.haven'ttheyAAD17.______hasMr.WhitebeenamemberofGreenerChinasincehe_______toChina?A.Howsoon,comesB.Howoften,gotC.Howlong,cameD.Howfar,arrived18.Hisuncle_____formorethan9years.A.hascomehereB.hasstartedtoworkC.haslivedthereD.haslefttheuniversityCC