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JourneytospaceUnit3LanguageinuseI'vejustmadeamodelspaceship.Astronautshavealreadybeentothemoon.Hasitarrivedyet?Wehavenotfoundlifeonanyotherplanetsyet.Languagepractice现在完成时现在完成时已经完成的动作，强调对现在有影响。1还没有做或从来没有做过的事情。2做一件事做过几次3见过、听过的最......的4从过去一直持续到现在的动作或状态5Ihavealreadycleanedthetoilet.Ihavejustwateredtheflowers.Ihaven'tdrunkcoffeeyet.IhaveneverbeentoTailian.IhavewatchedTitanictwice.Hehasbeentothetoiletfivetimes.HeisthefattestmanIhaveeverseen.ThisisthemostbeautifulmusicIhaveeverheard.HehaslivedinBeijingfor30years.HehaslivedinBeijingsince2000.肯定句否定句一般疑问句肯定答语否定答语主语+have/has+动词过去分词+其他主语+haven't/hasn't+动词过去分词+其他Have/Has+主语+动词过去分词+其他Yes,主语+have/has.No,主语+haven't/hasn't.A-A-A型A-B-C型A-B-B型A-B-A型A-A-B型过去分词不规则变化putputputreadreadreadbeatbeatbeatencomecamecomerunranrunhavehadhadmakemademadedodiddonegowentgonealreadyjustneveryetever常与现在完成时连用的副词：肯定句疑问句和否定句置于句末其余的常置于助动词have/has之后，过去分词之前（中考链接）The3DTitanicisamovingfilm.Myparentshaveseenittwice______.A.yetB.alreadyC.neverD.almost强调过去发生的动作对现在造成的影响或结果，和现在有关系。现在完成时只表示这个动作是过去某个时间发生的，和现在没有关系，可以用确定的过去时间做状语。一般过去时Ihavejustseenthefilm.Isawthefilmjustnow.IhavejustbeentoLondon.Iwenttherelastmonth.我刚去过伦敦，是上个月去的。当A问对方把自己的书放在何处时，他在意的是书目前在哪儿，故用现在完成时。B的回答着重的是当时的动作，故用一般过去时。A:Wherehaveyouputmybook?Ican’tfindit.B:Iputitonyourdeskyesterday.无明确过去时间状语时，判断使用现在完成时还是一般过去时的标准是：看该行为是否对现在有影响，即该句强调或在意什么，着重点就在那里。表示“某人去了某地，现在仍在某地或在途中。havegoneto现在完成时终极考点：表示“某人去过了某地”，人已经回来了。havebeento表示“在某地呆了多久”。havebeenin/atHeisn'tathome;hehasgonetoHunan.HehasbeentoCanadathreetimes.HowlonghaveyoubeeninParis?1.—Lily,whyareyoustillhere?Schoolisoverforhalfanhour.—BecauseI______mytaskyet.Istillneedonemorehour.A.won’tfinishB.didn’tfinishC.haven’tfinishedD.hadn’tfinished2.He_____inthisfactoryfor20yearsalready.A.willworkB.worksC.hasworkedD.isworking中考链接3.—Mr.Liwillcheckourhomeworkthisafternoon.______you______it?—Notyet.I'mdoingitrightnow.A.Do;finishB.Had;finishedC.Will;finishD.Have;finished4.—TheAmazingSpiderMan2isonthesedays.It’sfantastic.—Really?ButI_______ityet.A.didn’tseeB.won’tseeC.haven’tseeD.isnotseeing5.Julie’sfather________toLondonlastmonth.He________therethreetimes.A.went;hadgoneB.hasgone;hasbeenC.went;hasbeenD.hasbeen;hadgone6.—Dave,wewillleavein10minutes.Areyouready?—No,I______ourguidebookandtowelsyet.A.don’tpackB.didn’tpackC.havepackedD.haven’tpacked7.—____yourson______acamera?—No.He______onethissummervacation.A.Has...bought;willbuyB.Did...buy;boughtC.Does...buy;boughtD.Does...buy;willbuy8.—WhyisMr.Yangstillintheteachers’office?—Maybehe________hisworkyet.A.doesn’tfinishB.hasn’tfinishedC.haven’tfinished9.—WillyougoandseethemovieNetMotherwithme?—Thankyou.ButI_____italready.A.sawB.haveseenC.seeD.willsee10.Ibeganwatchinghereanhourago,butnownothing_____yet.A.happenB.willhappenC.happenedD.hashappened11.Ourmathteacher______inourschoolfor20yearsandhe_____herewhenhewas23yearsold.A.hastaught,hascomeB.taught,comesC.taught,cameD.hastaught,came12.—I’dliketointroducemybestfriendtoyou,Peter.—Thankyou,Lucy.Butwe_____already.A.meetB.metC.willmeetD.havemetAstronautshave(1)_______beentothemoonbuttheyhavenotbeentoanyotherplanets.However,aspaceshiphas(2)_____arrivedonMarsandithas(3)______sentbackphotosoftheredplanets.IstherelifeonMars?Wedonotknow(4)______.alreadyjustalreadyyet1.Completethenewswithalready,justandyet.SpaceshiponMars!☺ThespaceshiphasgonetoMars.Ithasgonetherebutithasnotcomebackyet.☺Astronautshavebeentothemoon.Theywentthereandthentheycameback.2.Lookatthesesentences.Nowchoosethecorrectanswer.1.Astronautshavebeen/gonetothemoonandreturned.2.Thespaceshiphasbeen/goneintospace.Itwilltravelfortendays.3.Theastronauthasbeen/gonetothespacestation.Hewillcomebacktomorrow.4.Thespaceshiphasbeen/gonetothespacestation.Itbroughtbacktwoastronauts.Astronautshasbeentothemoonandreturened.宇航员登陆过月球，并且返回了。return“返回”，动词。return=go/comeback,因此不能说returnback.IhavetoreturntoNanningtoday.我今天得返回南宁。returnsth.to...“把某物归还......”Ireturnedsomebookstothelibraryyesterday.昨天我把一些书还给了图书馆。have/hasbeenhave/hasgone1.Aspaceship________toMars.Itiscomingbacktotheearthnextyear.2.Lotsofastronauts________tothespacestation.Theyfounditveryinteresting.3.Someastronauts_________tothemoontwice.4.TwoBritishastronauts________tothespacestation.TheywillcomebackinJanuary.hasgonehavebeenhavebeenhavegone3.Completethesentenceswiththeexpressionsinthebox.Nicky:I’vejust(1)_______(watch)agreatTVprogrammeaboutspace.Didyouknowthatscientistshave(2)________(discover)wateronMars?Bill:Yes,Idid.Andscientists(3)________(try)tofindlifeonMarsnow.Nicky:Yes,they’relookingforlifebutthey(4)__________(notfind)anythingyet.Bill:ThereweresomenewphotosofMarsinthenewspapertoday.(5)______you_____(see)themyet?Nicky:Yes.They’reamazing!4.Completetheconversationwiththecorrectformoftheverbsinbrackets.haven'tfoundseenHavewatcheddiscoveredaretrying6.Completetheemailwiththewordsinthebox.beenjustmetneverreadwrittenyetreadbeennevermetwrittenyetjustI've____finishedreadingagreatbookatshcool.我在学校读完一本很棒的书。finishdoingsth.“完成做某事”Hefinishedpaitingthewall.他漆完了墙壁。（中考链接）Peterturnedoffthecomputerafterhefinished__________(write)ane-mail.writ