八年级英语上册 现在完成时的用法课件 人教新目标版.ppt

thePresentPerfectTense,Thekeyisntinhispocketsnow.Hehaslosthiskey.,Theyareintheroomnow.,Theyhavecomeintotheroom.,past,now,Yesterday,wecleanedtheclassroom.,Now,theclassroomiscleanbecausewehavecleanedit.,用法1,强调过去发生的动作对现在产生的结果或影响,1.Myfatherboughtmanybooksformeyesterday.Now,Ihavealottoreadbecause_2.Isawthisfilmlastweek.Now,IknowthisfilmbecauseI_.3.Ifinishedmyhomeworkyesterday.Now,IcangiveittotheteacherbecauseI_,myfatherhasboughtmanybooksforme.,haveseenitbefore,havefinishedit.,“仍然，还”用在疑问句和否定句中。Ihaventreadthisbookyet.Haveyouhadbreakfastyet?,already:,Yet:,“已经”通常用于肯定句中。Ihavealreadypostedtheletter.有时，也用在疑问句中表示惊讶。Haveyoueatenupallthefoodalready?,构成：have/has+动词过去分词,时间状语：already，yet，ever，never，just，before,“从来不”用在否定句中。Ishefamous?Ihaveneverheardofhim.,ever,never,“曾经”通常用于疑问句和肯定句中。Ihaveeverseenthisfilm.HaveyoueverbeentotheUSA?,“以前”用在完成时中，放在句尾。haveneverreadthiskindofbooksbefore.,just,before,“刚刚”用在陈述句中。Ihavejustboughtanovel。,Shebegantoworkin1999.Shestillworksherenow.Shehasworkedatthisschoolfor2years.,now,past,IbegantoteachEnglishatthisschoolfiveyearsago.,IhavetaughtEnglishatthisschoolfourfiveyears.,用法2：,过去发生的动作一直延续到现在。,1.Iamadoctor.IbegantoworkwhenIwas22.Now,Iam26.I_forfouryears.2.WewenttotheUSAlastMonday.TodayisMonday.We_(stay)intheUSAsincelastMonday.,haveworked,havestayed,sinceandfor,Thewomanhasworkedatthisschoolfor2years.(sincetwoyearsago),since2yearsago,since1998;,sinceshecametotheschool),for+一段时间,since+点时间,一、用for和since填空。,_threehours_threeoclock_twodays_yesterdayafternoon_Icamehere_lastSunday,_aweek_alongtime_1997_twoweeks_threeyearsago_lastmonth,for,since,for,since,since,since,for,for,since,for,since,since,1.Theyveknowneachothersince_.A.1995B.threeyears2.IvebeeninterestedinChinesefor_.A.lastyearB.oneyear3.Shehasbeenadoctorfor_.A.twoyearsB.twoyearsago4.Ivehadaheadachesince_.A.IgotupthismorningB.fivehours5.Wevebeenherefor_.A.onehourB.oneoclock,A,A,B,A,B,6.Myparentshaveownedthishousefor_.A.alongtimeB.manyyearsago7.Theyvebeeninlovesince_.A.lastspringB.threemonths8.Wehaveknowneachothersince_.A.oneyearB.lastyear9.-Howlonghaveyoubeenlikethis?-Since_.A.lastnightB.twodays10.-Howlonghassheworkedhere?-Shehasworkedherefor_.A.1993B.sixyears,A,A,B,A,B,Exercise根据所给情况，用just,already或yet造句。1.Afterlunchyougotoseeafriendatherhouse.ShesaysWouldyoulikesomethingtoeat?Yousay:No,thankyou.Ivejusthadlunch.(havelunch)2.Joegoesout.Fiveminuteslater,thephoneringsandthecallersaysCanIspeaktoJoe?Yousay:Imafraid_.(goout),hehasjustgoneout,3.Youareeatinginarestaurantthisevening.Thewaiterthinksyouhavefinishedandstartstotakeyourplateaway.Yousay:Waitamoment!_(not/finish)4.Youaregoingtoarestaurantthisevening.Youphonetoreserve(预定）atable.LateryourfriendsaysShallIphonetoreserveatable?Yousay:No,_it(do),Ihaventfinishedityet.,Ihavealreadydone,5.Youknowthatafriendofyoursislookingforajob.Perhapsshehasbeensuccessful.Askher.Yousay:_?(find)6.Annwenttothebank,butafewminutesagoshereturned.SomebodyasksIsAnnstillatthebank?Yousay:No,_.(comeback),Haveyoualreadyfoundthejob,Shehasalreadycameback,比较现在完成时和过去时的区别：*现在完成时所表示的是过去的行动所早成的现在的情况。*一般过去时表示的是过去发生的事实,现在完成时不能和确定的过去时间状语连用，如：yesterday,lastyear,in1976，twodaysago,justnow但可以和一些不确定的时间状语连用，也可和包括现在在内的时间状语连用，如：,already,yet,before,latelyrecently,once,twice,ever,never。1)Shehasalreadycome.2)Ihaventreadityet.,*gocomeleavedie等词语表示的动作是一时的，不能延续，不能与for、since等表示一段时间的词连用，如不能说：Hehasgonefortwomonths.(F)但可以说：Hehasbeenawayfor2months.,总结现在完成时：1、构成：have/has+过去分词。2、概念：(1)表示过去或已经完成的某一动作对现在成的影响或结果。常与下列状语连用：already,just,yet,ever,never,before（2）表示过去已经发生，持续到现在的动作或状态，可以和表示从过去某一时刻延续到现在（包括“现在”在内）的一段时间的状语连用。a.for和表示一段时间的词组连用。如：for3yearsb.since和表示过去某一时刻的词或词组连用。如：since1997,sincetwoyearsago,sincelastweek,动词的过去式以及过去分词,AAA:putputputletletletABB:standstoodstoodABA:becomebecamebecomeABC:eatateeaten,现在完成时专项练习单项选择。1、Bothhisparentslooksad.Maybethey_whatshappenedtohim.（呼和浩特.Knew.haveknown.mustknow.willknow2、Hehas_B_beentoShanghai,hashe?.already.never.ever.still3、HaveyoumetMrLi_?.just.ago.before.amomentago4、Thefamouswriter_onenewbookinthepasttwoyear.iswriting.waswriting.wrote.haswritten5、Ourcountry_alotsofar.Yes.Ihopeitwillbeeven_.haschanged;well.changed;good.haschanged;better.changed;better6、Zhao_already_atthisschoolfortwoyears.was;studying.will;study.has;studied.are;studying7、We_XiaoLisinceshewasalittlegirl.know.hadknown.haveknown.knew8、HarryPotterisaverynicefilm.I_ittwice.willsee.haveseen.saw.see,9、ThesefarmershavebeentotheUnitedStates.Really?When_there?.willtheygo.didtheygo.dotheygo.havetheygone10、_you_yourhomeworkyet?Yes.I_itamomentago.Did;do;finished.Have;done;finished.Have;done;havefinished.will;do;finish11、Hisfather_thePartysince1978.joined.hasjoined.wasin.hasbeenin12、Doyouknowhimwell?Sure.We_friendssincetenyearsago.were.havebeen.havebecome.havemade13、Howlonghaveyou_here?Ae.arrived14、Hurryup!Theplay_fortenminutes.hasbegun.hadbegun.hasbeenon.began15、It_tenyearssinceheleftthearmy.is.has.will.was16、MissGreenisntintheoffice.she_tothelibrary.hasgone.went.willgo.hasbeen17、Myparents_Shandongfortenyears.havebeenin.havebeento.havegoneto.havebeen18、Thestudentshavecleaned