八年级英语下册 现在完成时课件 （新版）牛津版.ppt

,8BUnit2,狙击中考,Presentperfecttense现在完成时,构成:用法一：,表示过去发生的某一动作对现在造成的影响或产生的结果.现在完成时这一时态强调是过去动作与现在的联系,也就是强调现在的影响和结果.,have/has+过去分词,Adverbsoftime,before,bynow(sofar),once,twice,just,recentlyyet(否/疑),already(肯),ever,never,alloneslife,in/duringthepast/last5years,Exercises,1.I_(have)lunchalready.2._thetrain_(arrive),yet?3.Tome_never_(be)toChina.4.Thetwin_just_(see)myfather.5.Thetwins_(see)myfatherjustnow.6.Manytallbuildings_(build)inthepast5years.,havehad,arrived,has,been,has,seen,saw,havebeenbuilt,Has,用法二：for+一段时间since+时间点since+句子（一般过去时）E.g.Katehaslivedherefor3years.Katehaslivedheresince3yearsago.KatehaslivedheresinceshecametoChina.,表示过去某个时间开始的动作或存在的状态，一直持续到现在并可能还将持续下去。动词使用延续性动词。常与for或since引导的时间连用,常见非延续性动词和延续性动词的转变,arrive/come/gotodiebecomeaborrowleave/movebuyopenjoinstart/beginfinish/endcatchacoldgetupgettoknowgetoutclosewakeupgotosleepbecomeinterestedin,bein,bedead,have,keep,beaway/beout,bea,bein/amemberof,beopen,beon,beover,haveacold,beup,know,beout,beclosed,beawake,beasleep/sleep,beinterestedin,Exercises,Hisgrandfatherhasdied.(for2years)Thefootballmatchhasbegun.(since9:00a.m)Thetwinshavejoinedthearmy.(sincetheyare18yearsold)MyteacherhasjustleftNanjing.(for3days),Hisfatherhasbeendeadfor2years.,Thefootballmatchhasbeenonsince9:00a.m.,Thetwinshavebeensoldiers/beeninthearmysincetheyare18yearsold.,MyteacherhasbeenawayfromNanjingfor3days,have/hasgonetohave/hasbeentohave/hasbeenin,have/hasgoneto:已经去了某地或人还在途中，人还没有返回；have/hasbeento:曾经去过某地，现在已经回来了,后面可接表示“次数”的状语;have/hasbeenin:表示某人“已在某地停留一段时间，现仍在那里”，其后常带表示一段时间的状语。,Exercises,Tom在哪儿？他去书店买书了。我在北京待了5年了。Jack去过上海两次了,-WhereisTom?-Hehasgonetothebookshoptobuysomebooks.,IhavebeeninBeijingfor5years.,JackhasbeentoShanghaitwice.,Correcting,1.Ihaveborrowedthebookfor3months.2.Mybotherhasjoinedthearmysincehewas18.3.JackandTomhavelivedheresince5years.4.ThefilmhasbeenonsinceIhavecometothecinema.5.WhenhasMr.Licaughtabadcold?,havekept,hasbeenin/beenamemberofthearmy,since5yearsago/for5years,came,did,catch,6.Tenyearshavepassedsincetheygotmarried.7.JimhasgonetoBeijingfor