初中現(xiàn)在完成時講解課件.ppt

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ThePresentPerfecttense,,PresentPerfectTense現(xiàn)在完成時,主語+have/has+過去分詞（pp）,助動詞,無意義,現(xiàn)在完成時的結(jié)構(gòu),Winterhasalreadycome，,,,,willitstillbefarinspring?,主語+have/has+過去分詞（pp）,否定形式haven’t(havenot）+過去分詞hasn’t(hasnot)+過去分詞,疑問句把助動詞have/has放在句首,現(xiàn)在完成時的結(jié)構(gòu),,,注：主語若是第三人稱單數(shù)助動詞用has,Youhaveplantedallthetrees.Ihaveplantedallthetrees.He/shehasplantedallthetrees.Theyhaveplantedallthetrees.,區(qū)別have和has的用法,主語若是第三人稱單數(shù)助動詞用has,1)表示到現(xiàn)在為止已經(jīng)完成或剛剛完成的動作。Nowwehaveplantedallthetrees.Hehasjustcomeback.Theyhavebuiltmanybuildingsinthiscity.,現(xiàn)在完成時的用法,2)表示過去發(fā)生的動作,強調(diào)結(jié)果或?qū)ΜF(xiàn)在的影響。Someonehasbrokenthewindow.(窗戶現(xiàn)在是壞的)Ihavealreadylostthekey.(我現(xiàn)在沒有鑰匙)Ihaven’treadthatbookyet.(不了解書的內(nèi)容)Ihavejustcleanedmyhands.(手是干凈的),常與already(已經(jīng)),yet(已經(jīng)),just(剛剛),ever(曾經(jīng))等詞連用.,already:常用于肯定句中.yet:常用于否定句,疑問句尾.,3)表示從過去開始并持續(xù)到現(xiàn)在的動作或狀態(tài)，常與包括現(xiàn)在在內(nèi)的一段時間的狀語連用。ShehaslearnedEnglishfor5years.HehaslivedinBeijingsince5yearsago.,since:(自…以來)1)since+時間點Hehasstayedheresince5o’clock.2)since+時間段+agoHehasstayedheresince5hoursago.3)since+從句ShehastaughtEnglishsincehecamehere.for:(長達）for+時間段Hehaskeptthebookfor2weeks.,since,for的用法:,用for或since填空,Mr.BrownhashadhisTV______15years.I’vetakendrivinglessons_______lastmonth.Mysisterhashadhercellphone______amonth.Myfriendshaven’tvisitedme______fewdaysago.Wehaven’tusedourcar_____alongtime.Shehasn’thadagoodcupofcoffee_____years.Tomhaswornglasses_______hewas7yearsold.,for,since,for,since,for,for,since,注：并非所有for作為時間狀語的句子都用現(xiàn)在完成時搞清一般過去時和現(xiàn)在完成時的區(qū)別,Iworkedhereformorethantwentyyears.(我現(xiàn)在已經(jīng)不在這里工作了)Ihaveworkedhereformorethantwentyyears.（現(xiàn)在我仍在這里工作）,疑難點,辨析havebeento和havegoneto,MyfatherhasgonetoShanghaiforameeting.他（已經(jīng)）去了上海。,MyfatherhasbeentoShanghaiforameeting.他（曾經(jīng)）去了上海。,ShehasbeentoChina.她（曾經(jīng)）去過中國。（人已經(jīng)回來了）,,havebeentosomeplace.曾經(jīng)去過某地，已經(jīng)回來．hasgonetosomeplace.某人去了某地，還沒有回來．,ShehasgonetoChinalastweek.上周她去了上海。（人可能回來了也可能沒回來）,用have/hasbeento,have/hasgoneto填空：1.—Whereisyourbrother?—He____________theshop.He’llbebacksoon.2.—______youever_________toAmerica?—Yes,I___________NewYorktwice.3.—Hereyouareatlast!Where_____you_____?—I_____________London.4.—David_____________Australia.—I’msurehe’salreadyarrived.5.—IsBennyhere?—No,he__________theschoollibrary.Heleftfiveminutesago.,hasgoneto,Havebeento,havebeento,havebeen,havebeento,hasgoneto,hasgoneto,,9.He________(go)toschoolonfooteveryday.10.____you______(find)yoursciencebookyet?11.Ifit____(be)finetomorrow,Illgowithyou.12.Thestudents____________(read)Englishwhentheteachercamein.13.Look!Themonkey__________(climb)thetree.14.Mymother__________(come)toseemenextSunday.15.Ivelostmypen._________you________(see)itanywhere?,goes,have,found,is,werereading,isclimbing,iscoming,Have,seen,,1.I____already____(see)thefilm.I________(see)itlastweek.2._____he____(finish)hisworktoday?Notyet.3.Myfather____just____(come)backfromwork.Heistirednow.4.Where’sLiMing?He__________(go)totheteacher’soffice.5.I__________(work)heresinceI______(move)herein1999.6.SofarI_______________(make)quiteafewfriendshere.7.Howlong________theWangs______________(stay)here?Fortwoweeks.8.I________just___________(finish)myhomework.,have,seen,saw,Has,finished,has,come,hasgone,haveworked,moved,havemade,,have,stayed,have,finished,,1.have,seen,saw2.Has,finished3.has,come4.hasgone5.haveworked,moved6.havemade7.have,stayed8.have,finished9.goes10.have,found11.is12.werereading13.isclimbing14.iscoming15.Have,seen,THEEND,