初中現(xiàn)在完成時(shí)講解課件.ppt

ThePresentPerfecttense,PresentPerfectTense現(xiàn)在完成時(shí),主語+have/has+過去分詞（pp）,助動(dòng)詞,無意義,現(xiàn)在完成時(shí)的結(jié)構(gòu),Winterhasalreadycome，,willitstillbefarinspring?,主語+have/has+過去分詞（pp）,否定形式havent(havenot）+過去分詞hasnt(hasnot)+過去分詞,疑問句把助動(dòng)詞have/has放在句首,現(xiàn)在完成時(shí)的結(jié)構(gòu),注：主語若是第三人稱單數(shù)助動(dòng)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(dòng)詞用has,1)表示到現(xiàn)在為止已經(jīng)完成或剛剛完成的動(dòng)作。Nowwehaveplantedallthetrees.Hehasjustcomeback.Theyhavebuiltmanybuildingsinthiscity.,現(xiàn)在完成時(shí)的用法,2)表示過去發(fā)生的動(dòng)作,強(qiáng)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)Ihaventreadthatbookyet.(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(dòng)作或狀態(tài)，常與包括現(xiàn)在在內(nèi)的一段時(shí)間的狀語連用。ShehaslearnedEnglishfor5years.HehaslivedinBeijingsince5yearsago.,since:(自以來)1)since+時(shí)間點(diǎn)Hehasstayedheresince5oclock.2)since+時(shí)間段+agoHehasstayedheresince5hoursago.3)since+從句ShehastaughtEnglishsincehecamehere.for:(長(zhǎng)達(dá)）for+時(shí)間段Hehaskeptthebookfor2weeks.,since,for的用法:,用for或since填空,Mr.BrownhashadhisTV_15years.Ivetakendrivinglessons_lastmonth.Mysisterhashadhercellphone_amonth.Myfriendshaventvisitedme_fewdaysago.Wehaventusedourcar_alongtime.Shehasnthadagoodcupofcoffee_years.Tomhaswornglasses_hewas7yearsold.,for,since,for,since,for,for,since,注：并非所有for作為時(shí)間狀語的句子都用現(xiàn)在完成時(shí)搞清一般過去時(shí)和現(xiàn)在完成時(shí)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(diǎn),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(guó)。（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.Hellbebacksoon.2._youever_toAmerica?Yes,I_NewYorktwice.3.Hereyouareatlast!Where_you_?I_London.4.David_Australia.Imsurehesalreadyarrived.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.WheresLiMing?He_(go)totheteachersoffice.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,