现在完成时讲解完整演示文稿

现在完成时讲解完整版演示文稿现在是1页\一共有16页\编辑于星期三优选现在完成时讲解完整版ppt现在是2页\一共有16页\编辑于星期三present(now)futurepast

PresentPerfectTense

现在完成时现在是3页\一共有16页\编辑于星期三主语+have/has+过去分词（pp）助动词,无意义

现在完成时的结构Winter

has

already

come，willitstillbefarinspring?现在是4页\一共有16页\编辑于星期三主语+have/has+过去分词（pp）否定形式haven’t(havenot）+过去分词

hasn’t(hasnot)+过去分词疑问句把助动词have/has放在句首

现在完成时的结构注：主语若是第三人称单数助动词用has现在是5页\一共有16页\编辑于星期三Youhaveplantedallthetrees.Ihaveplantedallthetrees.He/shehasplantedallthetrees.Theyhaveplantedallthetrees.

区别have和has的用法

主语若是第三人称单数助动词用has现在是6页\一共有16页\编辑于星期三1)表示到现在为止已经完成或刚刚完成的动作。Nowwehaveplantedallthetrees.Hehasjustcomeback.Theyhavebuiltmanybuildingsinthiscity.现在完成时的用法现在是7页\一共有16页\编辑于星期三2)表示过去发生的动作,强调结果或对现在的影响。Someonehasbrokenthewindow.(窗户现在是坏的)Ihavealreadylostthekey.(我现在没有钥匙)Ihaven’treadthatbookyet.(不了解书的内容)Ihavejustcleanedmyhands.(手是干净的)常与already(已经),yet(已经),just(刚刚),ever(曾经)等词连用.already:常用于肯定句中.yet:常用于否定句,疑问句尾.现在是8页\一共有16页\编辑于星期三3)表示从过去开始并持续到现在的动作或状态，常与包括现在在内的一段时间的状语连用。ShehaslearnedEnglishfor5years.HehaslivedinBeijingsince5yearsago.现在是9页\一共有16页\编辑于星期三since:(自…以来)1)since+时间点He

has

stayed

here

since

5

o’clock.2)since+时间段+agoHe

has

stayed

here

since

5

hours

ago.3)since+从句She

has

taught

English

since

he

came

here.

for:(长达）for+时间段Hehaskeptthebookfor2weeks.since,for的用法:

Takenotes

现在是10页\一共有16页\编辑于星期三用for或since填空Mr.BrownhashadhisTV______15years.I’vetakendrivinglessons_______lastmonth.Mysisterhashadhercellphone______amonth.Myfriendshaven’tvisitedme______fewdaysago.Wehaven’tusedourcar_____alongtime.Shehasn’thadagoodcupofcoffee_____years.Tomhaswornglasses_______hewas7yearsold.forsinceforsinceforforsince现在是11页\一共有16页\编辑于星期三注：并非所有for作为时间状语的句子都用现在完成时

搞清一般过去时和现在完成时的区别Iworkedhereformorethantwentyyears.(我现在已经不在这里工作了)Ihaveworkedhereformorethantwentyyears.（现在我仍在这里工作）疑难点现在是12页\一共有16页\编辑于星期三辨析havebeento和havegonetoMyfatherhasgonetoShanghaiforameeting.他（已经）去了上海。MyfatherhasbeentoShanghaiforameeting.他（曾经）去了上海。ShehasbeentoChina.

她（曾经）去过中国。（人已经回来了）havebeentosomeplace.曾经去过某地，已经回来．hasgonetosomeplace.某人去了某地，还没有回来．ShehasgonetoChinalastweek.上周她去了上海。（人可能回来了也可能没回来）现在是13页\一共有16页\编辑于星期三用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.hasgonetoHavebeentohavebeentohavebeenhavebeentohasgonetohasgoneto现在是14页\一共有16页\编辑于星期三9.He________(go)toschoolonfooteveryday.10.____you______(find)yoursciencebookyet?11.Ifit____(be)finetomorrow,I'llgowithyou.12.Thestudents____________(read)Englishwhentheteachercamein.13.Look!Themonkey__________(climb)thetree.14.Mymother__________(come)toseemenextSunday.15.I'velostmypen._________you________(see)itanywhere?goeshave,foundiswerereadingisclimbingiscomingHave,seen现在是15页\一共有16页\编辑于星期三1.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_______