初中英语八年级下册 Section A Grammar focusa-4c【省一等奖】

SectionAGrammarfocus4a—4cthePresentPerfectTenseBYYuYizhong现在完成时Conclusion：现在完成时表示一个到现在时间为止已经完成了的、对现在有影响的动作或状态。（现在完成时的已完成用法）What’sthePresentPerfectTense?

什么是现在完成时Ihavevisitedsomebeautifulcities.Afriendhastoldmeaboutanicelittlefishrestaurantnearhere.Theyhaveputupalotofhigh-risebuildingsrecently.JohnMartin:Oh,lookatthathugeapartmentblock!

XiaoLi:Yes,theyhavejustcompletedit.1234Conclusion：现在完成时表示一个从过去某一刻开始延续到现在的动作或状态，这个动作或状态也许还会持续下去，常与for,since或一段时间连用。（现在完成时的未完成用法）AmIrightinthinkingthatyouhavelivedhereallyourlife?Thefamilyhaslivedinthistownfortwentyyears.HehasstudiedEnglishsincehewas12yearsold.IhaveknownhimsincelastDecember.What’sthePresentPerfectTense?

什么是现在完成时1234IhaveseenquitealotofChina.Wehavestartedaholidayclubforchildren.Theyhaveputupalotofhigh-risebuildingsrecently.Ithasbeenverysuccessful,sofar.

Haveyoucollectedanyinformationaboutoccupations?—HasTomleftourtown?—Yes,hehas.—Andhowlonghashebeenaway?—Abouttwohours.肯定句：主语+have/has+过去分词.Ithasnotbeenverysuccessfulyet.(hasnot=hasn’t)否定句：主语+have/hasnot+过去分词.疑问句:(疑问词)Have/Has+主语+过去分词?Wehavenotfinishedthework.(havenot=haven’t)1.2.3.SentenceStructures现在完成时的构成We’vealreadydoneourbesttohelppeoplefindemployment.They’veputupalotofhigh-risebuildingsrecently/lately.Wehaveseenthatfilmbefore.Haveyoucollectedanyinformationaboutoccupations

yet?Conclusion:

现在完成时的已完成用法往往同表示不确定的过去时间状语连用，如already,recently,lately,just,yet,ever,before等。TimeExpressionswithPresentPerfectTense现在完成时常用的时间短语Mywife’sjustboughtabeautifuldressfromoneoftheshopsthere.HaveyoueverbeentoGulangyuIsland?123456

表示从过去已经开始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的一段时间状语”连用，如“for+时间段”、“since+过去时间点”、“since+过去时的从句”、“since+一段时间+ago”。且for与since引导的时间状语可以相互转换。PresentPerfectTenseContinuousVerbORNon-ContinuousVerb

延续性动词还是非延续性动词JohnMartinhas

cometoXiamen.JohnMartinhascometoXiamenforthreeyears.JohnMartinhasnotcometoXiamenforthreeyears.Conclusion:非延续性动词（终止性动词）的肯定式不能和一段时间的状语连用，应改用相应的延续性动词或其它句型。1JohnMartinhasfallenillsincehemovedtoXiamen.JohnMartinhasbeenillsincehemovedtoXiamen.JohnMartinhasnotfallenillsincehemovedtoXiamen.23456Helefthishometownfiveyearsago.Hehaslefthishometownforfiveyears.Hehasbeenawayfromhishometownforfiveyears.Itis/hasbeenfiveyearssincehelefthishometown.Themoviebegantenminutesago.Themoviehasbegunfortenminutes.Themoviehasbeenonfortenminutes.leavebeawaydiebedeadfinishbeovermarrybemarriedjoinbeinbeginbeonbuyhaveborrowkeepmovetoliveinNon-ContinuousVerbContinuousVerb

非延续性动词转换为延续性动词Iboughtthisbikethreeyearsago.Ihavehadthisbikeforthreeyears.Itis/hasbeenthreeyearssinceIboughtthisbike.1.She_______thisbookfornearlythreeweeks.A.hasborrowedB.haslentC.hasboughtD.haskept2.Ithasbeentenyears____theoldmandied.A.whenB.whileC.beforeD.since√√Exercises1.Howlonghaveyouhadthatbikeover there?

I’vehaditforthreeyears.2.Howlonghashissonownedthetrain andrailwayset?

He’sowneditsincehisfourthbirthday.3.Haveyoueverplayedfootball?

Yes,IdidwhenIwaslittle,butIhaven’t playedforawhilenow.4aRewritethesentencesusingfororsince.1.JimisinJapan.Hearrivedtherethreedaysago.________________________________________________2.Theyareveryhungry.Theirlastmealwastenhoursago.________________________________________________3.Ihaveacamera.Iboughtitin2009.________________________________________________4.IknowAnna.Ifirstmetherthreeyearsago.________________________________________________5.Lindaisill.ShebecameillonMonday.________________________________________________Theyhavebeenhungryfortenhours/sincetenhoursago.JimhasbeeninJapanforthreeyears.Ihavehadacamerasince2009.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.4bFillintheblankswiththecorrectformsoftheverbsinbrackets.I_______________(neverbe)tothewaterparkbefore.Iwantto_____(go)nextmonthbeforetheweathergetstoocold.2.They_________________(neverown)anypets,butthey___________(alwayswant)tohaveadog.3.We_________(have)apianosincelastNovember.We_______(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy____________(notbe)backtotheirhometownfortwoyears.They______(miss)theirhometownalotandhopetovisittheplacenextyear.5.Thismuseum_________(be)hereforover20years.It_____(be)oneoftheoldestbuildingsinthissmalltown.

haveneverbeengohaveneverownedalwayswanthavehadboughthaven’tbeenmisshasbeenis4cFillinth