优秀课件牛津译林版8b-unit3-Grammar-2-

GrammarUnit3Onlinetours1.—WhathappenedtoDickyesterday?—He_______offhisbikeonthewaytotheschool.A.fellB.isfallingC.wasfallingD.hasfallen2.I_______mysistersixtimestillnowbutherlinewasalwaysbusy.A.hadphonedB.wasphoningC.havephonedD.havebeenphoning一般过去时表示过去某时发生的动作或单纯叙述过去发生的事情，与现在没有关系

pastpresentDanielwenttoBeijingtwoyearsago.现在完成时属于现在时，表示过去已发生的动作或存在的状态，一直持续到现在DanielhaslivedinBeijingfortwoyears.pastpresentpastpresentDanielboughtanewcomputerlastmonth.Danielhasboughtanewcomputer.(Hehasacomputernow.)pastpresent一般过去时表示过去某时发生的动作或单纯叙述过去发生的事情，与现在没有关系

现在完成时属于现在时，表示过去已发生的动作或存在的状态，其影响到现在还存在，强调的是过去对现在的影响.pastpresentHevisitedCanadain2010and2011.现在完成时表示到目前为止，某动作或状态发生的HehasbeentoCanadatwice.pastpresent一般过去时表示过去某一时段发生的动作或单纯叙述过去某时段发生的事情，与现在没有关系

一、构成不同Theylivedherein2011.他们2011年住在这里。Wehavelivedhereforthreeyears.我们已经在这里住了3年了。一般过去时：主语+谓语动词的过去式现在完成时：have／has+V-ed现在完成时与一般过去时的区别三、时间状语不同Didyouwatchthatfilmlastweek?你上周看那部电影了吗？Shecamebackyesterday.她是昨天回来的。Hisfatherhasbeenateachersince1968.他父亲从1968年以来一直当老师。—Haveyouever

beentoLondon?—No,Ihaveneverbeenthere.—你曾经去过伦敦吗？—没有，以前从没去过。一般过去时通常与表示过去的具体的时间状语连用。如：yesterday,lastweek,twoyearsago,justnow,in2002，inthepast等；而现在完成时则常与表示不确切的时间副词或起点是过去,终点到现在,的时间段连用如already,yet,ever,never,just，recently,beforesince...,for...,in/over/duringthepast...years,sofar,till/untillnow,thesedays,等。I________(visit)thePalaceMuseumwithmygrandparentstheotherday.I________(climb)MountHuanglastsummer.visitedclimbedCompletethesentenceswiththecorrectformsofthewordsinbrackets.(P41A)IamhappythatI___________(learn)toswim.______youever______(try)thefamousTianjinBaozi?Havetriedhavelearnt(already)I________________(finish/just)myhomework.Millie_______(finish)herhomework20minutesago.2.I______(write)anemailtomyfriendyesterday.Daniel__________________(write/already)twoemails.havejustfinishedfinishedwrotehasalreadywrittenCompletethesentenceswiththecorrectformsofthewordsinbrackets.(P41B)3.I____(be)inHainanlastmonth.Someofourclassmates____________(notbe)toHainanyet.4.I_________(live)inSunshineTownsinceIwasborn.Daniel____(live)inNanjingin2007.washavenotbeenhavelivedlivedyesterday

lastweektwoyearsagojustnowin2002inthepastSince2002foraweekin/over/duringthepast...yearssofartill/untillnowthesedaysalreadyyeteverneverjustrecentlybefore一般过去时现在完成时时M:

(you/be/ever)toNanjing?S:Yes,I

(be)therethreetimes.M:When

(you/go)therelast?S:Lastsummer.I

(spend)aweekthere.M:

(you/like)it?S:Ohyes.I

(have)agreattimethere.I

(visit)manyplacesofinterestand

(eat)lotsoflocalfood.M:Luckyyou!I

(be/never)there.HaveyoueverbeenhavebeendidyougospentDo