7BUnit7BUnit55GrammarGrammar一般一般过去过去时时(Simple(Simplepastpasttense)tense)Weusethesimplepasttensetotalkaboutthingsinthepast.(我们用一般过去时谈论过去发生的事情。)1、表示在过去某个时间发生的动作或存在的状态。Hewashereyesterday.Igotupatsixthirtyyesterdaymorning.Mumwateredtheflowerstenminutesago.2、表示过去习惯性或经常性的动作或状态。Myfatheroftenwenttoworkbybuslastyear.WhenIwasachild,Ioftenlistenedtomusic.Iwasastudentintheschooltwoyearsago.用法：一般过去式通常用于以下几种情况3、表示主语在过去所具备的能力和性格。Hecouldswimacrosstheriverattheageoften.Theycouldn’tgotoschoolatthattime.注意1：在一般过去式的句子中，谓语动词要用过去式。Igetupinthemorning.havebreakfasthavelessonsintheafternoon.playfootballdomyhomeworkhavesupperintheevening.gotobedIgotupyesterdaymorning.hadbreakfasthadlessonsyesterdayafternoon.playedfootballdidmyhomeworkhadsupperyesterdayevening.wenttobed规则动词的过去式原形过去式动词加ed的规则lookwashlivediestudyworrystopplanlookedwashedliveddiedstudiedstopped一般在动词原形末尾加ed动词以e结尾的只加d以辅音字母加y结尾的动词，先将y变i再加ed.末尾只有一个辅音字母的重读闭音节，先双写这个辅音字母再加edworriedplanned练一练1.use________2.kick________3.start________4.answer________5.love________6.stop_________7.play________8.carry_________9.chat________10.live_________11.cry________12.need_________neededkickedstartedansweredlovedusedplayedcarriedchattedlivedcriedstopped规则动词过去式词尾规则动词过去式词尾-ed-ed的读音的读音读音规则读音规则读读音音例词例词在元音/浊辅音后/d/moved/mu:vd/moved/mu:vd/enjoyedenjoyedlistenedlistened在清辅音后s,p,k,sh,t,ch,/t/passed/pa:st/passed/pa:st/helpedhelpedaskedasked，，finishedfinishedwatchedwatched在td后/id/needed/’ni:did/needed/’ni:did/NochangecostcostputputChangethevowelwritewroteknowknewChangetheconsonantmakemadespendspentChangethevowel(s)andleaveleftbuyboughtththt不规则动词的过去式Let’slearnmore!•read-----•eat-------•come----•give-----•get-------•tell------readatecamegavegottold•do------•have----•hear----•...
