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动词过去式和过去分词的变化规则动词过去式和过去分词有规则变化和不规则变化两种。Ⅰ.规则变化:1.一般情况直接加ed，如ask—asked,work—worked2.以不发音的e结尾，只加d，如love—loved,dance—danced3.以辅音字母加y结尾，把y变为i，再加ed，如try—tried,study—studied4.以一个元音字母和一个辅音结尾的重读闭音节结尾的动词(以重读闭音节或r音节结尾而末尾只有一个辅音字母),先双写末尾这个辅音字母,再加ed,如stop—stopped,permit—permitted注：A.以l结尾的动词,尾音节重读时,双写l,如control—controlled;尾音节不重读时,双不双写都可以，如travel—traveled(美)/travelled(英)。B.特例:picnic—picnicked—picnicked(去野餐),traffic—trafficked—trafficked（交易,在…通行）另外,还有很多动词的过去式和过去分词是不合乎上述规则的,需要熟记.(见后)C.读音与说明:①.-ed在清辅音音素后发音为[t]:helped,liked,finished,fetched,stopped,clapped②.-ed在浊辅音和元音后发音为[d]:believed,changed,planned,preferred,followed,stayed③.-ed在[t]、[d]后发音为[id]:wanted,needed,admitted,permittedII.不规则动词表:(1)AAA型（动词原形、过去式、过去分词同形）cost（花费）costcostshutshutshutcut（割）cutcutspitspit/spatspit/spat(英)hit（打）hithithurt伤害）hurthurtlet（让）letletput（放）putputread（读）readread(2)AAB型（动词原形与过去式同形）beat（跳动）beatbeaten(3)ABA型（动词原形与过去分词同形）become（变成）becamebecomeawakeawokeawokencome（来）camecomerun（跑）ranrun(4)ABB型（过去式与过去分词同形）dig（挖）dugdugbuildbuiltbuiltget（得到）gotgot/gottencatchcaughtcaughthang（吊死）hangedhangeddealdealtdealthang（悬挂）hunghungfeedfedfedhold（抓住）heldheldfindfoundfoundshine（照耀）shoneshoneforbidforbade/forbadforbiddensit（坐）satsatpaypaidpaidwin（赢）wonwonsendsentsentmeet（遇见）metmetshootshotshotkeep（保持）keptkepttelltoldtoldsleep（睡）sleptsleptwinwonwonsweep（扫）sweptsweptfeel（感觉）feltfeltsmell（闻）smelt/smelledsmelt/smelledleave（离开）leftleftbuild（建设）builtbuiltlend（借出）lentlentsend（传送）sentsentspend（花费）spentspentlose（丢失）lostlostburn（燃烧）burntburntlearn（学习）learntlearntmean（意思是）meantmeantcatch（抓住）caughtcaughtteach（教）taughttaughtbring（带来）broughtbroughtfight（战斗）foughtfoughtbuy（买）boughtboughtthink（想）thoughtthoughthear（听见）heardheardsell（卖）soldsoldtell（告诉）toldtoldsay（说）saidsaidfind（找到）foundfoundhave/has（有）hadhadmake（制造）mademadestand（站）stoodstoodunderstand明白understoodunderstood(5)ABC型（动词原形、过去式与过去分词三者不同形）begin（开始）beganbeguntake（取）tooktakendrink（喝）drankdrunkmistake（弄错）mistookmistakenring（铃响）rangrungride（骑）roderiddensing（唱）sangsungdo（做）diddoneswim（游泳）swamswumwrite（写）wrotewrittenblow（吹）blewblowngo（去）wentgonedraw（画）drewdrawnlie（平躺）laylainfly（飞）flewflownsee（看见）sawseengrow（生长）grewgrownwear（穿）worewornknow（知道）knewknownbe(am,is,are)（是）was,werebeenthrow（投掷）threwthrownshow（出示）showedshownbreak（打破）brokebrokenchoose（选择）chosechosenforget（忘记）forgotforgotten(forgot)bearboreborne/bornspeak（说，讲）spokespokendrawdrewdrawnwake（醒）wokewokendreamdreamt/dreameddreamt/dreameddrive（驾驶）drovedrivenhidehidhiddeneat（吃）ateeatenlaylaidlaid放置fall（落下）fellfallenlieliedlied撒谎give（给）gavegivenlielaylain躺rise（升高）roserisenseesawseenshakeshookshakenstealstolestolencan----couldmay---mightwill---wouldshall---shouldmust----must