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）cost cost shut shut shutcut（割）cut cut spit spit/spat spit/ spat(英)hit（打）hit hit hurt 伤害）hurt hurtlet（让）let let put（放）put putread （读）read read(2) AAB型（动词原形与过去式同形）beat（跳动）beat beaten(3) ABA型（动词原形与过去分词同形）become（变成）became become awake awoke awokencome（来）came come run（跑）ran run(4) ABB型（过去式与过去分词同形）dig（挖）dug dug build built builtget（得到）got got/gotten catch caught caughthang（吊死）hanged hanged deal dealt dealthang（悬挂）hung hung feed fed fedhold（抓住）held held find found foundshine（照耀）shone shone forbid forbade/forbad forbiddensit（坐）sat sat pay paid paidwin （赢）won won send sent sentmeet（遇见）met met shoot shot shotkeep （保持）kept kept tell told toldsleep（睡）slept slept win won wonsweep（扫）swept swept feel（感觉）felt feltsmell（闻）smelt/smelled smelt/ smelledleave（离开）left left build（建设）built builtlend（借出）lent lent send （传送）sent sentspend（花费）spent spent lose （丢失）lost lostburn （燃烧）burnt burnt learn（学习）learnt learntmean（意思是）meant meant catch（抓住）caught caughtteach（教）taught taught bring（带来）brought broughtfight （战斗）fought fought buy（买）bought boughtthink（想）thought thought hear （听见）heard heardsell（卖）sold sold tell（告诉）told toldsay（说）said said find（找到）found foundhave/has（有）had had make（制造）made madestand（站）stood stood understand明白understood understood (5) ABC型（动词原形、过去式与过去分词三者不同形）begin（开始）began begun take（取）took takendrink（喝）drank drunk mistake（弄错）mistook mistaken ring（铃响）rang rung ride（骑）rode riddensing （唱）sang sung do（做）did doneswim（游泳）swam swum write（写）wrote writtenblow（吹）blew blown go（去）went gonedraw （画）drew drawn lie（平躺）lay lainfly（飞）flew flown see（看见）saw seengrow（生长）grew grown wear （穿）wore wornknow（知道）knew known be ( am, is, are )（是）was, were been throw（投掷）threw thrown show（出示）showed shownbreak（打破）broke broken choose（选择）chose chosenforget（忘记）forgot forgotten (forgot) bear bore borne/bornspeak（说，讲）spoke spoken draw drew drawnwake（醒）woke woken dream dreamt/ dreamed dreamt/ dreamed drive（驾驶）drove driven hide hid hiddeneat（吃）ate eaten lay laid laid 放置fall（落下）fell fallen lie lied lied 撒谎give（给）gave given lie lay lain 躺rise（升高）rose risen see saw seenshake shook shaken steal stole stolencan----could may---might will---would shall---shouldmust----must。
