be was/were beenbear bore bornebeat beat beaten, beatbecome became becomebegin began begunbend bent bentbet bet betbind bound boundbite bit bittenbleed bled bledblow blew blownbreak broke brokenbring brought broughtbuild built builtburn burned, burnt burned, burnt burst burst burstbuy bought boughtcast cast castcatch caught caughtchoose chose chosencome came comeshow showed shown, showed shut shut shutsing sang sungsink sank, sunk sunksit sat satsleep slept sleptsow sowed sown, sowed speak spoke spokenspread spread spreadstand stood stoodsteal stole stolenstick stuck stuckswear swore swornswim swam swumtake took takenteach taught taughttear tore torntell told toldthink thought thoughtthrow threw thrownunderstand understood understood undertake undertook undertaken upset upset upsetwake woke, waked woken, waked wear wore wornwin won wonwrite wrote writtencost cost costcut cut cutdeal dealt dealtdig dug dugdo did donedraw drew drawndrink drank drunkdrive drove driveneat ate eatenfall fell fallenfeed fed fedfeel felt feltfight fought foughtfind found foundfly flew flownforbid forbade forbiddenforecast forecast forecastforget forgot forgottenforgive forgave forgivenfreeze froze frozenget got gotgive gave givengo went gonegrow grew grownhang hanged, hung hanged, hung have had hadhear heard heardhide hid hiddenhit hit hithold held heldhurt hurt hurtkeep kept keptknow knew knownlay laid laidlead led ledleave left leftlend lent lentlet let letlie lay lainlight lit, lighted lit, lightedlose lost lostmake made made动词过去式和过去分词法则（一）、不规则动词过去式和过去分词动词的过去式和过去分词是初中英语教学中的重点，而有些动词的不规则变化是这些重点中的难点，但这些不规则变化也不是毫无规律可循的。
现将初中英语中一些常用的不规则动词变化介绍如下。
一、原形、过去式和过去分词的词形和读音都相同的单词，结尾字母一般是t或d。
如：cut-cut-cut, hit-hit-hit, put-put-put, cost-cost-cost, let-let-let, shut-shut-shut, set-set -set, hurt-hurt-hurt, spread-spread-spread特殊：动词read的过去式和过去分词虽然词形与原形一致，read-read-read，但发音分别是[ri:d]-[red]-[red]。
二、有些动词的过去分词与原形是一样的。
如：come-came-come, become-became-become, run-ran-run, overcome-overcame-overc ome三、有些动词的过去式和过去分词相同。
如：1. 把单词结尾的字母d改为t。
如：lend-lent-lent, spend-spent-spent, send-sent-sent2. 改变单词中间元音字母。
如：sit-sat-sat, win-won-won, shine-shone-shone, hold-held-held3. 以eep结尾的动词，把eep改为ept。
如：keep-kept-kept, sleep-slept-slept, sweep-swept-swept4. 过去式和过去分词都以augh或ough结尾的动词。
如：buy-bought-bought, fight-fought-fought, think-thought-thought, bring-brought-broug ht, teach-taught-taught, catch-caught-caught5. 有的以ay结尾的动词，在过去式和过去分词中把ay变成aid。
如：say-said-said, lay-laid-laid, pay-paid-paid6. 另有一些其它形式的变化。
如：have-had-had, learn-learnt-learnt, leave-left-left, lose-lost-lost, make-made-made, m eet-met-met, feel-felt-felt四、有些动词原形中含有字母i，在过去式中变i为a，在过去分词中变i为u。
如：五、以字母ow或aw结尾的动词，在变成过去式时，通常把元音字母变成e，在变成过去分词时，通常只在词尾加n。
如：blow- blew- blown, draw-drew-drawn, grow-grew-grown, throw-threw-thrown, kno w-knew-known六、有些动词的过去分词是在原形词尾加n或en，变成以en结尾的单词。
如：rise-rose-risen, give-gave-given, take-took-taken, fall-fell-fallen, drive-drove-driven, eat-ate-eaten特殊：write-wrote-written, speak-spoke-spoken, ride-rode-ridden, get-got-gotten （二）、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。
1) 规则变化情况例词读音与说明动词原形过去式过去分词一般在动词原形后加-ed lookcallopenneed lookedcalledopenedneeded looked [lukt]called [kC:ld]opened [5EupEnd]needed [ni:did] ①-ed在清辅音音素后发音为〔t〕，在浊辅音后发音为〔d〕，在元音后发音也为[d]②-ed在〔t]、〔d〕后发音为[id]③但fix的过去式和过去赞分词x不双写，为fixed.以-e结尾的动词加-d movephonehopeagree movedphonedhopedagreed moved [mu:vd]phoned [fEund]hoped [hEupt]agreed [E5^ri:d]以辅音字母加y结尾的动词，变y为i，再加-ed studycarrytry studiedstudiedcarried studied [5stQdid]carried [5kArid]tried [traid]以原音字母加y结尾的词，直接加-ed playenjoystay playedenjoyedstayed played [pleid]enjoyed [in5dVCid]stayed [steid]末尾只有一个辅音字母的重读闭音节词，双写该辅音字母，再加-ed stopfit stoppedplannedfitted stopped [stCpt]planned [plAnd]fitted [5fitid]以-r音节结尾的词，双写r字母，再加-ed preferrefer preferredreferred preferred [prI`f:d]referred [ri5fE:]2) 不规则变化英语中有些动词的过去式和过去分词形式变化不规则，可分为五种情况。
1．动词原形、过去式和过去分词完全同形。
例：原形过去式过去分词cut（切）hit（打）cast（扔）hurt（伤害）put（放）let（让）shut（关）cost（花费）set（放）rid（清除）cuthitcasthurtputletshutcostsetrid cuthitcastputletshutcostsetrid2．过去式与过去分词完全同形。
例：原形过去式过去分词find（找到）pay（支付）leave（离开）lend（借出）meet（遇见）keep（保持）lose（丢失）teach（教）sit（坐）lead（引导）win（赢）除）foundpaidleftlentmetkeptlosttaughtsatledwon foundpaidleftlentmetkeptlostsatledwon3．动词原形与过去分词同形例：原形过去式过去分词come（来）run（跑）become（成为）cameranbecame comerunbecome4．动词原形、过去式、过去分词形式完全不同。
例：原形过去式过去分词give（给）fly（飞）drink（喝）see（看见）go（去）know（知道）wear（穿）speak（说）gaveflewdranksawwentknewworespoke givenflowndrunkseengoneknownwornspoken5．过去式和过去分词有两种形式例：原形过去式过去分词burn（燃烧）burnedburnt burnedburntlearn（学习）learnedlearnt learnedlearntsmell（闻）smelledsmelt smelledsmeltspell （拼写）spelledspelt spelledspeltshine （照射）shinedshone shinedshoneleap （跳）leapedleapt leapedleapt提示a. beat的过去式与原形同形：比：beat（打击）beat（过去式）beaten（过去分词）b. lie有规则变化和不规则变化两种，含义不同比：lie lied, lied（说谎）lay, lain（躺，位于）c. hang 有规则变化和不规则变化两种，含义不同比：hang hanged, hanged（处绞刑）hung, hung(挂，吊)d. welcome（欢迎）一词是规则动词，不可误用为不规则动词比：welcome welcomed, welcomed（正）welcome, welcome（误）e.不要将不规则动词误用为规则动词比：hit（打）hit, hit（正）hitted, hitted（误）6 现在分词的变化规则规则动词原形现在分词及发音一般在动词原形词尾加-ing，-ing发音为[iN] gopushplaycarry going [5^EuiN]pushing [5puFiN]playing [pleiiN]carrying [5kAriiN]以不发音的e结尾的动词，先去掉e,再加-ing takewriteleave taking [5teikiN]writing [5raitiN]leaving [5li:viN]重读闭音节结尾的动词，如果词尾只有一个辅音字母，要将该末尾只有一个辅音字母的重读闭音节词，双写该辅音字母，再加-ed stopstopfitbeginforget cutting [5kQtiN]stopping [5stCpiN]fitting [5fitiN]beginning [bi5^iniN]forgetting [fE5^etiN]以ie结尾的动词，要把ie改为y，再加-ing liedietie lying [5laiiN]dying [5daiiN]tying [5taiiN（三）、不规则动词过去式和过去分词归纳A. 原形与过去式和过去分词完全相同.cost----cost----cost cut----cut----cut put----put----putlet----let----let set----set----set hit----hit----hitshut----shut----shut hurt---hurt----hurt read---read----read 读音/e/lie---lied---lied 说谎lay---laid---laid 放置，下蛋lay--- lain 躺下，位于，平放eg. The hens don’t _______eggs during such cold weather.She _____ her books on the table. ____B. 过去式与过去分词完全相同1. 过去式和过去分词中含有ought, aught, 读音是〔:t〕bright----brought----brought think----thought----thought buy----bought----bought catch----caught----caught teach ---- taught ----taught2. 动词原形中的e为o，变成过去式和过去分词。