不规则动词的过去式和过去分词变化规则表1：1、AAA型，即原形、过去式和过去分词三者都同样。costcostcostcutcutcuthithithithurthurthurtletletletputputputreadreadread2、ABB型，即过去式、过去分词同样。1) 过去式和过去分词都含有-ought。bringbroughtbroughtbuyboughtboughtthinkthoughtthoughtfight-fought-fought2) 词尾有-ild，-end时，只需把d变为t。buildbuiltbuiltlendlentlentsendsentsentspendspentspent3) 过去式、过去分词都含有-aught。catchcaughtcaughtteachtaughttaught4) 把-eep变为-ept。keepkeptkeptsleepsleptsleptsweepsweptswept5) 把-ell变为-old。telltoldtoldsellsoldsold6) 过去式、过去分词都含有-elt或-ilt。smellsmeltsmeltspellspeltspeltfeelfeltfelt7) 过去式、过去分词都在原形词尾加t。learnlearntlearntmeanmeantmeant8) 过去式、过去分词词尾去y变-id。saysaidsaidpaypaidpaidlaylaidlaidhearheardheard9) 改变元音字母。meetmetmetgetgotgotsitsatsatfindfoundfoundholdheldheldshineshoneshonewinwonwonhanghunghungloselostlost10) 改变辅音字母。makemademade11) 改变元、辅音字母。leaveleftleftstandstoodstoodhave(has)hadhadunderstandunderstoodunderstood3、ABC型，即原形、过去式、过去分词都不同样。1) 原形、过去式和过去分词都不同样。bewasbeendodiddoneflyflewflowngowentgonelielaylainshowshowedshownwearworeworn2) 词尾为-ow，-aw时，过去式将其变为-ew，过去分词在其原形后加n。blowblewblowndrawdrewdrawngrowgrewgrownknowknewknownthrowthrewthrown（show除外）3) 词尾为“i辅（1个）e”，过去式将i变为o，过去分词多在原形后加n，若那个辅音字母为d或t，须双写d或t后加n。（give，hide除外）drivedrovedrivenwritewrotewrittenrideroderiddenriseroserisenarisearosearisen4) 过去分词在过去式后加（e）n。breakbrokebrokenchoosechosechosenfreezefrozefrozenspeakspokespokenwakewokewoken5) 过去分词由过去式加-ten构成。forgetforgotforgotten6) 过去分词由原形加（e）n构成。bewas（were）beeneatateeatenfallfellfallengivegavegivenseesawseenhidehidhidden（hid）7) 词尾为-ake时，过去式将其变为-ook，过去分词在原形词后加-n。taketooktakenmistakemistookmistaken8)iau变化。beginbeganbegundrinkdrankdrunksingsangsungringrangrungswimswamswumsinksanksunk4、ABA型，即过去分词和原形同样。comecamecomebecomebecamebecomerunranrun5、神态动词型，只有原形和过去式，没有过去分词。cancouldmaymightwillwouldshallshould不规则动词的过去分词变化规则表2：(1) AAA型（动词原形、过去式、过去分词同形）cost（花销）costcostcut（割）cutcuthit（打）hithithurt损害）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（变为）becamebecomecome（来）camecomerun（跑）ranrun(4) ABB型（过去式与过去分词同形）dig（挖）dugdugget（获得）gotgothang（吊死）hangedhangedhang（悬挂）hunghunghold（抓住）heldheldshine（照射）shoneshonesit（坐）satsatwin（赢）wonwonmeet（遇到）metmetkeep（保持）keptkeptsleep（睡）sleptsleptsweep（扫）sweptsweptfeel（感觉）feltfeltsmell（闻）smeltsmeltleave（走开）leftleftbuild（建设）builtbuiltlend（借出）lentlentsend（传递)sentsentspend（花销）spentspentlose（扔掉）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理解understoodunderstood(5) ABC型（动词原形、过去式与过去分词三者不一样形）begin（开始）beganbegundrink（喝）drankdrunkring（铃响）rangrungsing（唱）sangsungswim（游泳）swamswumblow（吹）blewblowndraw（画）drewdrawnfly（飞）flewflowngrow（生长）grewgrownknow（知道）knewknownthrow（扔掷）threwthrownshow（出示）showedshownbreak（打破）brokebrokenchoose（选择）chosechosenforget（忘掉）forgotforgotten(forgot)speak（说，讲）spokespokenwake（醒）wokewokedrive（驾驶）drovedriveneat（吃）ateeatenfall（落下）fellfallengive（给）gavegivenrise（高升）roserisentake（取）tooktakenmistake（弄错）mistookmistakenride（骑）roderiddenwrite（写）wrotewrittendo（做）diddonego（去）wentgonelie（平躺）laylainsee（看见）sawseenwear（穿）worewornbe(am,is,are)（是）was,werebeen内容总结（1）不规则动词的过去式和过去分词变化规则表1：1、AAA型，即原形、过去式和过去分词三者都同样（2）不规则动词的过去式和过去分词变化规则表1：1、AAA型，即原形、过去式和过去分词三者都同样（3）过去式和过去分词都含有-ought