不規(guī)則動(dòng)詞過(guò)去式和過(guò)去分詞改變規(guī)則表1:1、A—A—A型,即原形、過(guò)去式和過(guò)去分詞三者都相同。cost—cost—costcut—cut—cuthit—hit—hithurt—hurt—hurtlet—let—letput—put—putread—read—read2、A—B—B型,即過(guò)去式、過(guò)去分詞相同。1)過(guò)去式和過(guò)去分詞都含有-ought。bring—brought—broughtbuy—bought—boughtthink—thought—thoughtfight-fought-fought2)詞尾有-ild,-end時(shí),只需把d變?yōu)閠。build—built—builtlend—lent—lentsend—sent—sentspend—spent—spent3)過(guò)去式、過(guò)去分詞都含有-aught。catch—caught—caughtteach—taught—taught4)把-eep變?yōu)?ept。keep—kept—keptsleep—slept—sleptsweep—swept—swept5)把-ell變?yōu)?old。tell—told—toldsell—sold—sold6)過(guò)去式、過(guò)去分詞都含有-elt或-ilt。smell—smelt—smeltspell—spelt—speltfeel—felt—felt7)過(guò)去式、過(guò)去分詞都在原形詞尾加t。learn—learnt—learntmean—meant—meant8)過(guò)去式、過(guò)去分詞詞尾去y變-id。say—said—saidpay—paid—paidlay—laid—laidhear—heard—heard9)改變?cè)糇帜浮eet—met—metget—got—gotsit—sat—satfind—found—foundhold—held—heldshine—shone—shonewin—won—wonhang—hung—hunglose—lost—lost10)改變輔音字母。make—made—made11)改變?cè)⑤o音字母。leave—left—leftstand—stood—stoodhave(has)—had—hadunderstand—understood—understood3、A—B—C型,即原形、過(guò)去式、過(guò)去分詞都不相同。1)原形、過(guò)去式和過(guò)去分詞都不相同。be—was—beendo—did—donefly—flew—flowngo—went—gonelie—lay—lainshow—showed—shownwear—wore—worn2)詞尾為-ow,-aw時(shí),過(guò)去式將其變?yōu)?ew,過(guò)去分詞在其原形后加n。blow—blew—blowndraw—drew—drawngrow—grew—grownknow—knew—knownthrow—threw—thrown（show除外）3)詞尾為“i＋輔（1個(gè)）＋e”,過(guò)去式將i變?yōu)閛,過(guò)去分詞多在原形后加n,若那個(gè)輔音字母為d或t,須雙寫(xiě)d或t后加n。（give,hide除外）drive—drove—drivenwrite—wrote—writtenride—rode—riddenrise—rose—risenarise—arose—arisen4)過(guò)去分詞在過(guò)去式后加（e）n。break—broke—brokenchoose—chose—chosenfreeze—froze—frozenspeak—spoke—spokenwake—woke—woken5)過(guò)去分詞由過(guò)去式加-ten組成。forget—forgot—forgotten6)過(guò)去分詞由原形加（e）n組成。be—was（were）—beeneat—ate—eatenfall—fell—fallengive—gave—givensee—saw—seenhide—hid—hidden（hid）7)詞尾為-ake時(shí),過(guò)去式將其變?yōu)?ook,過(guò)去分詞在原形詞后加-n。take—took—takenmistake—mistook—mistaken8)i—a—u改變。begin—began—begundrink—drank—drunksing—sang—sungring—rang—rungswim—swam—swumsink—sank—sunk4、A—B—A型,即過(guò)去分詞和原形相同。come—came—comebecome—became—becomerun—ran—run5、情態(tài)動(dòng)詞型,只有原形和過(guò)去式,沒(méi)有過(guò)去分詞。can—couldmay—mightwill—wouldshall—should不規(guī)則動(dòng)詞過(guò)去分詞改變規(guī)則表2:(1)AAA型（動(dòng)詞原形、過(guò)去式、過(guò)去分詞同形）cost（花費(fèi)）costcostcut（割）cutcuthit（打）hithithurt傷害）hurthurtlet（讓?zhuān)﹍etletput（放）putputread（讀）readread(2)AAB型（動(dòng)詞原形與過(guò)去式同形）beat（跳動(dòng)）beatbeaten(3)ABA型（動(dòng)詞原形與過(guò)去分詞同形）become（變成）becamebecomecome（來(lái)）camecomerun（跑）ranrun(4)ABB型（過(guò)去式與過(guò)去分詞同形）dig（挖）dugdugget（得到）gotgothang（吊死）hangedhangedhang（懸掛）hunghunghold（抓住）heldheldshine（照耀）shoneshonesit（坐）satsatwin（贏）wonwonmeet（遇見(jiàn)）metmetkeep（保持）keptkeptsleep（睡）sleptsleptsweep（掃）sweptsweptfeel（感覺(jué)）feltfeltsmell（聞）smeltsmeltleave（離開(kāi)）leftleftbuild（建設(shè)）builtbuiltlend（借出）lentlentsend（傳送)sentsentspend（花費(fèi)）spentspentlose（丟失）lostlostburn（燃燒）burntburntlearn（學(xué)習(xí)）learntlearntmean（意思是）meantmeantcatch（抓住）caughtcaughtteach（教）taughttaughtbring（帶來(lái)）broughtbroughtfight（戰(zhàn)斗）foughtfoughtbuy（買(mǎi)）boughtboughtthink（想）thoughtthoughthear（聽(tīng)見(jiàn)）heardheardsell（賣(mài)）soldsoldtell（告訴）toldtoldsay（說(shuō)）saidsaidfind（找到）foundfoundhave/has（有）hadhadmake（制造）mademadestand（站）stoodstoodunderstand明白u(yù)nderstoodunderstood(5)ABC型（動(dòng)詞原形、過(guò)去式與過(guò)去分詞三者不一樣形）begin（開(kāi)始）beganbegundrink（喝）drankdrunkring（鈴響）rangrungsing（唱）sangsungswim（游泳）swamswumblow（吹）blewblowndraw（畫(huà)）drewdrawnfly（飛）flewflowngrow（生長(zhǎng)）grewgrownknow（知道）knewknownthrow（投擲）threwthrownshow（出示）showedshownbreak（打破）brokebrokenchoose（選擇）chosechosenforget（忘記）forgotforgotten(forgot)speak（說(shuō),講）spokespokenwake（醒）wokewokedrive（駕駛）drovedriveneat（吃）ateeatenfall（落下）fellfallengive（給）gavegivenrise（升高）roserisentake（取）tooktakenmistake（弄錯(cuò)）mistookmistakenride（騎）roder