即原形、过去式和过去分词三者都相同。(共9个)cost—cost—costcut—cut—cuthit—hit—hithurt—hurt—hurtlet—let—letput—put—putread—read—read(read的原形和过去式、过去分词读音不同)set-set-setshut-shut-shut过去式、过去分词相同。(共42个)过去式和过去分词都含有 -ought。(4个)bring—brought—broughtbuy—bought—boughtthink—thought—thoughtfight—fought—fought词尾有-ild,-end时,只需把d变为t。(4个)build—built—builtlend—lent— lentsend—sent—sentspend—spent— spent过去式、过去分词都含有 -aught。(2个)catch—caught—caughtteach—taught—taught把-eep、-eel变为-ept、-elt。(4个)keep—kept—keptsleep—slept—sleptsweep— swept—sweptfeel—felt— felt把-ell变为-old。(2个)tell—told—toldsell—sold—sold把-ell、-ill变为-elt或-ilt。(3个)smell—smelt—smeltspell—spelt—speltspill—spilt—spilt把-eed、-ead、-eet变为-ed或-et。(4个)feed—fed—fedlead—led—ledspeed—sped—spedmeet—met—met过去式、过去分词都在原形词尾加t。(6个)learn—learnt—learntmean—meant—meantspoil—spoilt—spoiltburn—burnt—burntdream—dreamt—dreamtdeal—dealt—dealt过去式、过去分词词尾去y变-id(4个)say—said—saidpay—paid—paidlay—laid—laidhear—heard—heard改变元音字母。(12个)meet—met—metfeed—fed—fedget—got—gotsit—sat—satfind—found—foundhold—held—heldspit—spat—spatshine—shone—shonewin—won—wonhang—hung—hungdig— dug—duglose—lost—lost改变辅音字母。(4个)make—made—madebuild—built—builtsend—sent—sentspend—spent—spent改变元、辅音字母。(4个)leave—left—leftstand—stood—stoodhave/has—had—hadunderstand—understood—understood原形、过去式、过去分词都不相同。(共39个)i—a—u变化。(7个)begin—began—begundrink—drank—drunksing— sang—sungring—rang—rungswim—swam—swumsink— sank—sunkspring—sprang—sprung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。(5个)blow—blew—blowndraw—drew—drawngrow— grew—grownknow—knew—knownthrow—threw—thrown(show除外)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。(4个)(give,hide除外)drive—drove—drivenwrite—wrote—writtenride— rode—riddenrise—rose—risen过去分词在过去式后加n。(3个)wake—woke—wokenspeak-spoke-spokensteal-stole-stolen过去分词由过去式加-ten构成。(2个)get-got-gotten/gotforget—forgot—forgotten过去分词由原形加(e)n构成。(6个)be—was(were)—beeneat—ate—eatenfall—fell—fallengive—gave—givensee—saw—seenhide—hid—hidden(hid)词尾为-ake时,过去式将其变为-ook,过去分词在原形词后加-n。(2个)take—took—takenmistake—mistook—mistaken原形、过去式和过去分词都不相同。(6个)do—did—donefly—flew—flowngo—went—gonelie—lay—lainshow—showed—shownwear—wore—worn词尾为-eak时,过去式将其变为-oke,过去分词在过去式后加-n。(2个)break—broke—brokenspeak—spoke—spoken词中间为“oo+辅(1个)+e”或“ee+辅(1个)+e”,过去式将oo、ee变为o,过去分词在过去式后加-n。(2个)choose—chose—chosenfreeze—froze—frozen过去式和原形相同。(1个)beat—beat—beaten过去分词和原形相同。(共3个)词中间为“o+辅+e”时,过去式将o变为a。(2个)come—came—comebecome—became—becomei—a—u变化。(4个)begin—began—begundrink—drank—drunksing—sang—sungswim—swam—swum(除must)只有原形和过去式,没有过去分词。(共4个)can—couldmay—mightwill—wouldshall—shouldmust 既没有过去式也没有过去分词。