1/6 不规则动词的过去式和过去分词变化规则表1 : 1、A—A—A 型,即原形、过去式和过去分词三者都相同。 cost—cost—cost cut—cut—cut hit—hit—hit hurt—hurt—hurt let—let—let put—put—put read—read—read 2、A—B—B 型,即过去式、过去分词相同。 1) 过去式和过去分词都含有 -ought。 bring—brought—brought buy—bought—bought think—thought—thought fight-fought-fought 2) 词尾有-ild,-end 时,只需把 d 变为 t。 build—built—built lend—lent— lent send—sent—sent spend—spent— spent 3) 过去式、过去分词都含有 -aught。 catch—caught—caught teach—taught—taught 4) 把-eep 变为-ept。 keep—kept—kept sleep—slept—slept sweep— swept—swept 5) 把-ell 变为-old。 tell—told—told sell—sold—sold 6) 过去式、过去分词都含有-elt 或-ilt。 smell—smelt—smelt spell—spelt—spelt feel—felt—felt 7) 过去式、过去分词都在原形词尾加 t。 learn—learnt—learnt mean—meant—meant 8) 过去式、过去分词词尾去y变-id。 say—said—said pay—paid—paid lay—laid—laid 2/6 hear—heard—heard 9) 改变元音字母。 meet—met—met get—got—got sit—sat—sat find—found—found hold—held—held shine—shone—shone win—won—won hang—hung—hung lose—lost—lost 10) 改变辅音字母。 make—made—made 11) 改变元、辅音字母。 leave—left—left stand—stood—stood have(has)—had—had understand—understood—understood 3、A—B—C 型,即原形、过去式、过去分词都不相同。 1)原形、过去式和过去分词都不相同。 be—was—been do—did—done fly—flew—flown go—went—gone lie—lay—lain show—showed—shown wear—wore—worn 2)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。 blow—blew—blown draw—drew—drawn grow— grew—grown know—knew—known throw—threw—thrown(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) drive—drove—driven write—wrote—written ride—rode—ridden 3/6 ri...