1 / 1 0 不规则动词得过去式与过去分词变化规则表1: 1、A—A—A 型,即原形、过去式与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)过去式与过去分词都含有ought
bring—brought—brought buy—bought—bought think—thought—thought fightfought 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
2 / 1 0 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 hear—heard—heard 3 / 1 0 9)改变元音字母
meet—met—met get—got—got sit—sat