AAA 型 即原形、过去式和过去分词三者都相同
(共9 个) cost—cost—cost cut—cut—cut hit—hit—hit hurt—hurt—hurt let—let—let put—put—put read—read—read(read 的原形和过去式、过去分词 读音不同[2] ) set-set-set shut-shut-shut ABB 型 过去式、过去分词相同
(共42 个) 1.过去式和过去分词都含有 -ought
(4 个) 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
(4 个) 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 个) catch—caught—caught teach—taught—taught 4.把-eep、-eel 变为-ept、-elt
(4 个) keep—kept—kept sleep—slept—slept sweep— swept—swept feel—felt— felt 5.把-ell 变为-old
(2 个) tell—told—told sell—sold—sold 6.把-ell、-ill 变为-elt 或-ilt
(3 个) smell—smelt—smelt spell—spelt—spelt spill—spilt—spilt 7.把-eed、-ead、-eet 变为-ed 或-et
(4 个) feed—fed—fed lead—led—led speed—sped—sped meet—