篇一:过去式与过去分词
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 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