动词的过去式和过去分词的不规则变化

A-A-A型，原形、过去式、过去分词相同

cost—cost—cost 花费；

cut—cut—cut 切，割；

hit—hit—hit 打；

hurt—hurt—hurt伤害；

let—let—let 让；

put—put—put放

A—B—B型，过去式、过去分词相同

bring—brought—brought 带来

buy—bought—bought 买

think—thought—thought 想

fight-fought-fought 打架

catch—caught—caught 抓住

teach—taught—taught 教

build—built—built 建造

A—A-- B型动词原形、过去式同形

beat beat beaten 跳动

A—B—A型过去分词、原形相同

come—came—come 来

become—became—become 成为

run—ran—run 跑

A-B-C型原形过去式过去分词不同

begin began begun开始

drink drank drunk 喝

ring rang rung 铃响

sing sang sung 唱歌

swim swam swum 游泳