常用动词的过去式过去分词1. A-A-A型cost cost cost 花费 cut cut cut 割,切 hit hit hit 打 let let let 让 put put put 放下 read read read 读 hurt hurt hurt 伤 set set set 释放upset upset upset 使沮丧rid rid rid 使摆脱shut shut shut 关上 broadcast broadcast broadcast 广播2. A-A-B型beat beat beaten 打 3. A-B-A型 come came come 来 become became become 变 run ran run 跑 4. A -B -B型 (1)+n/tburn burnt burnt 燃烧 dream dreamed dreamed 梦想dream dreamt dreamt learn learned learned