动词原形（现在式） 过去式 过去分词 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 2. A---A---B型（现在式和过去式同形） beat beat beaten 打 3. A---B---A型（现在式和过去分词同形） come came come 来 become became become 变 run ran run 跑 4. A ---B ---B型 ...
