以辅音字母加 Y 结尾的单词变过去式study-studied try-tried copy-copied justufy-justifiedcry-cried carry-carried embody-embodied tidy-tidied empty-emptied hurry-hurried spy-spiedmarry-marriedworry-worriedsimplify-simplified双写词尾辅音字母加 edstop-stopped drop-dropped fit-fitted travel-travelled beg-begged rob-robbed pat-patted drip-dripped plan-planned hug-hugged特殊词的过去式eat-ate write-wrote sing-sang ride-rode swim-swam hurt-hurt wear-wore put-put come-came run-ran以辅音字母加 y 结尾的单词变比较级happy-happier easy-easierbuzy-buzier lazy-lazier crazy-crazierdirty-dirtier