以辅音字母加Y结尾的单词变过去式study-----studied

try------tried

copy------copied

justufy----justified

cry----cried

carry-----carried

embody-----embodied

tidy-tidied

empty----emptied hurry----hurried

spy----spied

marry-married

worry-worried

simplify-simplified

双写词尾辅音字母加ed

stop-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----easier

buzy----buzier

lazy----lazier crazy----crazier

dirty----dirtier