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work---worked---worked
(2)以“ e ”结尾的动词，只在词尾加“ d ”。
live---lived---lived
(3)以“辅音字母 + y ”结尾的动词，将 "y" 变为 "i" ，再加“ ed ”。
study---studied---studied
(4)以重读闭音节结尾，先双写最后一个辅音字母，再加“ ed ”。
stop---stopped---stopped
move
live
写出下列动词的过去式和过去分词:
visit
repair
visited visited
repaired repaired
moved moved
lived lived
stop
plan
stopped stopped
planned planned
study
hurry
studied studied
hurried hurried
写出下列动词的过去式和过去分词:
be
keep
make
learn
was/were been