(1)一般情况下,动词词尾加ed,如:worked played wanted acted
(2)以不发音的e结尾动词,动词词尾加d,如:lived moved decided declined hoped judged raised wiped
(3)以辅音字母+y结尾的动词,把y变为i再加ed,如:studied tried copied justified cried carried embodied emptied
(4)以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加ed,如:stopped begged fretted dragged dropped planned dotted dripped