动词过去式-ed变形规律

①一般情况下，在动词原形后直接加ed。如：wanted，played。

②以不发音的字母e结尾的动词，直接加d。如：hoped，lived。

③重读闭音节单词需双写最后一个辅音字母，再加ed。如：stopped, shipped, shopped

◆重读闭音节结构：

单词末三位字母为：辅音+元音+辅音，并且这个音节在单词中为重读音节。

◆注：有些单词虽然符合这个结构但是有特殊形式不符合此规则。

④以辅音字母+y结尾的动词变y为i，再加ed。如：studied，worried。

◆⑤有些动词不符合上面的规则，需要特殊记忆。如：

am(is)-was, are-were, become - became buy- bought

go - went, do-did come – came drink- drank

eat - ate, feel- felt get- got give- gave

go - went have- had know- knew leave- left

make - made meet- met pay- paid read/ri:d /- read /red/

ride - rode run- ran say- said swim-swam,

see- saw, sell- sold sing- sang sleep- slept

speak- spoke take- took teach-taught, bring-brought,

think- thought, fall-fell, hurt-hurt, break-broke,

win- won, lose-lost wear- wore write- wrote

sell- sold

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