动词过去式变化规则
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【过去式的变化规则】

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.

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, go-went, eat-ate,

swim-swam, buy-bought, see-saw,

teach-taught, bring-brought, think-thought,

fall-fell, hurt-hurt, break-broke, win-won,

lose-lost