一般过去时动词变化

1．直接加ed：work—— worked look——looked

2．以不发音e结尾的单词，直接加d：live ——lived hope——hoped use——used

3．以辅音字母+y结尾的，变y为i加ed：study—— studied carry——carried worry——worried

4．以一个辅音字母结尾的，双写最后的辅音字母+ed：stop—— stopped plan——planned

重读闭音节体现形式为辅-元-辅结构，例如nod,n为辅音，o为元音，d为辅音。

5. 以ic结尾的动词，要把ic变成ick再加ed，如picnic→picnicked，traffic→trafficked

6．不规则变化的动词过去式：

have---had are---were get---got say---said feel---felt do/does---did is---was go---went

drink--drank eat--ate bring----brought think----thought buy----bought catch---- caught teach ---- taught sit----sat wear----wore cut----cut sweep----swept sleep——slept see----saw become----became^[1] read——read