一、规则变化
1、 一般情况下，动词词尾加-ed, 如：work—worked play—played want—wanted ask—asked talk—talked
2、 以不发音的-e结尾动词，动词词尾加-d, 如：live—lived move—moved taste—tasted
3、 以“辅音字母 y”结尾的动词，把y改成i, 加—ed, 如：study—studies try—tried copy—copied carry—carried
4、 重读闭音节动词，双写词尾辅音字母，再加—ed, 如：stop—stopped
二、不规则变化
is am—was are—were do—did have has—had go—went meet—met come—came take—took steal—stole eat—ate fly—fliew run—ran see—saw say—said make—made find—found stand—stood
sit—sat sing—sang drink—drank give—gave ring—rang swim—swam
write—wrote ride—rode drive—drove
draw—drew grow—grew know—knew
get—got forget—forgot
,
