大体的规则变化:
1、一般在词尾加ed ,如 open – opened
2、以不发音字母e结尾,只加d ,如 close- closed
3、以辅音字母加y 结尾的词,改y为i再加ed,如 carry- carried
4、以重读闭音节结尾且只有一个辅音字母,先双写这个辅音字母再加ed,如 stop – stopped
不规则变化:要熟记动词过去式不规则变化表

细分是这样分的:

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

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

sweep—swept keep—kept sleep—slept

speak—spoke break—broke

tell—told sell—sold

buy—bought think—thought catch—caught teach—taught build—built

can—could shall—should will—would

过去式与动词原形一样:let—let must—must put—put read—read

 

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