动词过去式变化规则
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
sweep-swept keep—kept sleep-slept
speak-spoke break—broke
tell—told sell—sold
find的过去式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
三、动词过去式构成读音
1、 清辅音后读清辅音[t] (清读清) 如:jump like
2、 浊辅音后读浊辅音[d] (浊读浊) 如:listen pull
3、 元音后面读浊辅音[d] (元音后面读浊音) 如:water play
4、 [t][d]后面读[id] want need
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