95.动词过去式变化规则
动词过去式有规则变化和不规则变化。
(1)规则变化
变化规则 动词原形 动词过去式
work worked
help helped
一般情况, water watered
在词尾加一ed play played
jump jumped
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live lived
以不发音的字母 hope hoped
—e结尾的动词, close closed
词尾加—d use used
dance danced
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以“辅音字母+y” try tried
结尾的动词, study studied
先改y为i, worry worried
再加—ed carry carried
cry cried
—————————————————————以单个辅音字母结尾的 stop stopped
重度闭音节动词,双写 nod nodded
这个辅音字母, 再加—ed plan planned
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