一般过去式构成：表示一般过去式的动词通常用动词的过去式形式来表示,而动词的过去式是在动词原形的基础上变化的.动词的过去式可分为规则动词和不规则动词.规则动词的过去式变化如下：
一般情况下,动词词尾加 -ed .
worked played wanted acted
以不发音的 -e 结尾动词,动词词尾加 -d.
lived moved decided declined hoped judged raised wiped
以辅音字母 + y结尾的动词,把-y变为-i 再加-ed.
studied tried copied justified cried carried embodied emptied
以一个辅音字母结尾的重读闭音节动词,双写词尾辅音字母,再加 -ed.
stopped begged fretted dragged dropped planned dotted dripped
不规则动词的过去式变化规律性不强,须多加记忆.
go - went make - made get - got
buy - bought come - came fly-flew