不规则动词1
A-A-A 型(无变化的动词)cut-cut-cut let-let-let hit-hit-hit put-put-put cost-cost-cost hurt-hurt-hurt read/rid/-read[red]-read[red]2
A-A-B 型(现在式和过去式同形)beat-beat-beaten3
A-B-A 型(现在式和过去分词同形)come-came-comebecome-became-becomerun-ran-run4
A-B-B 型(动词的过去式与过去分词相同)(1)词尾的“d”变为“t”或词尾是“n”加“t”build-built-built lend-lent-lent send-sent-sent spend-spent-spentburn-burnt/burned-burnt/burned learn-learnt/learned-learnt/learnedmean-meant-meant(2)把原形变为 aught 及 ought 的变化(如果原形有 a 则是 aught,无 a 则是 ought)buy-bought-bought bring-brought-brought think-thought-thoughtfight-fought-fought catch-caught-caught teach-taught-taught(3)eep 变 ept 或过去式、过去分词含有/e/音的动词keep-kept-kept sleep-slept-slept sweep-swept-swept leave-left-leftsay-said-said meet-met-met spell-spelt-speltsmell-smelt/smelled-smelt/smelled hold-held-held feel-