英语动词不规则变化时态是中学阶段的重点,也是难点
而与其息息相关的动词(尤其是不规则动词)的过去式、过去分词的变化散乱难记,令人头疼
可仔细琢磨就不难发现它们的变化有一定的规律可循
一、A-A-A 型
即原形、过去式和过去分词三者都相同(9 个)cost-cost-costcut-cut-cuthit-hit-hithurt-hurt-hurtlet-let-letput-put-putread-read-readset-set-setshut-shut-shut二、A-B-B 型
即过去式和过去分词相同(共 41 个)1•过去式和过去分词都含有-ought(3 个)bring-brought-broughtbuy-bought-boughtthink-thought-thought2•词尾有-ild,-end 时,只需把 d 变为 t(4 个)build-built-builtlend-lent-lentsend-sent-sentspend-spent-spent3•过去式、过去分词都含有-aught(2 个)catch-caught-caughtteach-taught-taught4•把-eep 变为-ept(3个)keep-kept-keptsleep-slept-sleptsweep-swept-swept5•把-ell 变为-old(2 个)tell-told-toldsell-sold-sold6•过去式、过去分词都含有-elt 或-ilt(4 个)smell-smelt-smeltspell-spelt-speltfeel-felt-feltspill-spilt-spilt7•过去式、过去分词都在原形词尾+t(3 个)learn-learnt-learntmean-meant-meantspoil-spoilt-spoilt8•过去式、过去分词词尾都是-