爱华网动词过去式和过去分词变化规则：
1. 一般情况下，动词词尾加-ed, 如：work- want- play- ask-
2. 以不发音的-e结尾的动词，动词词尾加-d, 如：live- move- taste-
3. 以辅音字母加-y结尾的动词，变y为i, 再加-ed, 如：study- try- copy-
4. 重度闭音节动词，双写词尾辅音字母，再加-ed, 如：stop- permit- 特例：
以-l结尾的动词，尾音节重读时，双写l, 如：control-controlled, 尾音节不重读时，双不双写都可以，如：travel-traveled(美)/travelled(英) 5. 不规则动词变化
⑴以t结尾，过去式与原形相同。如：put, let, cut, beat, must
⑵以d结尾，变d为t, 如：build-built, lend-lent, spend-spent, send-sent ⑶以n结尾，在词后加t, 如：mean-meant, burn-burnt, learn-learnt
⑷以ow/aw结尾，把ow/aw变为ew，如：blow-blew, draw-drew, know-knew, grow-grew, throw-threw(show除外，show-showed)
⑸含有双写字母的，将双写改为单写，在词尾加-t, 如：keep-kept, sleep-slept, feel-felt, smell-smelt, sweep-swept
⑹含有元音字母o/i 的词，将o/i变成a, 如：come-came, become-became, sing-sang, give-gave, sit-sat, drink-drank
⑺把重度开音节中的i改为o, 变成过去式，如：drive-drove, ride-rode, write-wrote ⑻动词原形中的e改为o, 变成过去式，如：get-got, forget-forgot ⑼动词原形中的ee改为e, 如：feed-fed, meet-met
⑽动词原形中的eak改为oke, 如：break-broke, speak-spoke ⑾动词原形中的ell改为old, 如：sell-sold, tell-told
⑿动词原形中的an改为oo, 如：stand-stood, understand-understood
⒀在动词原形后加d或t变成过去式，并且发生音变，如：hear-heard, say-said, mean-meant
⒁不符合上述规律的动词过去式，如：
am, is –was, are-were, bring-brought, buy-bought, think-thought, catch-caught, teach-taught, can-could, shall-should, will-would, do-did, eat-ate, fall-fell, find-found, wind-wound, fly-flew, go-went, have/has-had, hold-held, leave-left, make-made, may-might, run-ran, see-saw, take-took
不规则动词的变化因词而异。但如对不规则动词的过去式和过去分词做一分析，就可发现其中的“规则”。为方便记忆，现将部分不规则动词的原形、过去式和过去分词列出并规为五种类型。以便准确记忆。 AAB型
ABC 型
AAA型
ABA型
ABB型
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