1、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。1、 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-shut2、 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-br
2、oughtbuy-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-so
3、ld-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-d（4个）say-said-saidpay-paid-paidlay-laid-laidhear-heard-heard9. 改变元音字母（11个）meet-met-metget-got-gotsit-sat-sat
4、find-found-foundhold-held-heldspit-spat-spatshine-shone-shonewin-won-wonhang-hung-hungdig-dug-duglose-lost-lost10. 改变辅音字母（1个）make-made-made11. 改变元、辅音字母（4个）leave-left-leftstand-stood-stoodhave/has-had-hadunderstand-understood-understood3、 A-B-C型。即原形，过去式和过去分词都不相同（共35个）1. i-a-u变化（6个）begin-began-begundr
5、ink-drank-drunksing-sang-sungring-rang-rungswim-swan-swumsink-sank-sunk2. 词尾为-ow，-aw时，过去式将其变为-ew，过去分词在其原形后+n（5个）blow-blew-blowndraw-drew-drawngrow-grew-grownknow-knew-knownthrow-threw-thrown3. 词尾为“i+辅音（1个）+e”，过去式将i变为o，过去分词多在原形后+n，若那个辅音字母为d或t，须双写d或t再+n (4个)drive-drove-drivenwrite-wrote-writtenride-ro
6、de-riddenrise-rose-risen4. 过去分词在过去式后+（e）n（5个）break-broke-brokenchoose-chose-chosenfreeze-froze-frozenspeak-spoke-spokenwake-woke-woken5. 过去分词由过去式+ten构成（1个）forget-forgot-forgotten6. 过去分词由原形+（e）n构成（6个）be-was/were-beeneat-ate-eatenfall-fell-fallengive-gave-givensee-saw-seenhide-hid-hidden7. 词尾为-ake时，过去
7、式将其变为-ook，过去分词在原形后+n（2个）take-took-takenmistake-mistook-mistaken8. 原形。过去式和过去分词都不相同（6个）do-did-donefly-flew-flowngo-went-gonelie-lay-lainshow-showed-shownwear-wore-worn4、 A-A-B型，即过去式和原形相同（1个）beat-beat-beaten5、 A-B-A型，即过去分词和原形相同（3个）come-came-comebecome-became-becomerun-ran-run6、 情态动词，只有原形和过去式，没有过去分词（4个）can-couldmay-mightwill-wouldshall-should
