不规则动词过去式和过去分词分为多种类型，AAA型（现在式、过去式、过去分词同形）例如：cost cost cost 花费；AAB型（现在式和过去式同形）例如：beat beat beaten 打，ABA型（现在式和过去分词同形）例如：come came come 来，等等。
类型划分⒈A---A---A型（现在式、过去式、过去分词同形）
动词原形（现在式）过去式，过去分词
cost cost cost 花费
put put put 放下
read read read 读(读音是ABB型)
hurt hurt hurt 伤
⒉A---A---B型（现在式和过去式同形）
beat beat beaten打
⒊A---B---A型（现在式和过去分词同形）
come came come来
become became become变
⒋A---B---B型
⑴在动词原形后加一个辅音字母d或t构成过去式或过去分词。
burn burnt burnt燃烧
learn learned/learnt learned/learnt学习
⑵把动词原形的最后一个辅音字母“d”改为“t”构成过去式或过去分词。
build built built建筑
lend lent lent借给
⑶其他
pay paid paid付
lay laid laid下蛋
不规则动词表序号动词原形或不定式过去式现在分词或动名词第三人称单数1bearborebearingbears2forbearforboreforbearingforbears3overbearoverboreoverbearingoverbears4bendbentbendingbends5unbendunbentunbendingunbends6bidbade，bidbiddingbids7forbidforbade，forbadforbiddingforbids8outbidoutbidoutbiddingoutbids9underbidunderbidunderbiddingunderbids10bindboundbindingbinds11rebindreboundrebindingrebinds12unbindunboundunbindingunbinds13buildbuiltbuildingbuilds14rebuildrebuiltrebuildingrebuilds15castcastcastingcasts16broadcastbroadcast，broadcastedbroadcastingbroadcasts17forecastforecast，forecastedforecastingforecasts18miscastmiscastmiscastingmiscasts19overcastovercastovercastingovercasts20recastrecastrecastingrecasts21comecamecomingcomes22becomebecamebecomingbecomes23overcomeovercameovercomingovercomes24dealdealtdealingdeals25misdealmisdealtmisdealingmisdeals26dodiddoingdoes27outdooutdidoutdoingoutdoes28overdooverdidoverdoingoverdoes29redoredidredoingredoes30undoundidundoingundoes31drawdrewdrawingdraws32withdrawwithdrewwithdrawingwithdraws33fallfellfallingfalls34befallbefellbefallingbefalls35getgotgettinggets36begetbegotbegettingbegets37forgetforgotforgettingforgets38givegavegivinggives39forgiveforgaveforgivingforgives40misgivemisgavemisgivingmisgives
