（1）原形、过去式、过去分词相同：
cast/ cost/ cut/ hit/ hurt/ let/ put/ broadcast/
burst/ read/ red/ set/ shut/ spread/ thrust/ upset
（2）原形、过去式相同，过去分词不同：
beat/ beat/ beaten
（3）原形、过去分词相同，过去式不同：
come/ came/ come become/ became/ become
run/ ran/ run overcome/ overcame/ overcome
（4）原形不同，过去式，过去分词相同：
feel/ felt/ felt sleep/ slept/ slept
leave/ left/ left smell/ smelt/ smelt
keep/ kept/ kept creep/ crept/ crept
kneel/ knelt/ knelt sweep/ swept/ swept
spell/ spelt/ spelt weep/ wept/ wept
catch/ caught/ caught fight/ fought/ fought
teach/ taught/ taught think/ thought/ thought
stand/ stood/ stood lay/ laid/ laid
understand/ understood/ understood pay/ paid/ paid
bleed/ bled/ bled say/ said/ said
feed/ fed/ fed stick/ stuck/ stuck
lead/ led/ led strike/ struck/ struck
meet/ met/ met tell/ told/ told
learn/ learnt/ learnt sell/ sold/ sold
learned/ learned win/ won/ won
burn/ burnt/ burnt wind/ wound/ wound
burned/ burned have（has）/ had/ had
deal/ dealt/ dealt hear/ heard/ heard
mean/ meant/ meant lean/ leant/ leant
dream/ dreamt/ dreamt leaned/ leaned
bend/ bent/ bent shine/ shone/ shone
build/ built/ built shoot/ shot/ shot
lend/ lent/ lent show/ showed/ shown
spend/ spent/ spent / showed
flee/ fled/ fled sit/ sat/ sat
speed/ sped/ sped lose/ lost/ lost
/ speeded/ speeded dig/ dug/ dug
spit/ spit/ spit hold/ held/ held
/ spat/ spat get/ got/ got（AmE gotten）
bring/ brought/ brought find/ found/ found
buy/ bought/ bought make/ made/ made
light/ lit/ lit
/ lighted/ lighted
（5）三者均不同：
drive/ drove/ driven blow/ blew/ blown
rise/ rose/ risen fly/ flew/ flown
wake woke/ woken grow/ grew/ grown
do/ did/ done know/ knew/ known
go/ went/ gone throw/ threw/ thrown
see/ saw/ seen prove/ proved/ proven
eat/ ate/ eaten break/ broke/ broken
fall/ fell/ fallen choose/ chose/ chosen
give，gave given freeze/ froze/ frozen
shake/ shook/ shaken speak/ spoke/ spoken
take/ took/ taken steal/ stole/ stolen
mistake/ mistook/ mistaken weave/ wove/ woven
forbid/ forbad/ forbidden forget/ forgot/ forgotten
begin/ began/ begun hide/ hid/ hidden
drink/ drank/ drunk ride/ rode/ ridden
ring/ rang/ rung swim/ swam/ swum
sing/ sang/ sung write/ wrote/ written
sink/ sank/ sunk wear/ wore/ worn
（6）相同动词因其过去式、过去分词有两形式而产生不同词义：
speed过去式、过去分词有两种：
sped/ sped 快行 speeded/ speeded加速
light过去式，过去分词有两种：
lit/ lit 点着（表语） lighted/ lighted 供电，点燃的（定语）
shine过去式、过去分词有两种：
shone/ shone/ 照耀 shined/ shined擦亮
hang过去式、过去分词有两种：
hung/ hung 悬挂 hanged/ hanged绞死
（7）drunken，stricken，sunken已转为形容词常作定语
a～ sot酒鬼 in a～manner摇摇晃晃地
（8）lie躺卧lay/ lain/ lying（现在分词）
lie 撒谎 lied/ lied/ lying
lay 放，下蛋laid/ laid/ laying
（9）come，become，overcome属不规则变化，但welcome属规则动词，其过去式、过去分词为：welcomed，welcomed
（10）fly，blow不是规则变化，但flow（流）是规则变化，过去式、过去分词为flowed，flowed.
（11） find发现 found found
found 创建 founded founded
wind 绕 wound wound
wound 伤害 wounded wounded
see 看见 saw seen
saw 锯 sawed sawed
bear 作“出生”， 过去分词有两种：born，borne，
borne 用于have之后及带有by的被动句中；
born用于be born in/ on/ at中。
作“出生”，以外意义，其形式为bear/ bore/ borne忍受。
