Los verbos que no siguen las reglas de conjugación se les denomina verbos irregulares. Hay una buena cantidad de estos en inglés.  La única forma de aprenderlos es memorizándolos.

SIGNIFICADOPRESENTEPASADOPARTICIPIO DE PASADO
despertarawakeawokeawoken
ser/estarbewas/werebeen
llegar a serbecomebecamebecome
comenzarbeginbeganbegun
doblarbendbentbent
morderbitebitbitten
sangrarbleedbledbled
soplarblowblewblown
romperbreakbrokebroken
traerbringbroughtbrought
traerbringbroughtbrought
construirbuildbuiltbuilt
quemarburnburntburnt
comprarbuyboughtbought
atraparcatchcoughtcought
elegirchoosechosechosen
venircomecamecome
costarcostcostcost
cortarcutcutcut
cavardigdigdig
buceardivedovedove
hacerdo diddone
dibujardrawdrewdrawn
soñardreamdreamtdreamt
beberdrinkdrankdrunk
conducirdrivedrove driven
comereatateeaten
caerfallfellfallen
alimentarfeedfedfed
sentirfeelfeltfelt
lucharfightfoughtfought
encontrarfindfoundfound
huirfleefledfled
volarflyflewflown
prohibirforbidforbadeforbidden
olvidarforgiveforgaveforgiven
congelarfreezefrozefrozen
obtenergetgotgotten
dargivegavegiven
irgowentgone
molergrindgroundground
colgarhanghunghung
tenerhavehadhad
oirhearheardheard
esconderhidehidhidden
golpearhithithit
sujetarholdheldheld
herirhurthurthurt
mantenerkeepkeptkept
arrollidarsekneelkneltknelt
tejerknitknitknit
conocerknowknewknown
colocarlaylaidlaid
marcharleadled led
partirleaveleftleft
prestarlendlentlent
echarselielaylain
encenderlightlitlit
perderloselostlost
hacermakemademade
significarmeanmeantmeant
conocermeetmetmet
errarmistakemistookmistaken
pagarpaypaidpaid
probarproveprovedproven
ponerputputput
dejar dequitquitquit
leerreadreadread
montarrideroderidden
tocarringrangrung
levantarriseroserisen
correrrunrunrun
decirsaysaidsaid
verseesawseen
buscarseeksoughtsought
vendersellsoldsold
enviarsendsentsent
cosersewsewedsewn
agitarshakeshookshaken
afeitarshaveshavedshaven
brillarshineshoneshone
dispararshootshotshot
mostrarshowshowedshown
encogershrinkshrankshrunk
cerrarshutshutshut
cantarsingsangsung
hundirsinksanksunk
sentarsesitsatsat
dormirsleepsleptslept
deslizarslideslidslid
hablarspeakspokespoken
gastarspendspentspent
derramarspillspiltspilt
hunterspreadspreadspread
estar de piestandstoodstood
robarstealstolestolen
pegarsestickstuckstuck
picarstingstungstung
jurarswearsworesworn
barrersweepsweptswept
hincharswellswelledswollen
nadarswimswungswung
columpiarswingswungswung
tomartaketooktaken
enseñarteachtaughttaught
rasgarteartoretorn
decirtelltoldtold
pensarthinkthoughtthought
tirarthrowthrewthrown
comprenderunderstandunderstoodunderstood
disgustarupsetupsetupset
despertarwakewokewoken
llevar puestowearworeworn
llorarweepweptwept
ganarwinwonwon
escribirwritewrotewritten