am/is = was

are = were

do = did

go = went

eat = ate

have = has

make = made

take = took

see = saw

fly = flew

sell = sold

tell = told

find = found

send = sent

buy = bought

bring = brought

teach = taught

think = thought

swim = swam

get = got

run = ran

wake = woke

ride = rode

rise = rose

sing = sang

come = came

give = gave

know = knew

blow = blew

drink = drank

write = wrote

draw = drew

sit = sat

sleep = slept

keep = kept

sweep = swept

Espero que tenha ajudado <3