Irregular verbs

1. Some verbs have the same past and past participle.

present past past participle
bring brought (has, have, had) brought
catch caught (has, have, had) caught
find found (has, have, had) found
say said (has, have, had) said
think thought (has, have, had) thought
teach taught (has, have, had) taught

2. Some form the past participle by adding -n to the past.

present past past participle
break broke (has, have, had) broken
choose chose (has, have, had) chosen
freeze froze (has, have, had) frozen
speak spoke (has, have, had) spoken
drive drove (has, have, had) driven
draw drew (has, have, had) drawn
know knew (has, have, had) known
rise rose (has, have, had) risen
steal stole (has, have, had) stolen

3. Some change one vowel in the past and in the past participle.

present past past participle
drink drank (has, have, had) drunk
ring rang (has, have, had) rung
sing sang (has, have, had) sung
swim swam (has, have, had) swum
begin began (has, have, had) begun

4. The forms of some common irregular verbs appear below.

present past past participle
come came (has, have, had) come
do did (has, have, had) done
eat ate (has, have, had) eaten
fall fell (has, have, had) fallen
fly flew (has, have, had) flown
give gave (has, have, had) given
go went (has, have, had) gone
grow grew (has, have, had) grown
ride rode (has, have, had) ridden
run ran (has, have, had) run
see saw (has, have, had) seen
take took (has, have, had) taken
wear wore (has, have, had) worn
write wrote (has, have, had) written
hide hid (has, have, had) hidden
tear tore (has, have, had) torn