Irregular Preterite Verb Forms in Spanish

In the Spanish language there are just three "really irregular" preterite tense verb forms you need to memorize. In the preterite form, they are irregular in both their stems and endings. Read then listen to each of the irregular preterite verbs below, then repeat each out loud.
English
Spanish
to give
dar
I gave
yo di
you gave (familiar)
diste
you gave (formal)
usted dio
we gave
nosotros dimos
you gave (familiar plural)
vosotros disteis
you gave (formal plural)
ustedes dieron


to be
ser
I was
yo fui
you were (familiar)
fuiste
you were (formal)
usted fue
we were
nosotros fuimos
you were (familiar plural)
vosotros fuisteis
you were (formal plural)
ustedes fueron


to go
ir
I went
yo fui
you went (familiar)
fuiste
you went (formal)
usted fue
we went
nosotros fuimos
you went (familiar plural)
vosotros fuisteis
you went (formal plural)
ustedes fueron