Preterite Tense

é

ar yo form

aste

ar tu form

ó

ar el/ella/usted form

amos

ar nosotros form

aron

ar ellos/as/ustedes form

í

er/ir yo form

iste

er/ir tu form

ió

er/ir el/ella/usted form

imos

er/ir nosotros form

ieron

er/ir ellos form

Only in the yo form

When do you change the ending for the -car/-gar/-zar verbs?

-qué

-car verbs

-gué

-gar verbs

-cé

-zar verbs

El/ella/usted: -yó

ellos/as/ustedes : yeron

accent mark over the i on the rest of the forms

How do you stem change verbs that have stems that end in a vowel?

El/ella/usted: -yó

ellos/as/ustedes : yeron

no accent marks over the i on the nosostros, tú, and vostros forms.

What do you do with verbs that end with -uir?

Only stem change in the el/ella/usted form and the ellos/as/ustedes form.

What do you do with -ir verbs that stem-change in the present tense?

e → i

Ir verbs with a stem-change on the e

o → u

Ir verbs with a stem-change on the o