Preterite and Imperfect

Preterite

has a specific beginning and end, occurred one time, interrupted something going on

Imperfect

past actions that do not have a beginning or an end, action was occurring (in progress) in the past, happened many times, described a condition

Yo -ar (preterite)

é

Tú -ar (preterite)

aste

él, ella, usted -ar (preterite)

ó

nosostros -ar (preterite)

amos

vosotros -ar (preterite)

asteis

ellos, ellas, ustedes -ar (preterite)

aron

yo -er, -ir (preterite)

í

tú -er, -ir (preterite)

iste

él, ella, usted -er, -ir (preterite)

ió

nosotros -er, -ir (preterite)

imos

vosotros -er, -ir (preterite)

isteis

ellos, ellas, ustedes -er, -ir (preterite)

ieron

yo -ar (imperfect)

aba

tú -ar (imperfect)

abas

él,ella, usted -ar (imperfect)

aba

nosotros -ar (imperfect)

ábamos

vosotros -ar (imperfect)

abais

ellos, ellas, ustedes -ar (imperfect)

aban

yo -er, -ir (imperfect)

ía

tú -er, -ir (imperfect)

ías

él, ella, usted -er, -ir (imperfect)

ía

nosotros -er, -ir (imperfect)

íamos

vosotros -er, -ir (imperfect)

íais

ellos, ellas, ustedes -er, -ir (imperfect)

ían