-ir Stem-changing Preterite Verbs

Dormir

To Sleep

durmió

He, she, it, you (formal) slept

durmieron

They, all of you slept

dormimos

we slept

dormí

I slept

dormiste

you slept

sentir(se)

to feel

me sentí

I felt

te sentiste

You felt

se sintió

He, she, it, you (formal) felt

nos sentimos

We felt

se sintieron

they, all of you felt

Pedir

to ask for, request

(yo) pedí

I asked for, requested

(tú) pediste

You asked for, requested

(él, ella, ud.) pidió

He, she, you (formal) asked for, requested

(nosotros) pedimos

We asked for, requested

(ellos, Uds.) pidieron

They, all of you asked for, requested

O ---> U stem-changing verbs in the preterite

Dormir, Morir

E ----> I stem-changing verbs in the preterite

Pedir, Repetir, Preferir, Sentir(se)