stem-changing verbs in the preterite

Bad news: there are some

Good news: there aren’t as many as in the present tense!

¡Repasito rapidito! What is the stem?

not the ending (i.e. -ar, -er, -ir) the part of the verb that (normally) does not change contains the meaning of the verb

Why are there stem-changers? blame Latin/early Spanish

What changes in the present tense? o ue and e ie, among a few others “in the shoe/boot”

When does a verb stem-change in the preterite?

Great news! only -ir verbs have stem changes, and only in

Ud., él/ella, Uds., and ellos/ellas forms they change in the “sole” e i; o u

competir: ella compitió dormir: él durmió

Pretérito de -ire i; o u

-í -imos

-iste -isteis

-ió -ieron

¡A practicar!

página 179, actividad 11