1. stem-changing verbs in the preterite Bad news: there are some Good news: there aren’t as many as in the present tense!

2. ¡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”

3. 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 formsforms they change in the “sole” e  i; o  u  competir: ella compitió  dormir: él durmió

4. PretéritoPretérito de -ir e  i; o  u -í-imos -iste-isteis -ió-ieron

5. ¡A practicar! página 179, actividad 11