stem-changing verbs in the preterite

1
stem-changing verbs in the preterite

• Bad news there are some
• Good news there arent 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
• Why are there stem-changers?
• blame Latin/early Spanish
• What changes?
• o ? ue and e ? ie, among a few others
• in the shoe/boot

3
When does a verb stem-change?

• 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

4
Pretérito de -ire ? i o ? u
-í -imos
-iste -isteis
-ió -ieron
5
A practicar!

• página 179, actividad 11