1. Stem Changing Verbs
In the Preterite

2. In the present tense, stem changing verbs are known as “shoe verbs”, verbos zapatos

3. The stem change occurs “within” the shoe excluding the nosotros & vosotros forms

4. IN the preterite tense, stem changing verbs are known as “sandals”, “sandalias”

5. The stem change occurs only in 3rd person singular & plural, the bottom of the “sandal”

6. There are only 2 possible stem changes in the preterite
e to i
o to u

7. None There are no AR stem changing verbs in the preterite
AR examples
None
There are no AR stem changing verbs in the preterite

8. None There are no ER stem changing verbs in the preterite
ER examples
None
There are no ER stem changing verbs in the preterite

9. Pedir – to ask for pedí pedimos Pediste pedisteis pidió pidieron
IR example e to i
Pedir – to ask for
pedí pedimos
Pediste pedisteis
pidió pidieron

10. Dormir – to sleep dormí dormimos dormiste dormisteis durmió durmieron
IR example o to u
Dormir – to sleep
dormí dormimos
dormiste dormisteis
durmió durmieron

11. repetir morir seguir servir preferir sentir
Otros verbos e to i o to u
repetir morir
seguir
servir
preferir
sentir