1. Verbos que cambian de raíz E-I
Stem Changing Verbs E-I

2. Hasta Ahora…
Some verbs in Spanish undergo a Stem Change in the present tense. When E is the last stem vowel it changes to IE in every conjugation except Nosotros. (Preferir = Prefiero)
In some verbs when O is the last stem vowel it changes to UE in every conjugation except nosotros (Dormir = Duermes)

3. Finally, Some verbs undergo a change from E to I
Finally, Some verbs undergo a change from E to I. These verbs tend to be –IR verbs only.
Pedir to order/ask for
Pido Pedimos
Pides Piden
Pide

4. Otros verbos semejantes
Seguir to follow
Conseguir to get/obtain
Decir to say
Servir to serve/work
Repetir to repeat

5. The verb “decir” has an irregular first person. “digo”
The verb seguir/conseguir drop the “u” in the first person conjugation
“sigo” “consigo”
Almost all of these verbs maintain the stem change in the present progressive: diciendo, siguiendo, pidiendo,

6. Práctica Conjugate the following Conseguir (yo, usted)
Pedir (Juan y yo, ellos)
Decir (Tú, yo, mis primos)
Servir (mi reloj, Yo)
Preferir (Ustedes, Alejandra)
Encontrar (Tú, Tú y yo)
Repetir (La clase, ellas)