Stem Changing in the
Preterite
Stem Change Review
How do you change QUERER (e-ie)?
FOLLOW THESE STEPS:
1. Remove the ending
2. Find the stem
Q UEIE R E R
1. Quiero
2. Quieres
3. Quiere
3. Change the stem
4. Queremos
4. Conjugate!
5. Queréis
6. Quieren
When do you preterite stem change?
Stem changing in the preterite is EASY!!!! Follow
these three simple rules:
1. You stem change only “IR” verbs.
2. You only stem change the “bottom of the
boot”.
3. The verb will only change from “E-I” or “O-U”.
4. You conjugate the other forms like normal.
Stem Change Preterite
How do you change DORMIR (o-ue,u)?
FOLLOW THESE STEPS:
1. Remove the ending
2. Find the stem
3. Change the stem
(only in the bottom of
the boot)
4. Conjugate!
DU
ORMIR
1. Dormí
2. Dormiste
3. Durmió
4. Dormimos
5. Dormisteis
6. Durmieron
Los verbos
•
•
•
•
•
•
•
•
•
Pedir (e-i)
Servir (e-i)
Seguir (e-i)
Divertirse (e-i)*
Preferir (e-i)*
Sentirse (e-i)*
Repetir (e-i)
Vestirse (e-i)
Competir (e-i)
*Originally (e-ie)
• Dormir (o-u)**
• Morir (o-u)**
• **Originally (o-ue)
• Reirse (e-i)*
(Sonreirse)
• Río
• Rieron
• No double “i”
¡PRÁCTICA!
1.
2.
3.
4.
5.
6.
7.
8.
Morir (yo)
Repetir (Uds.)
Preferir (yo)
Almorzar (ellos)
Servir (Ud.)
Vestir (ellas)
Sentir (tú)
Competir (nosotros)
1.
2.
3.
4.
5.
6.
7.
8.
Morí
Repitieron
Preferí
Almorzaron
Sirvió
Vistieron
Sentiste
Competimos
Let’s Try Another
How do you change PEDIR (e-i, i)?
FOLLOW THESE STEPS:
1. Remove the ending
2. Find the stem
3. Change the stem
(only in the bottom of
the boot)
4. Conjugate!
P EI D I R
1. Pedí
2. Pediste
3. Pidió
4. Pedimos
5. Pedisteis
6. Pidieron
Let’s Try Another
How do you change COSTAR (o-ue)?
FOLLOW THESE STEPS:
1. Remove the ending
2. Find the stem
3. Change the stem
(only in the bottom of
the boot)
4. Conjugate!
CU
OST AR
1. Costé
2. Costaste
3. Costó
4. Costamos
5. Costasteis
6. Costaron
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Stem Changing in the Preterite