Stem-changing verbs: o to ue

Stem-changing verbs (o to ue)

Another common stem change in Spanish is from o to ue.

This change happens in all forms except nosotros/nosotras (we) and vosotros/vosotras (you all).

For example, with the verb dormir (to sleep):

I work a lot and sleep late.
Trabajo mucho y duermo tarde.
Do you sleep here at night?
¿Vosotros dormís aquí de noche?

Here is the full present tense conjugation for dormir:

PronounForm
yoduermo
túduermes
él, ella, ustedduerme
nosotros/asdormimos
vosotros/asdormís
ellos, ellas, ustedesduermen

Abilities and possibilities

The verb poder (to be able to / can) is a crucial o to ue verb. It is often followed directly by an infinitive (an unconjugated verb) to talk about what you can or cannot do.

I cannot open the door.
No puedo abrir la puerta.
Can you help?
¿Puedes ayudar?

Finding and returning

Other common o to ue verbs include encontrar (to find) and volver (to return).

They do not find the key.
Ellos no encuentran la llave.

Remember, the nosotros and vosotros forms always keep the original o.

We find something in the bed.
Encontramos algo en la cama.
When do you return to the city?
¿Cuándo vuelves a la ciudad?

Remembering

The verb recordar (to remember) follows the exact same pattern.

I do not remember the name.
No recuerdo el nombre.
Does she remember something?
¿Ella recuerda algo?