Present: Irregular 'AR' Verbs (2/3)
Spanish: Cambridge International GCSE, topic 8.1.5
Stem Changing AR Verbs (O → UE)
In Spanish in the present tense some AR verbs change when conjugated. The 'o' in the infinitive becomes 'ue'. This does NOT happen in the 'nosotros' and 'vosotros' forms. Derivatives of these verbs follow the same pattern.

Stem changes O → UE
- 'Soñar' (to dream) becomes 'sueño' (I dream).
- 'Encontrar' (to find) becomes 'encuentro' (I find).

Soñar - to dream
- Sueño - I dream.
- Sueñas - you dream.
- Sueña - he/she dreams / you dream (formal).
- Soñamos - we dream.
- Soñáis - you dream (plural).
- Sueñan - they dream / you dream (formal plural).

Aprobar - to approve
- Apruebo - I approve.
- Apruebas - you approve.
- Aprueba - he/she approves / you approve (formal).
- Aprobamos - we approve.
- Aprobáis - you approve (plural).
- Aprueban - they approve / you approve (formal plural).

Costar -cost
- Cuesta - he/she/it costs.
- Cuestan - they cost.

Mostrar - to show
- Muestro - I show.
- Muestras - you show.
- Muestra - he/she shows / you show (formal).
- Mostramos - we show.
- Mostráis - you show (plural).
- Muestran - they show / you show (formal plural).

Verbs that follow this pattern:
- Volar - to fly.
- Recordar - to remember.
- Colgar - to put (photos on social media)
- Almorzar - to have lunch.
- Encontrar - to find.
- Probar - to try/taste.
- Acordar - to agree on.
- Contar - to count/tell.
Test yourself on Present: Irregular 'AR' Verbs (2/3)
Encontrar - to Find
How do you say 'they try'?