Irregular AR Verbs
Spanish: KS3, topic 16.1.2
Stem Changing AR Verbs (E → IE)
When conjugating some AR verbs in the present tense, the 'e' in the infinitive becomes 'ie'. This does NOT happen in the 'vosotros' and 'nosotros' forms.

Cerrar - to close
- Cierro - I close.
- Cierras - you close.
- Cierra - he/she closes.
- Cerramos - we close.
- Cerráis - you close.
- Cierran - they close.

Comenzar - to start
- Comienzo - I start.
- Comienzas - you start.
- Comienza - he/she starts.
- Comenzamos - we start.
- Comenzáis - you start.
- Comienzan - they start.

Empezar - to begin
- Empiezo - I begin.
- Empiezas - you begin.
- Empieza - he/she begins.
- Empezamos - we begin.
- Empezáis - you begin.
- Empiezan - they begin.

Pensar - to think
- Pienso - I think.
- Piensas - you think.
- Piensa - he/she thinks.
- Pensamos - we think.
- Pensáis - you think.
- Piensan - they think.

Nevar - to snow
- Nieva - It snows.
- This verb is only used in the 3rd person singular form.
- Hiela - It freezes.
- This verb is only used in the 3rd person singular form.

Other verbs that follow this pattern
- Merendar - to have a snack, to have a picnic.
- Recomendar - to recommend.
- Sentarse - to sit.
- Negar - to deny.
Test yourself on Irregular AR Verbs
What is the correct way to say 'we think'?