Irregular IR Verbs 2

Spanish: Edexcel IGCSE, topic 8.1.10

Stem Changing Verbs (O → UE)

When conjugated in the present tense, some -IR verbs change. The 'u' 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

Stem changes O → UE

  • When conjugated, these IR verbs change from their infinitive form.
  • The 'o' in the infinitive changes to 'ue' when conjugated.
  • E.g. Morir (to die) becomes 'muero' (I die).
  • E.g. Muero, mueres, muere, morimos, morís, mueren.
Dormir - to sleep

Dormir - to sleep

  • Duermo - I sleep.
  • Duermes - you sleep.
  • Duerme - he/she sleeps / you sleep (formal).
  • Dormimos - we sleep.
  • Dormís - you sleep (plural).
  • Duermen - they sleep / you sleep (formal plural).
Morir - to die

Morir - to die

  • Muero - I die.
  • Mueres - you die.
  • Muere - he/she dies / you die (formal).
  • Morimos - we die.
  • Morís - you die (plural).
  • Mueren - they die / you die (formal plural).

Verbs That End in UIR

Verbs that end in UIR in the present tense drop IR and add a 'y' and the normal endings. This does NOT happen in the 'nosotros' and 'vosotros form'. Derivatives of these verbs follow the same pattern.

Construir - to build

Construir - to build

  • Construyo - I build.
  • Construyes - you build.
  • Construye - he/she builds / you build (formal).
  • Construimos - we build.
  • Construís - you build (plural).
  • Construyen - they build / you build (formal plural).
Contribuir - to contribute

Contribuir - to contribute

  • Contribuyo - I contribute.
  • Contribuyes - you contribute.
  • Contribuye - he/she contributes / you contribute (formal).
  • Contribuimos - we contribute.
  • Contribuís - you contibute (plural).
  • Contribuyen - they contribute / you contribute (formal plural).

Test yourself on Irregular IR Verbs 2

  • ¿Qué significa 'dormimos' en Inglés?

  • How do you say 'they build' in Spanish?

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