Present: Irregular 'IR' Verbs (4)
Spanish: Cambridge International GCSE, topic 8.1.18
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
- 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
- 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 Present: Irregular 'IR' Verbs (4)
How do you say 'they build' in Spanish?