sustituir
In the tables below, the stem is shown in black and the ending in purple.
1.Presente
Presente
Habitual actions, general truths, and what's happening now.
| yo | sustituyo |
| tú | sustituyes |
| él/ella | sustituye |
| nosotros | sustituimos |
| vosotros | sustituís |
| ellos/ellas | sustituyen |
Yo sustituyo el azúcar por miel en mi té.
I substitute sugar for honey in my tea.
Ella sustituye las bombillas viejas por nuevas.
She replaces the old light bulbs with new ones.
2.Pretérito Indefinido
Pretérito Indefinido
Completed actions at a specific point in the past.
| yo | sustituí |
| tú | sustituiste |
| él/ella | sustituyó |
| nosotros | sustituimos |
| vosotros | sustituisteis |
| ellos/ellas | sustituyeron |
Ayer sustituí el aceite de oliva por aceite de girasol.
Yesterday, I substituted olive oil for sunflower oil.
Él sustituyó su coche viejo por uno eléctrico.
He replaced his old car with an electric one.
3.Imperfecto
Imperfecto
Ongoing or repeated actions in the past, descriptions, and background context.
| yo | sustituía |
| tú | sustituías |
| él/ella | sustituía |
| nosotros | sustituíamos |
| vosotros | sustituíais |
| ellos/ellas | sustituían |
Cuando era niño, siempre sustituía la leche por jugo.
When I was a child, I always substituted milk for juice.
Nosotros sustituíamos los libros de texto cada año.
We used to replace the textbooks every year.
4.Futuro Simple
Futuro Simple
Future actions, predictions, and speculation about the present.
| yo | sustituiré |
| tú | sustituirás |
| él/ella | sustituirá |
| nosotros | sustituiremos |
| vosotros | sustituiréis |
| ellos/ellas | sustituirán |
Mañana sustituiré el papel en la impresora.
Tomorrow, I will substitute the paper in the printer.
Ella sustituirá su computadora antigua por una nueva.
She will replace her old computer with a new one.
5.Condicional
Condicional
Hypothetical situations, polite requests, and future-in-the-past.
| yo | sustituiría |
| tú | sustituirías |
| él/ella | sustituiría |
| nosotros | sustituiríamos |
| vosotros | sustituiríais |
| ellos/ellas | sustituirían |
Yo sustituiría el café por té si tuviera más tiempo.
I would substitute coffee for tea if I had more time.
Si fuera posible, ellos sustituirían el viaje por una videoconferencia.
If it were possible, they would replace the trip with a video conference.
6.Subjuntivo Presente
Subjuntivo Presente
Wishes, doubts, emotions, and subordinate clauses expressing uncertainty.
| yo | sustituyera |
| tú | sustituyas |
| él/ella | sustituyas |
| nosotros | sustituyamos |
| vosotros | sustituyáis |
| ellos/ellas | sustituyan |
Es importante que yo sustituya el material dañado.
It's important that I substitute the damaged material.
Espero que ella sustituya su decisión pronto.
I hope that she substitutes her decision soon.
7.Subjuntivo Imperfecto
Subjuntivo Imperfecto
Past subjunctive contexts, hypothetical si-clauses, and polite suggestions.
| yo | sustituyera |
| tú | sustituyeras |
| él/ella | sustituyera |
| nosotros | sustituyéramos |
| vosotros | sustituyerais |
| ellos/ellas | sustituyeran |
Si yo sustituyera el aceite, la receta sería mejor.
If I were to substitute the oil, the recipe would be better.
Si ellos sustituyeran el plan, tendríamos más éxito.
If they were to substitute the plan, we would have more success.
"sustituir" in other languages
Related verbs
Common questions
- Is "sustituir" regular or irregular in Spanish?
- "sustituir" is an irregular Spanish verb. It does not follow the standard -ir conjugation pattern and must be memorized.
- How do you conjugate "sustituir" in the present tense?
- In the Presente, "sustituir" conjugates as: sustituyes, sustituyo, sustituyen, and more. See the full table above.
- What is the past tense of "sustituir" in Spanish?
- In the Pretérito Indefinido, "sustituir" conjugates as: sustituiste, sustituí, sustituyeron, and more. See the full table above.
- How common is "sustituir" in Spanish?
- "sustituir" (to replace, to substitute) is one of the most commonly used verbs in Spanish.