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Complete Conjugation Tables

Reference all tenses and moods

Subjunctive

Imperfect Subjunctive

yosustituyera
sustituyeras
él/ella/ustedsustituyera
nosotrossustituyéramos
vosotrossustituyerais
ellos/ellas/ustedessustituyeran

The imperfect subjunctive is built from the 'sustituyeron' stem: sustituyera, sustituyeras, etc.

Present Subjunctive

yosustituya
sustituyas
él/ella/ustedsustituya
nosotrossustituyamos
vosotrossustituyáis
ellos/ellas/ustedessustituyan

The present subjunctive follows the 'yo' form of the present indicative, adding a 'y': sustituya, sustituyas, etc.

Imperative

Negative Imperative

no sustituyas
ustedno sustituya
nosotrosno sustituyamos
vosotrosno sustituyáis
ustedesno sustituyan

Negative commands use the present subjunctive forms: no sustituyas, no sustituya.

Imperative

sustituye
ustedsustituya
nosotrossustituyamos
vosotrossustituid
ustedessustituyan

Give commands to replace things: sustituye (tú), sustituya (usted), sustituyamos (nosotros).

Indicative

Conditional

yosustituiría
sustituirías
él/ella/ustedsustituiría
nosotrossustituiríamos
vosotrossustituiríais
ellos/ellas/ustedessustituirían

The conditional is regular: add -ía endings to the infinitive 'sustituir'.

Preterite

yosustituí
sustituiste
él/ella/ustedsustituyó
nosotrossustituimos
vosotrossustituisteis
ellos/ellas/ustedessustituyeron

In the preterite, sustituir changes 'i' to 'y' in the third-person forms: sustituyó and sustituyeron.

Imperfect

yosustituía
sustituías
él/ella/ustedsustituía
nosotrossustituíamos
vosotrossustituíais
ellos/ellas/ustedessustituían

Sustituir is regular in the imperfect: sustituía, sustituías, sustituía, sustituíamos, sustituíais, sustituían.

Present

yosustituyo
sustituyes
él/ella/ustedsustituye
nosotrossustituimos
vosotrossustituís
ellos/ellas/ustedessustituyen

Sustituir is irregular in the present tense, adding a 'y' before the ending in most forms: sustituyo, sustituyes, sustituye, sustituyen.

Future

yosustituiré
sustituirás
él/ella/ustedsustituirá
nosotrossustituiremos
vosotrossustituiréis
ellos/ellas/ustedessustituirán

The future of sustituir is regular: just add endings to the infinitive (sustituiré, sustituirás).

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Frequently Asked Questions

What does sustituir mean in Spanish?

sustituir means "to replace".

Is sustituir a regular or irregular verb?

sustituir is a irregular -ir verb in Spanish.

How do you conjugate sustituir in the present tense?

The present tense of sustituir is: yo sustituyo, tú sustituyes, él/ella/usted sustituye, nosotros sustituimos, vosotros sustituís, ellos/ellas/ustedes sustituyen.

How do you conjugate sustituir in the preterite (past tense)?

The preterite of sustituir is: yo sustituí, tú sustituiste, él/ella/usted sustituyó, nosotros sustituimos, vosotros sustituisteis, ellos/ellas/ustedes sustituyeron.

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sustituir conjugation cheat sheet

sustituir conjugation cheat sheet — present, preterite, imperfect, future and conditional forms