demostrar

to demonstrate

Spanish Irregular

The Spanish verb "demostrar" means "to demonstrate" in English. It is an irregular verb. Below you'll find the complete conjugation tables for "demostrar" across all 5 tenses.

How to Conjugate "demostrar" in the Present Tense

Presente de indicativo Actions happening now or regularly
Person English Conjugation
yo I demuestro
you (informal) demuestras
él/ella/usted he/she/you (formal) demuestra
nosotros we demostramos
vosotros you all (Spain) demostráis
ellos/ustedes they/you all demuestran
Él demuestra cómo funciona esto.
He demonstrates how this works.

How to Conjugate "demostrar" in the Past (completed) Tense

Pretérito perfecto simple Actions that finished in the past
Person English Conjugation
yo I demostré
you (informal) demostraste
él/ella/usted he/she/you (formal) demostró
nosotros we demostramos
vosotros you all (Spain) demostrasteis
ellos/ustedes they/you all demostraron
Él demostró su gran valor.
He demonstrated his great value.

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How to Conjugate "demostrar" in the Past (ongoing) Tense

Pretérito imperfecto Actions that were ongoing in the past
Person English Conjugation
yo I demostraba
you (informal) demostrabas
él/ella/usted he/she/you (formal) demostraba
nosotros we demostrábamos
vosotros you all (Spain) demostrabais
ellos/ustedes they/you all demostraban
Él demostraba mucha paciencia con los niños.
He used to show a lot of patience with kids.

How to Conjugate "demostrar" in the Future Tense

Futuro simple Actions that will happen
Person English Conjugation
yo I demostraré
you (informal) demostrarás
él/ella/usted he/she/you (formal) demostrará
nosotros we demostraremos
vosotros you all (Spain) demostraréis
ellos/ustedes they/you all demostrarán
Él demostrará la verdad pronto.
He will demonstrate the truth soon.

How to Conjugate "demostrar" in the Would (conditional) Tense

Condicional simple Hypothetical actions
Person English Conjugation
yo I demostraría
you (informal) demostrarías
él/ella/usted he/she/you (formal) demostraría
nosotros we demostraríamos
vosotros you all (Spain) demostraríais
ellos/ustedes they/you all demostrarían
Ella demostraría su fuerza pronto.
She would demonstrate her strength soon.

Frequently Asked Questions About "demostrar"

Is "demostrar" regular or irregular in Spanish?
"Demostrar" is an irregular Spanish verb, meaning its conjugation does not follow standard patterns and must be memorized individually.
What does "demostrar" mean in English?
The Spanish verb "demostrar" means "to demonstrate" in English.
How do you conjugate "demostrar" in the present tense?
In the present tense (Presente de indicativo): yo → demuestro, tú → demuestras, él/ella/usted → demuestra, nosotros → demostramos, vosotros → demostráis, ellos/ustedes → demuestran.
How many tenses does "demostrar" have in Spanish?
"Demostrar" is conjugated across 5 tenses in Spanish: Present, Past (completed), Past (ongoing), Future, Would (conditional).

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