Use the present for current states, habits and actions. The subject can be omitted when the verb makes it clear.
Vosotros is informal plural you in Spain. Ustedes uses the ellos/ellas form and is the usual plural you in Latin America.
muestroI show (present)
muestrasyou show (present)
muestrahe/she shows (present)
mostramoswe show (present)
mostráisyou all (vosotros) show (present)
muestranthey show (present)
Mostrar in the preterite tense
Use the preterite for a completed event in the past, viewed as a whole.
mostréI showed (preterite)
mostrasteyou showed (preterite)
mostróhe/she showed (preterite)
mostramoswe showed (preterite)
mostrasteisyou all (vosotros) showed (preterite)
mostraronthey showed (preterite)
Mostrar in the imperfect tense
Use the imperfect for past habits, ongoing situations and background descriptions, without marking their endpoint.
mostrabaI used to show (imperfect)
mostrabasyou used to show (imperfect)
mostrabahe/she used to show (imperfect)
mostrábamoswe used to show (imperfect)
mostrabaisyou all (vosotros) used to show (imperfect)
mostrabanthey used to show (imperfect)
Mostrar in the future tense
Use the simple future for what will happen. Spanish also uses this tense for a guess about the present.
mostraréI will show (future)
mostrarásyou will show (future)
mostraráhe/she will show (future)
mostraremoswe will show (future)
mostraréisyou all (vosotros) will show (future)
mostraránthey will show (future)
Mostrar in the conditional tense
Use the conditional for what would happen, a polite request or a hypothetical situation.
mostraríaI would show (conditional)
mostraríasyou would show (conditional)
mostraríahe/she would show (conditional)
mostraríamoswe would show (conditional)
mostraríaisyou all (vosotros) would show (conditional)
mostraríanthey would show (conditional)
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Mostrar conjugation chart
All six persons. Blue, bold forms differ from regular endings, including spelling changes that preserve pronunciation.
Person
Present
Preterite
Imperfect
Future
Conditional
yo
muestro
mostré
mostraba
mostraré
mostraría
tú
muestras
mostraste
mostrabas
mostrarás
mostrarías
él / ella / usted
muestra
mostró
mostraba
mostrará
mostraría
nosotros / nosotras
mostramos
mostramos
mostrábamos
mostraremos
mostraríamos
vosotros / vosotras
mostráis
mostrasteis
mostrabais
mostraréis
mostraríais
ellos / ellas / ustedes
muestran
mostraron
mostraban
mostrarán
mostrarían
Mostrar in the present tense
Person
Spanish
English
yo
muestro
I show
tú
muestras
you show
él / ella / usted
muestra
he/she shows
nosotros / nosotras
mostramos
we show
vosotros / vosotras
mostráis
you all (vosotros) show
ellos / ellas / ustedes
muestran
they show
Mostrar in the preterite tense
Person
Spanish
English
yo
mostré
I showed
tú
mostraste
you showed
él / ella / usted
mostró
he/she showed
nosotros / nosotras
mostramos
we showed
vosotros / vosotras
mostrasteis
you all (vosotros) showed
ellos / ellas / ustedes
mostraron
they showed
Mostrar in the imperfect tense
Person
Spanish
English
yo
mostraba
I used to show
tú
mostrabas
you used to show
él / ella / usted
mostraba
he/she used to show
nosotros / nosotras
mostrábamos
we used to show
vosotros / vosotras
mostrabais
you all (vosotros) used to show
ellos / ellas / ustedes
mostraban
they used to show
Mostrar in the future tense
Person
Spanish
English
yo
mostraré
I will show
tú
mostrarás
you will show
él / ella / usted
mostrará
he/she will show
nosotros / nosotras
mostraremos
we will show
vosotros / vosotras
mostraréis
you all (vosotros) will show
ellos / ellas / ustedes
mostrarán
they will show
Mostrar in the conditional tense
Person
Spanish
English
yo
mostraría
I would show
tú
mostrarías
you would show
él / ella / usted
mostraría
he/she would show
nosotros / nosotras
mostraríamos
we would show
vosotros / vosotras
mostraríais
you all (vosotros) would show
ellos / ellas / ustedes
mostrarían
they would show
Is mostrar irregular?
Mostrar differs from the regular endings in the present. Changed forms include present: muestro, muestras, muestra. Highlighted forms include spelling changes that preserve pronunciation as well as irregular stems and endings.
Questions about mostrar
How do you conjugate mostrar in the present?
The present forms are muestro, muestras, muestra, mostramos, mostráis, muestran, in the order yo, tú, él/ella/usted, nosotros, vosotros and ellos/ellas/ustedes.
What is the preterite of mostrar?
mostré, mostraste, mostró, mostramos, mostrasteis, mostraron. For example, mostré means “I showed”.
Is mostrar irregular?
Mostrar differs from the regular endings in the present. Changed forms include present: muestro, muestras, muestra. Highlighted forms include spelling changes that preserve pronunciation as well as irregular stems and endings.
What is the difference between the preterite and imperfect of mostrar?
The preterite (mostré) presents a completed event; the imperfect (mostraba) gives a past habit or background situation. The English glosses are “I showed” and “I used to show”, but context determines the best translation.
What are the future and conditional of mostrar?
The yo forms are mostraré (“I will show”) and mostraría (“I would show”). The full charts above include every person.