Mostrar means "to show" and is an o → ue stem-changing -ar verb. Like recordar, contar, and encontrar, its o becomes ue in the four "boot" forms of the present indicative (yo, tú, él, ellos) and in the corresponding forms of the present subjunctive. The nosotros form keeps the plain o.
In Latin America, mostrar is the everyday verb for showing or displaying something — a photo, a document, a gesture, a feeling. It's also common in the reflexive form mostrarse, meaning "to appear" or "to come across as": se mostró muy amable.
Present Indicative
| Subject | Form |
|---|---|
| yo | muestro |
| tú | muestras |
| él / ella / usted | muestra |
| nosotros / nosotras | mostramos |
| ellos / ellas / ustedes | muestran |
La gráfica muestra un aumento claro.
The chart shows a clear increase.
Preterite
| Subject | Form |
|---|---|
| yo | mostré |
| tú | mostraste |
| él / ella / usted | mostró |
| nosotros / nosotras | mostramos |
| ellos / ellas / ustedes | mostraron |
The preterite is fully regular — no stem change. This is true of all -ar and -er stem-changing verbs.
Nos mostró su colección de monedas antiguas.
He showed us his collection of old coins.
Imperfect
| Subject | Form |
|---|---|
| yo | mostraba |
| tú | mostrabas |
| él / ella / usted | mostraba |
| nosotros / nosotras | mostrábamos |
| ellos / ellas / ustedes | mostraban |
Siempre me mostraba su jardín cuando la visitaba.
Future
| Subject | Form |
|---|---|
| yo | mostraré |
| tú | mostrarás |
| él / ella / usted | mostrará |
| nosotros / nosotras | mostraremos |
| ellos / ellas / ustedes | mostrarán |
Mañana te mostraré la casa nueva.
Tomorrow I'll show you the new house.
Conditional
| Subject | Form |
|---|---|
| yo | mostraría |
| tú | mostrarías |
| él / ella / usted | mostraría |
| nosotros / nosotras | mostraríamos |
| ellos / ellas / ustedes | mostrarían |
Yo te mostraría el camino si pudiera.
I would show you the way if I could.
Present Subjunctive
| Subject | Form |
|---|---|
| yo | muestre |
| tú | muestres |
| él / ella / usted | muestre |
| nosotros / nosotras | mostremos |
| ellos / ellas / ustedes | muestren |
Same pattern as the present indicative: ue everywhere except nosotros.
Quiero que me muestres tu trabajo.
I want you to show me your work.
Imperfect Subjunctive (-ra forms)
| Subject | Form |
|---|---|
| yo | mostrara |
| tú | mostraras |
| él / ella / usted | mostrara |
| nosotros / nosotras | mostráramos |
| ellos / ellas / ustedes | mostraran |
Imperative
| Person | Form |
|---|---|
| tú (affirmative) | muestra |
| tú (negative) | no muestres |
| usted | muestre |
| nosotros | mostremos |
| ustedes | muestren |
Notice the written accent on muéstrame: attaching a pronoun to the affirmative command pulls the stress backward, so an accent is needed to preserve the original pronunciation.
Non-Finite Forms
- Infinitive: mostrar
- Gerund: mostrando
- Past participle: mostrado
Common Uses
Mostrar is typically followed by a direct object (the thing shown) and an indirect object (the person shown to): le mostré la carta a Juan. The reflexive mostrarse is used to describe how someone appears or acts: se mostró preocupado ("he seemed worried").
Se mostró muy amable con los invitados.
He was very friendly with the guests.
El termómetro muestra 38 grados.
The thermometer shows 38 degrees.
Related Topics
- Recordar: Full ConjugationA2 — Complete conjugation of recordar — to remember, an o→ue stem-changing verb
- Contar: Full ConjugationA2 — Complete conjugation of the verb contar with its o→ue stem change
- Ver: Full ConjugationA1 — Complete conjugation of the verb ver across all major tenses and moods