mostrar Present Conjugation
mostrar — to show
Mostrar is an o > ue stem-changing verb in all forms except nosotros and vosotros.
mostrar Present Forms
When to Use the Present
Use the present tense to talk about what people are showing right now, or to describe characteristics and habits (e.g., 'This map shows the way').
Notes on mostrar in the Present
This is a 'boot verb'. The 'o' changes to 'ue' in the singular forms and the third-person plural.
Example Sentences
Te muestro el camino en el mapa.
I'll show you the way on the map.
yo
Nosotros mostramos los resultados mañana.
We are showing the results tomorrow.
nosotros
Las estadísticas muestran un cambio real.
The statistics show a real change.
ellos/ellas/ustedes
Common Mistakes
Mistake: Saying 'muestramos' for the we-form.
Correct: mostramos
Why: The stem change (o > ue) never happens in the nosotros or vosotros forms.
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Related Tenses
Preterite
yo: mostré
The preterite of mostrar is regular: mostré, mostraste, mostró, mostramos, mostrasteis, mostraron.
Imperfect
yo: mostraba
Mostrar is regular in the imperfect: mostraba, mostrabas, mostraba, mostrábamos, mostrabais, mostraban.
Future
yo: mostraré
The future of mostrar is regular: mostraré, mostrarás, mostrará, mostraremos, mostraréis, mostrarán.
Conditional
yo: mostraría
The conditional of mostrar is regular: mostraría, mostrarías, mostraría, mostraríamos, mostraríais, mostrarían.
Present Subjunctive
yo: muestre
The present subjunctive follows the o > ue stem change: muestre, muestres, muestre, mostremos, mostréis, muestren.
Imperfect Subjunctive
yo: mostrara
The imperfect subjunctive is regular: mostrara, mostraras, mostrara, mostráramos, mostrarais, mostraran.
Affirmative Imperative
yo: muestra
Affirmative commands use the stem change: muestra (tú), muestre (usted), mostremos (nosotros), mostrad (vosotros), muestren (ustedes).
Negative Imperative
yo: no muestres
Negative commands are based on the present subjunctive: no muestres, no muestre, no mostremos, no mostréis, no muestren.