mostrar Negative Imperative Conjugation
mostrar — to show
Negative commands are based on the present subjunctive: no muestres, no muestre, no mostremos, no mostréis, no muestren.
mostrar Negative Imperative Forms
When to Use the Negative Imperative
Use this to tell someone NOT to show something, such as 'Don't show him the surprise yet.'
Notes on mostrar in the Negative Imperative
The stem change (o > ue) applies to all forms except nosotros and vosotros, just like the present subjunctive.
Example Sentences
No le muestres el regalo todavía.
Don't show him the gift yet.
tú
No muestren debilidad ante el enemigo.
Don't show weakness before the enemy.
No mostréis las cartas todavía.
Don't show (guys) the cards yet.
vosotros
Common Mistakes
Mistake: Using 'no muestra' instead of 'no muestres'.
Correct: no muestres
Why: Negative commands must use the subjunctive forms, not the indicative.
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Related Tenses
Present
yo: muestro
Mostrar is an o > ue stem-changing verb in all forms except nosotros and vosotros.
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).