prevenir Future Conjugation
prevenir — to prevent
Prevenir uses the irregular stem 'prevendr-': prevendré, prevendrás, prevendrá.
prevenir Future Forms
When to Use the Future
Use the future to state what measures will stop something from happening or to make predictions about safety.
Notes on prevenir in the Future
The stem changes from the infinitive to 'prevendr-' (adding a 'd'). This is the same pattern as 'venir' and 'tener'.
Example Sentences
Esta nueva ley prevendrá el fraude.
This new law will prevent fraud.
él/ella/usted
Prevendremos cualquier riesgo innecesario.
We will prevent any unnecessary risk.
nosotros
Tus consejos me prevendrán de cometer errores.
Your advice will prevent me from making mistakes.
ellos/ellas/ustedes
Common Mistakes
Mistake: preveniré
Correct: prevendré
Why: You must use the irregular stem 'prevendr-' instead of the full infinitive.
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Related Tenses
Present
yo: prevengo
Prevenir is a stem-changing verb (e > ie) with a special 'yo' form: prevengo.
Preterite
yo: previne
Prevenir uses an irregular stem 'previn-' in the preterite: previne, previste, previno...
Imperfect
yo: prevenía
Prevenir is completely regular in the imperfect: prevenía, prevenías, prevenía...
Conditional
yo: prevendría
Prevenir uses the irregular stem 'prevendr-' plus -ía endings.
Present Subjunctive
yo: prevenga
The present subjunctive uses the 'preveng-' stem: prevenga, prevengas, prevenga.
Imperfect Subjunctive
yo: previniera
Based on the preterite stem: previniera, previnieras, previniera.
Affirmative Imperative
yo: prevén
The affirmative commands are: prevén (tú), prevenga (usted), prevengamos (nosotros).
Negative Imperative
yo: no prevengas
Negative commands use 'no' + present subjunctive: no prevengas, no prevenga.