prevenir Conditional Conjugation
prevenir — to prevent
Prevenir uses the irregular stem 'prevendr-' plus -ía endings.
prevenir Conditional Forms
When to Use the Conditional
Use the conditional to talk about what would prevent a situation under certain circumstances or to make polite suggestions.
Notes on prevenir in the Conditional
Like the future tense, the conditional uses the irregular stem 'prevendr-'.
Example Sentences
Un poco de orden prevendría el caos.
A bit of order would prevent chaos.
él/ella/usted
¿Prevendrías el accidente si pudieras?
Would you prevent the accident if you could?
tú
Esas medidas prevendrían muchos gastos.
Those measures would prevent many expenses.
ellos/ellas/ustedes
Common Mistakes
Mistake: preveniría
Correct: prevendría
Why: The conditional requires the shortened irregular stem 'prevendr-'.
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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...
Future
yo: prevendré
Prevenir uses the irregular stem 'prevendr-': prevendré, prevendrás, prevendrá.
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.