impedir Present Subjunctive Conjugation
impedir — to prevent
Impedir changes 'e' to 'i' in all forms of the present subjunctive, including nosotros and vosotros.
impedir Present Subjunctive Forms
When to Use the Present Subjunctive
Use after verbs of influence, emotion, or doubt. It is very common after 'querer que' or 'es importante que'.
Notes on impedir in the Present Subjunctive
Unlike the present indicative, the 'nosotros' and 'vosotros' forms DO change the 'e' to 'i' here (impidamos, impidáis).
Example Sentences
No quiero que nada impida tu progreso.
I don't want anything to prevent your progress.
él/ella/usted
Es necesario que impidamos el desperdicio de agua.
It is necessary that we prevent water waste.
nosotros
Common Mistakes
Mistake: Que nosotros impedamos.
Correct: Que nosotros impidamos.
Why: In the subjunctive, -ir stem-changers that change e>i keep that change in the nosotros form.
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Related Tenses
Present
yo: impido
Impedir is an e>i stem-changing verb in all forms except nosotros and vosotros.
Preterite
yo: impedí
Impedir is irregular in the preterite, changing the 'e' to 'i' in the third-person forms: impidió and impidieron.
Imperfect
yo: impedía
Impedir is regular in the imperfect: impedía, impedías, impedía, impedíamos, impedíais, impedían.
Future
yo: impediré
Impedir is regular in the future: just add the endings to the full infinitive.
Conditional
yo: impediría
The conditional of impedir is regular: impediría, impedirías, impediría, impediríamos, impediríais, impedirían.
Imperfect Subjunctive
yo: impidiera
Based on the 'ellos' preterite, the stem is 'impidier-'.
Affirmative Imperative
yo: impide
Use 'impide' for tú and 'impida' for usted; remember the stem change.
Negative Imperative
yo: no impidas
The negative imperative uses the present subjunctive forms: no impidas, no impida, no impidamos.