impedir Negative Imperative Conjugation
impedir — to prevent
The negative imperative uses the present subjunctive forms: no impidas, no impida, no impidamos.
impedir Negative Imperative Forms
When to Use the Negative Imperative
Use to tell someone NOT to block or prevent an action.
Notes on impedir in the Negative Imperative
Since it uses subjunctive forms, the 'i' stem change occurs in all persons.
Example Sentences
No impidas que tu hermano juegue.
Don't prevent your brother from playing.
tú
No impidamos el avance del proyecto.
Let's not prevent the project's progress.
nosotros
Common Mistakes
Mistake: No impedas.
Correct: No impidas.
Why: Negative commands must use the subjunctive stem change.
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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.
Present Subjunctive
yo: impida
Impedir changes 'e' to 'i' in all forms of the present subjunctive, including nosotros and vosotros.
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.