intervenir Negative Imperative Conjugation
intervenir — to intervene
The negative imperative always uses the present subjunctive forms with 'no'.
intervenir Negative Imperative Forms
When to Use the Negative Imperative
Use this to tell someone NOT to interfere or get involved in a specific situation.
Notes on intervenir in the Negative Imperative
Uses the 'interveng-' stem for all persons, just like the present subjunctive.
Example Sentences
No intervengas en mis asuntos.
Don't interfere in my business.
tú
No intervenga usted sin autorización.
Do not intervene without authorization.
No intervengáis en la discusión de los niños.
Don't (you all) intervene in the children's argument.
vosotros
Common Mistakes
Mistake: Saying 'no intervén'.
Correct: no intervengas
Why: The short command form 'intervén' is only for affirmative commands; negative commands must use the subjunctive form.
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Related Tenses
Present
yo: intervengo
Intervenir is irregular in the present, featuring a 'g' in the 'yo' form and an 'ie' stem change in others.
Preterite
yo: intervine
Intervenir is highly irregular in the preterite, following the 'u-stem' pattern (intervin-).
Imperfect
yo: intervenía
The imperfect of intervenir is regular: intervenía, intervenías, intervenía...
Future
yo: intervendré
The future tense of intervenir uses the irregular stem 'intervendr-'.
Conditional
yo: intervendría
The conditional uses the irregular stem 'intervendr-' followed by regular -ía endings.
Present Subjunctive
yo: intervenga
Intervenir is irregular in the present subjunctive, using the stem 'interveng-' for all persons.
Imperfect Subjunctive
yo: interviniera
The imperfect subjunctive uses the irregular stem 'intervinier-' for all forms.
Affirmative Imperative
yo: intervén
The imperative uses the short form 'intervén' for the informal 'tú' command.