intervenir Present Conjugation
intervenir — to intervene
Intervenir is irregular in the present, featuring a 'g' in the 'yo' form and an 'ie' stem change in others.
intervenir Present Forms
When to Use the Present
Use this for current habits, ongoing participation, or general facts about how someone mediates or gets involved in matters.
Notes on intervenir in the Present
It follows the pattern of 'venir'. The first person is 'intervengo'. For tú, él, and ellos, the 'e' changes to 'ie' (intervienes). Nosotros and vosotros are regular.
Example Sentences
Yo intervengo solo cuando es estrictamente necesario.
I intervene only when it is strictly necessary.
yo
Mi abuelo siempre interviene en nuestras conversaciones.
My grandfather always joins in our conversations.
él/ella/usted
¿Por qué no intervienes tú en el debate?
Why don't you participate in the debate?
tú
Common Mistakes
Mistake: Saying 'interveno' for the yo form.
Correct: intervengo
Why: Intervenir follows 'venir', which adds a 'g' in the first person singular.
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Related Tenses
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.
Negative Imperative
yo: no intervengas
The negative imperative always uses the present subjunctive forms with 'no'.