advertir Imperfect Conjugation
advertir — to warn
The imperfect of advertir is regular: advertía, advertías, advertía, advertíamos, advertíais, advertían.
advertir Imperfect Forms
When to Use the Imperfect
Use this for repeated past warnings (e.g., 'my mom used to warn me') or to describe a state of noticing something over a period of time.
Notes on advertir in the Imperfect
Advertir is completely regular in the imperfect. All -ir verbs use the -ía endings in this tense.
Example Sentences
Mi abuelo siempre me advertía sobre los desconocidos.
My grandfather always used to warn me about strangers.
él/ella/usted
Advertíamos que algo no iba bien en la oficina.
We were noticing that something wasn't going well in the office.
nosotros
Las señales advertían del riesgo de incendio.
The signs warned of the fire risk.
ellos/ellas/ustedes
Common Mistakes
Mistake: Using 'advertaba'.
Correct: advertía
Why: The -aba ending is only for -ar verbs. -Ir verbs like advertir use -ía.
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Related Tenses
Present
yo: advierto
In the present, advertir has an e→ie stem change in all forms except nosotros and vosotros.
Preterite
yo: advertí
The preterite of advertir features a stem change (e→i) only in the third-person forms: advirtió and advirtieron.
Future
yo: advertiré
The future tense of advertir is entirely regular, using the full infinitive as the stem.
Conditional
yo: advertiría
The conditional of advertir is regular, formed by adding -ía endings to the full infinitive.
Present Subjunctive
yo: advierta
The present subjunctive of advertir changes e→ie in the boot and e→i in the nosotros/vosotros forms.
Imperfect Subjunctive
yo: advirtiera
The imperfect subjunctive uses the 'advirt-' stem for all forms: advirtiera, advirtieras, etc.
Affirmative Imperative
yo: advierte
The imperative uses 'advierte' for informal commands and 'advierta/n' for formal ones.
Negative Imperative
yo: no adviertas
The negative imperative always uses the present subjunctive forms: no adviertas, no advierta, etc.