requerir Imperfect Conjugation
requerir — to require
The imperfect of requerir is regular: requería, requerías, requería...
requerir Imperfect Forms
When to Use the Imperfect
Use this for ongoing needs in the past, describing background requirements, or habitual requests.
Notes on requerir in the Imperfect
Requerir is regular in the imperfect. All -ir verbs use -ía endings in this tense.
Example Sentences
Antes, el proceso requería mucho papel.
Before, the process used to require a lot of paper.
él/ella/usted
Nosotros requeríamos permiso para salir.
We used to require permission to go out.
nosotros
Las plantas requerían agua todos los días.
The plants required water every day.
ellos/ellas/ustedes
Common Mistakes
Mistake: Forgetting the accent on the 'í'.
Correct: All forms (requería, requeríamos, etc.) must have an accent on the 'i'.
Why: The accent is mandatory for all -er and -ir verbs in the imperfect to mark the correct syllable stress.
Master Spanish verbs in context
Memorizing tables only gets you so far. Read 200+ illustrated and narrated Spanish stories to see verbs like 'requerir' used naturally — in the tenses you're learning.
Related Tenses
Present
yo: requiero
Requerir follows an e to ie stem change in all forms except nosotros and vosotros.
Preterite
yo: requerí
Requerir is a 'slipper verb', changing e to i only in the third-person forms (requirió, requirieron).
Future
yo: requeriré
The future tense of requerir is regular: requeriré, requerirás, requerirá...
Conditional
yo: requeriría
The conditional of requerir is regular: requeriría, requerirías, requeriría...
Present Subjunctive
yo: requiera
Requerir changes its stem from e to ie (requiera) and e to i in the nosotros/vosotros forms (requiramos).
Imperfect Subjunctive
yo: requiriera
The imperfect subjunctive of requerir uses the 'requir-' stem derived from the preterite third person.
Affirmative Imperative
yo: requiere
The imperative uses 'requiere' for tú and 'requiera(n)' for formal commands.
Negative Imperative
yo: no requieras
The negative imperative uses 'no' plus the present subjunctive forms.