acostarse Imperfect Conjugation
acostarse — to go to bed
The imperfect of acostarse is regular: me acostaba, te acostabas, se acostaba.
acostarse Imperfect Forms
When to Use the Imperfect
Use the imperfect to describe your bedtime habits in the past (e.g., 'When I was a kid...') or to set the scene when something else happened.
Notes on acostarse in the Imperfect
Acostarse is regular in the imperfect. There is no stem change, and it follows the standard -aba endings for -ar verbs.
Example Sentences
De niño, me acostaba a las ocho.
As a child, I used to go to bed at eight.
yo
Ellos se acostaban cuando sonó el teléfono.
They were going to bed when the phone rang.
ellos/ellas/ustedes
Nos acostábamos siempre a la misma hora.
We used to go to bed always at the same time.
nosotros
Common Mistakes
Mistake: Me acuestaba.
Correct: Me acostaba.
Why: The O>UE stem change only happens in the present tense, not in the imperfect.
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Related Tenses
Present
yo: me acuesto
Acostarse is a stem-changing (o > ue) reflexive verb: me acuesto, te acuestas, se acuesta.
Preterite
yo: me acosté
The preterite of acostarse is regular in its endings but requires reflexive pronouns: me acosté, te acostaste, se acostó.
Future
yo: me acostaré
The future tense is regular for acostarse: me acostaré, te acostarás, se acostará.
Conditional
yo: me acostaría
The conditional is regular for acostarse: me acostaría, te acostarías, se acostaría.
Present Subjunctive
yo: me acueste
The present subjunctive of acostarse features the O>UE stem change: me acueste, te acuestes, se acueste.
Imperfect Subjunctive
yo: me acostara
The imperfect subjunctive is based on the preterite stem: me acostara, te acostaras, se acostara.
Affirmative Imperative
yo: acuéstate
The imperative for acostarse attaches the pronoun to the end: acuéstate, acuéstese, acostémonos.
Negative Imperative
yo: no te acuestes
The negative imperative uses the present subjunctive: no te acuestes, no se acueste.