acostarse Imperfect Subjunctive Conjugation
acostarse — to go to bed
The imperfect subjunctive is based on the preterite stem: me acostara, te acostaras, se acostara.
acostarse Imperfect Subjunctive Forms
When to Use the Imperfect Subjunctive
Use this for hypothetical situations (e.g., 'If I went to bed earlier...') or after past-tense expressions of emotion or will.
Notes on acostarse in the Imperfect Subjunctive
This tense uses the preterite 'acostaron' as a base. Since the preterite doesn't have a stem change, the imperfect subjunctive doesn't have one either.
Example Sentences
Si me acostara más temprano, no estaría tan cansado.
If I went to bed earlier, I wouldn't be so tired.
yo
Ella quería que nos acostáramos pronto.
She wanted us to go to bed soon.
nosotros
Si te acostaras ahora, dormirías ocho horas.
If you went to bed now, you would sleep eight hours.
tú
Common Mistakes
Mistake: Si me acuestara...
Correct: Si me acostara...
Why: Learners often incorrectly carry the present-tense stem change into the subjunctive past.
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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.
Imperfect
yo: me acostaba
The imperfect of acostarse is regular: me acostaba, te acostabas, se acostaba.
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.
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.