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A cartoon character firmly pressing down on a large, securely fastened padlock on a sturdy wooden storage chest, indicating they are verifying its security.

asegurarse Preterite Conjugation

asegurarseto make sure

A2regular -ar★★★★★
Quick answer:

Completed past actions: me aseguré, te aseguraste, se aseguró.

asegurarse Preterite Forms

yome aseguré
te aseguraste
él/ella/ustedse aseguró
nosotrosnos aseguramos
vosotrosos asegurasteis
ellos/ellas/ustedesse aseguraron

When to Use the Preterite

Use the preterite tense for actions that were completed at a specific point in the past. For 'asegurarse', it means 'I made sure', 'she checked', or 'we ensured' at a definite time. It's about the action finishing.

Notes on asegurarse in the Preterite

Asegurarse is regular in the preterite. The endings are: -é, -aste, -ó, -amos, -asteis, -aron. Add these to the infinitive stem 'asegura-'. Remember the reflexive pronoun must come before the conjugated verb.

Example Sentences

  • Me aseguré de que la puerta estuviera cerrada con llave.

    I made sure the door was locked.

    yo

  • ¿Te aseguraste de que tu hermano te entendiera?

    Did you make sure your brother understood you?

  • Él se aseguró de que el paquete llegara a tiempo.

    He made sure the package arrived on time.

    él/ella/usted

  • Nos aseguramos de que todos tuvieran asiento.

    We made sure everyone had a seat.

    nosotros

  • Ellos se aseguraron de no dejar nada atrás.

    They made sure to leave nothing behind.

    ellos/ellas/ustedes

Common Mistakes

  • Mistake: Using the imperfect instead of preterite: 'Me aseguraba de que llegara.'

    Correct: Me aseguré de que llegara.

    Why: The preterite is used for a completed action ('I made sure'), whereas the imperfect implies it was ongoing or habitual ('I used to make sure').

  • Mistake: Forgetting the reflexive pronoun: 'Aseguré que todo estaba bien.'

    Correct: Me aseguré de que todo estaba bien.

    Why: Asegurarse is reflexive; the pronoun is necessary.

Master Spanish verbs in context

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Related Tenses