asegurarse de

to make sure of

Verbs with Prepositions

Notes & Usage:

Verb + preposition (or no preposition)

Asegúrate de cerrar la puerta con llave.

Make sure to lock the door.

—¿Confirmaste la reserva? —Sí, me aseguré de todo dos veces.

—Did you confirm the reservation? —Yes, I made sure of everything twice.

Se aseguró de que todos entendieran las instrucciones.

He made sure that everyone understood the instructions.

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