happened, would happen
¿Te das cuenta de lo que ocurriera si tomaras eso?
Do you realize what would happen if you took that?
¿Por qué dejaste que ocurriera?
Why did you let it happen?
Intenté impedir que eso ocurriera.
I tried to prevent that from happening.
Esperábamos que ocurriera algo interesante.
We were hoping something interesting would happen.
Estuve esperando por toda la mañana para que esto ocurriera.
I was waiting all morning for this to happen.
Estamos encantados de que esto ocurriera.
We’re delighted that this happened.
Tom dijo que no permitiría que ocurriera otra vez.
Tom said he wouldn't let it happen again.
Hizo falta un pequeño accidente para que ocurriera.
It took a minor accident for this to happen.