had never seen
Nunca había visto a Tom actuar así antes.
I'd never seen Tom act like that before.
I've never seen this before.
Nunca había visto un arcoíris tan bonito.
I've never seen such a beautiful rainbow.
Nunca había visto un partido de rugby tan emocionante como el que vi ayer.
I've never seen a rugby match as exciting as the one I saw yesterday.
Nunca había visto una escena tan bella.
I had never seen such a beautiful scene.
Yo nunca había visto flores así.
I had never seen flowers like that before.
— Las noches de Cabiria (1957)
Nunca había visto a dos personas tan enamoradas como Tom y Mary.
I had never seen two people as in love as Tom and Mary.