I haven't seen him/it
No lo he visto desde hace un largo tiempo.
I haven't seen him in a long time.
I haven't seen him in months.
No lo he visto para nada últimamente.
I haven't seen him at all lately.
No lo he visto últimamente; dale mis saludos.
I haven’t seen him lately; give him my regards.
Estoy en Hollywood y aún no lo he visto.
I'm in Hollywood and I still haven't seen it.
— Mulholland Drive (2001)
No lo he visto desde que se mudó a Los Ángeles.
I haven't seen him since he moved to Los Angeles.
Tom llegó hace diez minutos, pero yo no lo he visto todavía.
Tom arrived ten minutes ago, but I haven’t seen him yet.
No lo he visto en todo el día.
I haven't seen him all day.
I haven’t seen him for ten years.
Últimamente no lo he visto mucho.
I haven't seen much of him lately.