this isn’t
Éste no es como el mundo humano.
This is not like the human world.
— Nausicaä del valle del viento (1984)
Éste no es el mundo en el que quiero vivir.
This is not the world I want to live in.
Éste no es nuestro coche, es el suyo.
This is not our car, it's theirs.
This isn't money.
No, this is not my car.
This one isn't yours.