tienes que saber

you have to know

→ tener
phrase Uncommon #10,848
you have to know Used to express that knowing something is necessary or important.
SP: Antes de empezar, tienes que saber las reglas.
EN: Before you start, you have to know the rules.

Tienes que saber eso.

You need to know that.

Tienes que saber todo.

You have to know everything.

— Reservoir Dogs (1992)

Tienes que saber que Hermann no está aquí.

You have to know that Hermann isn’t here.

— El hundimiento (2004)

Primero tienes que saber el ritmo.

First you need to know the rhythm.

— Picnic (1955)

Tienes que saber si hay agua caliente.

You have to find out if there’s hot water.

— Reservoir Dogs (1992)

Hay algo que tienes que saber.

There's something you need to know.

Tienes que saber lo que estás haciendo.

You have to know what you're doing.

Tienes que saber.

You have to know.

— Incendies (2010)

Cuando haces mucho, tienes que saber como manejarlo.

When you do a lot, you have to know how to handle it.

Eso es todo lo que tienes que saber.

That's all you need to know.

Tienes que saber que estoy enamorado de María.

You have to know that I’m in love with María.