you have to know
You need to know that.
Tienes que saber que Hermann no está aquí.
You have to know that Hermann isn’t here.
— El hundimiento (2004)
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.
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.