you don't know
Tú no sabes dónde está, ¿verdad, Plumas?
You don't know where it is, do you, Plumas?
— Paddington 2 (2017)
I know something you don't know.
Tú no sabes todo lo que yo hago.
You don't know everything I do.
Tú no sabes cómo es esa gente.
You don't know what those people are like.
— El castillo ambulante (2004)
You don't know the truth.
Tú no sabes por lo que yo he pasado.
You don't know what I've been through.
— मुन्ना भाई एम बी बी एस (2003)
Aparte tú no sabes qué es Atrapados en el espacio.
Besides, you don't know what Trapped in Space is.
— Roma (2018)
I know something you don't know.