you understand
Ihr versteht diesen Satz nicht, oder?
You don't understand this sentence, do you?
You don't understand me.
Oh, you don't understand.
— Harry Potter und der Orden des Phönix (2007)
You know your stuff.
You don't understand anything.
Leute, ihr versteht das nicht.
Guys, you don't understand this.
Ihr versteht aber auch gar nichts, oder?
You really don't understand anything at all, do you?