du weinst

you are crying

→ du
phrase Uncommon #19,506
you are crying Can also mean “you cry,” depending on context. “Du” is the informal singular form of “you.”
GE: Weißt du, warum du weinst?
EN: Do you know why you are crying?

Du weinst auch?

Are you crying too?

Du weinst doch.

You're crying, aren't you?

— Die Nächte der Cabiria (1957)

Du weinst wie ein Baby.

You cry like a baby.

— La La Land (2016)

Weine, und du weinst allein.

Cry, and you cry alone.

— Oldboy (2003)

Du weinst doch jetzt.

You're crying now.

— Mystic River (2003)

Du bist nicht hübsch, wenn du weinst.

You're not pretty when you cry.

— Indian Love Story - Kal Ho Naa Ho (2003)

Du weinst ja.

You’re crying.

— Elephant (2003)

Weißt du, warum du weinst?

Do you know why you're crying?

— Der Himmel über Berlin (1987)