woher wusste er

how did he know

→ woher
phrase Rare #37,756
how did he know A question asking how a male person obtained information. Literally, woher means “from where,” but the natural English translation is usually “how did he know?”
GE: Woher wusste er, dass ich dort war?
EN: How did he know that I was there?

Woher wusste er von Genesis?

How did he know about Genesis?

— Star Trek II - Der Zorn des Khan (1982)

Woher wusste er dann, auf welche Weise sie erwürgt wurde?

How did he know how she was strangled?

— Memories of Murder (2003)

Woher wusste er vom Tattoo auf meinem Arm?

How did he know about the tattoo on my arm?

— Andhadhun (2018)

Woher wusste er, wo du wohnst?

How did he know where you live?

— Rom, offene Stadt (1945)

Woher wusste er dann, wem er den Brief geben sollte?

So how did he know who he was supposed to give the letter to?

— PK - Andere Sterne, andere Sitten (2014)