Du musst jetzt sofort kommen!
You have to come around now!
The man spoke four languages so fluently he was mistaken for a native in each. But he was not a linguist. He was a polyglot. "One is an academic, one is a Swiss waiter," he remarked.
Faut faire gaffe quand on traverse, à ne pas se faire écraser par un vélo. Be careful crossing, or you'll be run over by a bike.