One day,a Frenchman(法国人) goes to see his friend.
His friend is an Englishman. The Englishman has a big dog. The dog barks(叫) at the Frenchman.
The Frenchman is scared(害怕的).
“Dont be afraid,” the Englishman says. “Do you know:Barking dogs dont bite(愛叫的狗不咬人)?”
“Oh,yes,”answers the Frenchman. “I know it,and you know it. But ... the dog ... does he know it?”