A Bad Impression

Six people were travelling in a compartment on a train. Five of them were quiet and well behaved, but the sixth was a rude young man who was causing a lot of trouble to the other passengers. 

At last this young man got out at a station with his two heavy bags. None of the other passengers helped him, but one of them waited until the rude young man was very far away and then opened the window and shouted to him, "You left something behind in the compartment!"(你把东西留在车厢里了!) Then he closed the window again. 

The young man truned around and hurried back with his two bags. He was very tired when he arrived, but he shouted through the window, "What did I leave behind?" 

As the train began to move again, the passenger who had called him back opened the window and said, "A very bad impression!"