As living and working in a big city, public transport is my best choice of getting around. I can see many people offer seats to the seniors, chirdren, pregnant women and the disabled, but sometimes the embarrassed things would happened. One day, i saw a fat woman getting on the bus, then one man offered his seat to her as he thought she was pregnant, at the end both he and she felt embarrassed. And aother day the bus was very crowded, a middle-aged man with his ond hand handicaped got on the bus, there's no seat left for him. A kind-hearted girl stood up and wanted him to take the seat, but the man didn't take it, maybe he would rather be treated as the normal person. The man should have said something and showed his gratitudes for other's kindness and asked the girl to take the seat back, but he didn't say anything. At last there was a vacant seat left in a very very crowded bus. How embarrassed it is. No matter what, it is worthwhile of offering seat on bus, which can show a person's basic cultivation.