今天我在上学的路上看见一个小孩领着一个盲人过马路，我认为盲人是这个小孩的父亲。过了马路后，盲人对他说：“谢谢你，小朋友。”这时我才明白原来是做好事的。
Today on my way to school， I saw a boy leading an old man to cross the road。 I thought he was the boy"s father。 But after crossing， the old man said:"Thank you， litfie boy。 "At that time I knew he did a good deed。