请根据下面的示信息,以My grandpa's unrual experience为题,用英语写

My grandfather used to tell me stories when I was little.I can still remember this one particular story of his unusual experience:When my grandpa was young,he had to go in town everyday to work construction jobs in order to feed his family.And one day on his way home,he heard someone screaming for help.He found a terrified young boy struggling in the water.Without a second thought,he immediately jumped into the water and saved the boy.The boy's father found them soon after.He was extremely grateful and wanted to give him some money in return for saving his son,but my grandpa declined his offer.I am very proud of him.