It was a cold winter morning,snowing.There were some kids skiing on the freezed lake happily.At that time,Li Hua dropped in the water without noticing the hole on the ice.A soldier happened to pass by and saw the whole event happening.He stopped his bike ,jumpped into the water proumptly and helped Li Hua out of danger,and then sent him into the hospital.After that,he hurriedly went away.
应该没什么语法问题,不过文笔可能差了点．我就奇怪其他几个孩子后来去哪儿了．