One possible version

One morning, as Lihua was walking on the way to school, he threw a banana skin on the road. After a while, a little boy stepped on the skin and fell down. So he began to cry. At this time, a girl passed here. When she saw the boy, she lifted him up. Lihua felt sorry, and he thought it wrong to throw the skin here and there. At last, he picked up the skin and threw it into the dustbin.

题目分析：这是一篇给图画作文，根据图画叙述一个故事。结合所给材料，可知本文主要考查一般过去时，人称为单数三人称，注意主谓一致问题，句子结构主要为系表结构，注意一些常见句式的应用，比如：as Lihua was......； a little boy stepped ......； When she saw......及he thought it ......等句式的应用。写作中注意运用代词，注意多种句式交替运用。写作中注意叙述顺序，符合逻辑关系。

【亮点说明】本文结构紧凑，语言简练。开头介绍了李华在上学路上扔了一个香蕉皮，接下来介绍一个小男孩踩上了香蕉皮，一个女孩把他扶起来，最后李华感到抱歉，把香蕉皮扔进了垃圾箱里。此处用了on the way to ，stepped on，lifted him up. 及picked up 等这些词组的运用也让文章增色不少。