我觉得你可以写年少无知,然后一直嘲笑别人,然后后来自己被嘲笑才明白滋味不好受,于是再也不嘲笑别人了.这样的立意比较深刻.第一段,你可以描述一下你是怎么嘲笑别人的,我提供一些语句：In the past,I always laughed at others when they made some silly mistakes.I always laughed at them loudly without considering their feelings.第二段,你可以描述自己是怎么被嘲笑的,一般被嘲笑都是干了一些比较搞笑的事情,我提供一个例子：However,one day,I made some silly mistakes.这里就写你的错误.I was then laughed at by my classmates whom I used to laugh at.I felt so sad and embarrassed.Now I finally understand how they feel when I laugh at them.第三段就写对你的启示和影响,说再也不能嘲笑别人,这样是不对的之类的话.我提供给你例子：Now I realize that it is incorrect to laugh at others.Instead we should help them with the difficulties they face.We should cooperate with each other rather than laughing at each other.