写作思路：确立中心，围绕选材，确定重点，安排详略，选材时要注意紧紧围绕文章的中心思想，选择真实可信、新鲜有趣的材料，以使文章中心思想鲜明、深刻地表现出来，具体如下：
My life has changed a lot in the past three years. I was fat and short when I came to the middle school. At that time, I was interested in computer games and I spent most of time on it. My parents were worried about me.
过去三年里，我的生活发生了很大的.变化。最初来到学校的时候，我又矮又胖。那时，我沉迷于网络游戏，大部分时间都花在了玩电脑游戏上面。我的父母为此很担心。
Now, I like sports and I often play basketball with my classmates after school. So I become taller and stronger than before.
现在的我，喜欢运动，我常常放学后和同学们去打篮球。因此我变得又高又壮了。
I like reading too. I usually go to the library to read some interesting books. Good habits help me to study better and keep healthier. My parents and my teachers are both pleased with me.我也喜欢阅读。经常去图书馆读些有趣的书。良好的习惯助我学习一臂之力，身体也变得更加健康了。我的父母和老师都为我的改变而感到欣喜。
