I have a sister. Her name is Li Xin. She is fifteen years old now. Like many other middle school students， she has black long hair and always ties them up. But she has a specialty that she can play piano very well. She began to learn the piano at the age of five. She likes pia[复习必备 | 海量免费学习视频资源尽在“学而思轻课APP”>>>点击了解]no very much， so she can practice it all the day. She once said that she is happy when playing piano. Until now， she has performed in many places. She is a piano player of some renown. I am proud of her.
我有一个姐姐，名字叫李欣。她今天十五岁了。和其他许多中学生一样，她有一头乌黑的长发，经常扎成马尾。但是，她有一项特长，那就是她弹得一手好钢琴。姐姐从五岁开始学习钢琴，她很喜欢钢琴，可以练习一整天。她曾说过，弹钢琴的时候她感觉很快乐。到目前为止，她已经在很多地方表演过了，是一位小有名气的钢琴演奏者。我为我的姐姐感到自豪。