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[復習必備 | 海量免費學習視頻資源盡在“學而思輕課APP”>>>點擊了解]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.

　　我有一個姐姐，名字叫李欣。她今天十五歲了。和其他許多中學生一樣，她有一頭烏黑的長發(fā)，經(jīng)常扎成馬尾。但是，她有一項特長，那就是她彈得一手好鋼琴。姐姐從五歲開始學習鋼琴，她很喜歡鋼琴，可以練習一整天。她曾說過，彈鋼琴的時候她感覺很快樂。到目前為止，她已經(jīng)在很多地方表演過了，是一位小有名氣的鋼琴演奏者。我為我的姐姐感到自豪。