开始弹钢琴英语

whendidyoursisterplaythepiano?应该是，老师说的

LZ您好！我认为应该是 Your sister is when to start playing the piano How long has your sister plays piano 也是可以的，意为“你妹妹钢琴弹了多久”，您就可以根据对方的回答来推测了，第二个的话就是拐了个弯还望能对您有所帮助！

play the piano

Play the piano第三人称单数play加s过去式play加ed进行时play加ing

弹钢琴的英文

play pianoShe began to play piano after finishing her homework. 做完作业后，她开始弹钢琴。