She can play piano very well.

她的钢琴弹的非常好。

I hope that I could play piano.

我希望我会弹钢琴。

I want to play piano by ear.

因为我想用耳朵弹琴。

He stopped to play piano two months ago.

两个月前他停止做某事而弹钢琴。

I could no more play piano than you.

我和你一样不会弹钢琴。