从语法上讲,在这里用plays有问题,应该:
Do you know if she is playing the piano?是否正在弹或 .
Do you know if she plays the piano?是否会弹 或
Do you know if she has played the piano 是否弹过?
从语法上讲,在这里用plays有问题,应该:
Do you know if she is playing the piano?是否正在弹或 .
Do you know if she plays the piano?是否会弹 或
Do you know if she has played the piano 是否弹过?