她会弹钢琴英语

she can not only sing ,but also dance.错了。。she can not only sing,but also play the piano.

Can she play piano？

She can play piano very well. or She can play piano and play it very well or She can play piano, and play very well 1楼错了,CAN后面的动词不能加S了

could she play the piano。

She can sing and play the piano.她既会唱歌,也会弹钢琴She can not only sing but (also) play the piano.或she can sing，she can play the piano as well 。