他是一位钢琴家，他正在弹钢琴。

He is pianist, he is playing the piano.

youdao

当我看到约翰的时候，他正在弹钢琴。

John was playing the piano when I saw him.

youdao

他正在弹钢琴。

He's playing the piano.

youdao

他正在学弹钢琴。

He is learning to play the piano.

《柯林斯英汉双解大词典》

他正在学习弹钢琴。

He is learning how to play the piano.

youdao

他听见他女儿正在她的房间里弹钢琴。

He heard his daughter playing piano in her room.

youdao

这个男孩喜欢弹钢琴。看！他正在音乐会上演奏。

The boy likes playing the piano. Look! He's giving a concert now.

youdao

他现在正在练习弹钢琴。

He is practising on the piano now.

youdao

他现在正在练习弹钢琴。

He is practising on the piano now.

youdao