1) She is singing

她在唱歌。
2) I am listining to her sweet song.

我正在听她唱歌。
3) She is singing a Xizang folk song.

她在唱西藏民歌。
4) She is singing in practice.

她在练习唱歌。
5) She is listening to someone singing.

她在听人唱歌。
6) I hear her singing.

我听见她在唱歌
参考词条