形容词
1. I made my first solo flight. 我第一次作了单人飞行。
副词
1. Lacking a pianist, I had to sing solo. 没有人用钢琴伴奏,我只好独自歌唱。
名词
1. She sang a solo. 她独唱了一支歌。
2. She played three solos. 她弹奏了三首独奏曲。