sing的名词形式：singing。

n.唱歌;歌唱

v.唱(歌);演唱;鸣;啼;啼啭;呜呜作响;发嗖嗖声

例句：

He started his career in show business by playing the saxophone and singing.

他的演艺生涯是从吹奏萨克斯和唱歌开始的。

Singing is a nice way of unwinding.

唱歌是一种不错的减压方法。