sing的现在分词是singing,n.是唱歌;歌唱v.是唱(歌);演唱;鸣;啼;啼啭;呜呜作响;发嗖嗖声.She's having singing lessons. 她在上声乐课。I awoke to the sound of birds singing. 我在鸟鸣声中醒来。Birds were already singing in the garden. 小鸟已经在花园里歌唱了。