抒发情歌用英文怎么说

抒发情歌用英语可以翻译为 "sing a love song"。这个短语的来源可能源自人们在表达爱意或者传达爱的情感时唱的歌曲，因此被称为 "love song"。

下面是一些使用 "sing a love song" 的英文例句以及中文翻译：

He sang a love song to her on their anniversary. 他在纪念日时给她唱了一首情歌。
She sang a love song to him as a way to apologize. 她唱了一首情歌来道歉。
He wrote a love song for her, and then sang it to her on their wedding day. 他写了一首情歌给她，然后在婚礼当天给她唱。