是I heard a beautiful song 还是Ilistened a beautiful song?

关键是同样解释为"听",但两字是有区别的.
listen 强调'听'动作:listen to the redio,listen to the Yellow River piano concerto
hear 强调'听'能力:I heard them singing beautiful songs.
比较容易理解的例句：
I listened but could not hear anything.
我注意听了,但没听见．
所以,你要表达我听见一首好听的歌,应是I heard a beautiful song．
如要表达去听一首好歌,就用listen to ,这是不及物动词,不能漏了to．