跟我在，我会为你写一首歌。
Come away with me , and I will write you a song .
他们会为你写一首歌。
They 'll write songs about you .
我为你写了一首歌。
I wrote a song for you .
我将为你写一首愉悦的歌。
I'am going to write you a happy song .
为你写首歌