She sings much better than I do.
她的歌唱得比我好得多。
Will you sing a song to us?
你给我们唱支歌好吗？
He's singing an octave lower than the rest of us.
他唱的比我们其他人都低八度。
It was a great privilege to hear her sing.
听她唱歌真是三生有幸。
I was just walking along singing to myself.
我独自唱着歌向前走着。