She sings much better than I do.

　　她的歌唱得比我好得多。

　　Will you sing a song to us?

　　你給我們唱支歌好嗎？

　　He's singing an octave lower than the rest of us.

　　他唱的比我們其他人都低八度。

　　It was a great privilege to hear her sing.

　　聽她唱歌真是三生有幸。

　　I was just walking along singing to myself.

　　我獨(dú)自唱著歌向前走著。