He doesn't sing all that well.

　　他唱得并不特別好。

　　She has a good singing voice.

　　她有一副很好的歌喉。

　　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。