song的过去式和过去分词和现在分词

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

他唱的比我们其他人都低八度。

I was just walking along singing to myself.

我独自唱着歌向前走着。

Her voice doesn't really lend itself well to blues singing.

她的嗓子不是很适于唱布鲁斯歌曲。

The sound was not unlike that of birds singing.

这声音有点像鸟鸣。

The idea of the wind singing is a romantic conceit.

风儿在唱歌这一巧妙的比喻很有浪漫色彩。