He speaks quickly,the tone of his voice so commanding that it silences everyone.这里后半句被省略掉的谓语是哪一个,作什么成分呢?
热心网友
后一句中省略了is, 在句子中做系动词。（两个句子间好象还省略了一个and），全句是：He speaks quickly, （and） the tone of his voice is so commanding that it silences everyone.他说话很快，语调很威严，大家一下子便鸦雀无声了。