they can be quarrelling now are they

问题描述:

they can be quarrelling now are they
they can not be quarrelling now ,------they?
are?can?为什么

事实是,这是一个表示猜测的句子,就是说前面的那句话(they can not be qarrelling now)并非事实.在这种情况下,反义疑问句就要按照can后面的谓语来决定,就是be,由于主语是they,所以答案是are