except用在主语中，谓语动词的数不能采用就近原则，而是跟except前面的主语保持一致.
exceptprep.(用于所言不包括的人或事物前)除…之外
Our dresses were the same except mine was red.
我们的连衣裙是一样的，只是我的那件是红色。
Children under five are excepted from the survey.
五岁以下的儿童不在调查之列。
Many of the bodies were unidentifiable except by dental records.
许多尸体若不是靠牙科病历就无法辨认。
