句中动词是has,两个主语The number of road accidents and the deaths为何动词用单数?The number of road accidents and the deaths arising from those accidents has increased over the past year.

问题描述:

句中动词是has,两个主语The number of road accidents and the deaths为何动词用单数?The number of road accidents and the deaths arising from those accidents has increased over the past year.

动词没有单数和复数之分。

主语是the number,所以用动词单数.