难得理解的一道英语选择题

题目

难得理解的一道英语选择题
（ ） for the terrible accident,as the public thought,the mayor felt nevous and at a loss what to do. A.Being to blame B. Being to be blamed C. To blame D. Having blamed 为什么选择A ?

答案

blame直接表示被动,be to blame 为固定搭配,即表示"受责备"
没有be to be blame 的这种用法.