Question

( ) why he did such a foolish thing,the boy hung his head and said nothing.

A:When asking B:When asked C:To be asked D:When he asked.
答案是B，我选的是A，不大明白为什么。求详解，谢谢

Answer 1

答案：B

翻译：当被问到为什么要做这么愚蠢事情的时候，这个男孩低下了头，什么也没说。

解释：答案B，asked 用的是过去分词，表示被动，也就是说asked与后面的the boy存在这被动的关系，即: the boy was asked (by someone)。答案A 现在分词表示主动。C 与句意不符。D 应该要改写成：When he was asked。所以正确答案是B。

祝您学习进步，更上一层楼！！！O(∩_∩)O ……

Answer 2

他是被问的，所以要用被动asked

Answer 3

主语省略的时候，前后主语是一致的情况 后半句主语是the boy, 前面的主要也是the boy , 完整的句子是 When the boy was asked why he did such a foolish thing = 省略句 When asked why he did.....
这里的asked是被动句中的过去分词 表被动，怎么可以用asking代替呢？