She fell into a (dead) faint at the death of her son. 句中的at是什么搭配?（为什么要用at）
问题描述：
She fell into a (dead) faint at the death of her son. 句中的at是什么搭配?（为什么要用at）
答
at the death of 固定短语 “因为 由于”