be shocked at 对…感到震惊:They were shocked at how the children had been treated.孩子们受到的对待令他们深感震惊.be shocked by 为… 所震惊:She was visibly shocked by the conditions she witnessed in th...用at 强调“状态”，be shocked 是系表结构用by 强调“动作”， be shocked 是被动语态