This lady was genuinely surprised at what happened to her pet. [+ at/by]

这位女士对发生在自己宠物身上的事感到非常惊讶。

Chang seemed surprised to find the big living-room empty.

张看到偌大的客厅里空无一人，似乎很惊讶。

Reading the ideas of the so-called experts, I am not surprised the country is in such a state.

读了这些所谓的专家的想法后，我对于该国的这种现状一点也不感到奇怪了。