alarmed

She was alarmed by the sudden noise in the middle of the night.

她被半夜突如其来的响声吓到了。

I am alarmed at the rising number of car accidents in this area.

我对该地区交通事故数量的上升感到担忧。

He felt alarmed when he saw the dark clouds gathering overhead.

他看到头顶乌云密布时感到惊慌。