be surprised at sth.和be surprised to do sth.
问题描述：
be surprised at sth.和be surprised to do sth.
答
be surprised at sth 对...感到惊奇
be surprised to do sth 惊奇地做某事
答
be surprised at sth对……感到很惊奇
He is surprised at dragons.
be surprised to do sth 惊奇地做某事
She was surprised to find she was lost.