be surprised at sth.和be surprised to do sth.

be surprised at sth.和be surprised to do sth.
be surprised at sth.和be surprised to do sth.

be surprised at sth.和be surprised to do sth.
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.

be surprised at sth 对...感到惊奇
be surprised to do sth 惊奇地做某事