be frightened of和be frightened at

be frightened of和be frightened at be frightened of be frightened to be frightened of get sth throngh和be scaned of,a frightened be frightened of doing与be frightened to do 有区别吗 be scared of/be afraid of/be frightened of 在用法、含义上有什么区别? be frightened后边应该如何搭配? What frightened us most of all was that not a sound could be be frightened to sth They look like they've been frightened frightened和frightening be frightened to do 和be afraid to do不是两个都是“害怕做某事吗”,还是有什么差别 afraid和frightened的不同