这是动名词 因为as 作为介词 后面只能是名词或动名词 如果去掉being 后面的形容词是不能作介词宾语的 所以 【being】 either agglomerative (bottom-up) ordivisive (top-down)是动名词短语 作介词as的宾语注意 aggl...那么，下面这句话就是错的了：The word can be regarded as difficult.应改为：The word can be regarded as being difficult. ？但是我很少见到 ... as being ... 出现啊。。。你说上面 regard 这句话通常怎么说（通常就用being？）动名词 相当于抽象名词 表达是一种概念 不是具体的东西The word can be regarded as difficult.应改为：The word can be regarded asa difficult one 该句 是 固定句型 regard sth as sth与你前面的句子 意思是不一样的如 helping others is regarded as being kind to others