there has been.为什么要加been

如题所述

推荐答案 2016-03-15

这应得结合具体句子解答，不可一概而论。
不过若在完成时中过去分词前出现词 been，通常说明该句的主语与与谓语动词间存在动宾关系，所以表示为被动语态。不过后也可能为动词的现在分词，has/have been doing sth. 表示该动作从某一时持续进行着，时间状语常为段时间。
如：She has been reading newspaper since I came here.

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