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求讲解Ithasbeenfoundhardtodescribemanbyanadequatedefinition.Ithasbeenfoundhardtodescribemanbyanadequatedefinition.1、翻译2、Ithasbeen是什么用法?3、不定冠词+元音开头的形容+名词是用an

题目详情
求讲解It has been found hard to describe man by an adequate definition.
It has been found hard to describe man by an adequate definition.
1、翻译
2、It has been 是什么用法?
3、不定冠词+元音开头的形容+名词是用 an
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答案和解析
已被发现很难用恰当的定义来描述人.

It 指to describe man by an adequate definition,是形式主语,has been found是现在完成时的被动语态.
adequate这里首字母是元音æ,所以要加an