求问这个句子为什么要用介词for?别的行不?You are pretty brazen for a women who

求问这个句子为什么要用介词for?别的行不?You are pretty brazen for a women who just admitted.
求问这个句子为什么要用介词for?别的行不?
You are pretty brazen for a women who just admitted.
我自己换个表达
You admitted that you were a pretty brazen women.
对不?
用were还是are?还有其它问题么?
怎么没有人回答啊···额。我承认这句话有点那个啥，我是从绝望的主妇上看到的，没有别的意思，只是想学英语··