Mary eloped with Robert, fool that she was. 请问"fool that she was

我来回答。是强调句结构的省略形式。完整的句子是：It was a real fool that she (==Mary) was.非强调句的语序是：She was a real fool. 强调句结构：It is / was -- -- - - that -- - -- .1 把a real fool放在that前面，把she was放在that后面。2 再把次要部分去掉，就...