In fact,legend has it that George Washington himself gave her the special military title.这是什么语法现象,头几个单词是短语么?

问题描述:

In fact,legend has it that George Washington himself gave her the special military title.
这是什么语法现象,头几个单词是短语么?

legend has it that 等同于 according to legend

legend has it that ...
是一个句型,表示 "有这样的传说...","据传说..."
it是形式宾语,替代其后的宾语从句"that George Washington himself gave her the special military title."
类似的句型还有:rumor has it that...,"根据谣传","传说".