I really don't know what I should say to her同义句转换I really don't know what to say to her 的原因是什麼

I really don't know what I should say to her同义句转换I really don't know what to say to her 的原因是什麼
I really don't know what I should say to her同义句转换I really don't know what to say to her 的原因是什麼

I really don't know what I should say to her同义句转换I really don't know what to say to her 的原因是什麼
很简单喽,前者是从句,后者是“疑问词+to do”结构,是单句

我真不知道该和她说些什么

因为：“不知道”和“说”的主语都是“I”