there be 后面加主语再加谓语,是什么形式呢?比如“有个人想吃饭”是不是 there is a man wants to eat?

肯定不能这么说啊，这是典型的病句，there be本身就有了谓语,want也是谓语，就多了，你加一个词就可以了，there is a man who wants to eat,这里there is a man是一个句子，who wants to eat后面又是一个句子，这里的who相当于后一个句子的主语，（恕我多说一句，你的英语还需要加强啊），这是个很典型的错误，要切记啊

there is a man 可以作为一个完整的句子来讲. wants to eat 则是对man的修饰.也可以说there is a man who wants to eat. 也就是定语从句把 who 给省略了.或者可以理解为there is a man. and he wants to eat.这是英语中比较例外的用法,要知道语法是用来更好的学习语言,但是还是有些语言现象无法用语法来解释.但是这种用法的确存在.

可以这么说。There is a man wants to eat的完整形式是There is a man who wants to eat 前者省略了who 。有一个语法现象是这样的，在定语从句中，当主语为there be 时，在定语从句中做主语的that who which 可以省略

一个简单句只能有一个谓语，所以你那个句子只能是定语从句，加who

应该是定语从句,There is a man who wants to eat