I will be there.I have never been there.中的beI will be there.I have never been there.中的be there 在句子成分上是什么?be在这里是介词还是动词?

问题描述:

I will be there.I have never been there.中的be
I will be there.I have never been there.中的be there 在句子成分上是什么?be在这里是介词还是动词?