there has been too much rain in china this year.为什么要用been?

there has been too much rain in china this year.为什么要用been?
there has been too much rain in china this year.为什么要用been?

there has been too much rain in china this year.为什么要用been?
这是现在完成时,固定要这么用.语法是：has/have been.由于主语是there所以后面要跟has.

状语是this year， 这是一段时间，要用现在完成时。
there is 要变成 there has been