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

问题描述:

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

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

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.