I think this is very important for us to have a talk with him .那个错了

问题描述:

I think this is very important for us to have a talk with him .那个错了
为什么这么改啊!

this改为it
因为这个句子原本应该是这样的:I think to have a talk with him is very important for us.
不定式做主语太长了,为了句子结构平衡只能用形式宾语it替代
而this不能做形式宾语