There is no need for us to discuss the problem again since it has already been settled.为什么用 there is 不用it has 或it is there has啊

问题描述:

There is no need for us to discuss the problem again since it has already been settled.
为什么用 there is 不用
it has 或
it is
there has啊

There is no need to do……这是固定句型,习惯搭配.
There is no use doing……也一样是习惯用语.