Question

there is no need doing和there is no need to do怎么用？

Answer 1

there is no need to do sth没有必要去做某事，无“there is no need doing”的表达方式

相关例句：

1.There is no need to go so early.
何必去那么早。
2.There is no need to immerge further into this topic.
没必要再深钻这个题目了。

此外，还有表达方式：
there is no need for
如：

Everything is fine with me; there is no need for you to be concerned.
这里一切都好， 不用牵挂。

Answer 2

表示“干……没必要”。如： There is no need going there. 去那里没必要。 There is no need to do sth. 表示“（客观上）没有必要做某事”。如： 没有必要使问题复杂化。