There is no need与it is no need有什么区别?哪些词前用there is,哪些词前用it is

There is no need是There be句型 这个可以有 但是没有it is a need/it is no need这种说法如果一定要用这种语序表达的话,可以改成it is not a necessity doing sth 也就是There is no need to do = it is not a necessity doing 有什么不明白的话可以继续问我 望采纳 谢谢..