There is no need for me和there is no need for me 哪个对啊为什么?

题目

There is no need for me和there is no need for me 哪个对啊为什么?
为什么用there is no need 而不是there isn't need

答案

There is no need for me to do sth .为固定句型.无there isn't need for me to do sth.之说.