It is no use telling him not to worry.为什么tell不加不定式啊

It is no use telling him about it It is no use telling him about it (为什么这里的to没有了,不是要It is no use to telling him about it么? it is no use telling him about it .请问about it在句中做何成份? It is no use telling him not to worry.为什么tell不加不定式啊 It is no use telling him about it.可以改为It is no use to tell him about it.意思有改变吗?It is no use telling him about it.可以改为It is no use to tell him about it.这两句的意思有改变吗?为什么? it is no use telling him not to do worried 这一句中的真正主语是什么?是telling 还是后面的一大句还有就是什么时候要动名词做主语 It's not good to get into the habit of telling lies.不是it is no use doing sth?It's no good doing? It is no use rriging There is no need telling him about it. 英语语法 动名词.It's no use telling him about.tell为什么用动名词. It`s no use you telling me not to worry.为什么不能用tell? 把这句话进行剖析“It's no use telling him not to worry.” It is no use saying so it is no use的用法 It is no use doing sth与It is no use to do sth的区别. it is no use to do 与it is no use doing 有什么区别? it's no use 后面的用法,可以加one's doing形式吗it's no use your telling me not to do .这样 There is no use to do与 It is no use doing的区别There is no use to doIt is no use doing 是这么用吗? I think it no use与 I think it is no use翻译有什么不同