it is adj to do 和it is adj do一样吗?有没有it is adj do?好像是两个句型的结构上

it is adj to do 和it is adj do一样吗?有没有it is adj do?好像是两个句型的结构上不同把?解释一下啊!

没有it is adj do.
It is + no use,no good (fun,a great pleasure,a waste of time,a bore...)等名词+doing sth.
It is no use crying.哭没有用.It is no good objecting.反对也没有用.
It is a great fun playing football．打篮球很有趣.
It is a waste of time trying to explain．设法解释是浪费时间.
It is + useless (nice,good,interesting,expensive等形容词)+ doing sth．
It is useless speaking.光说没用.
It is nice seeing you again．真高兴又遇到了你.
It is good playing chess after supper．晚饭后弈棋挺好.
It is expensive running this car．开这种小车是浪费