It is useless doing 或to do 有什么区别

It is useless to do?doing? It is useless doing 或to do 有什么区别 it is no useless to do=it is no use doing it is useless 后跟动名词还是不定式 whatever ,it is useless 的翻译 it is useless后面加什么? i found it useless doing还是to do It's useless后面是doing还是to do? I don't think it is any use discussing this matter any further.中文是?It is no use/not any use/useless doing sth 这个意思是? think 是不是及物动词,那么句子''I think it is useless''中''it is useless'' 充当什么成分谢谢了, what is it doing what is it doing it is about doing how is it doing it is adj + doing or to do?会的请帮解答Q1.It is useful/useless/nice/good/interesting/expensive (to do / doing?)这种的it is 加 adj 後面的到底用哪种正确?似乎网上也很多人搞不太清楚有些说只能用 to do sth有些说只 It is useless to c___,don't talk about it any more , (1/2)____that the train is gone,it is useless to wait. A Seen B see is+形容词+doing或to do的句型,形容词是哪几个特殊的后面跟doing,哪几个跟to do,这个中学的时候那如果是I find it 后面跟 no use a waste of time useless no good 等等这几个词组的时候是不是也是跟doing 另