Our homework has been finished,we went to play football.改成独立主格结构是Our homework having been finished,we went to play football.这里用了现在分词的完成式的被动语态，但是这句话用了having是主动结构而后面又用了 having been written是被动结构，用了主动又用了被动不是很予盾吗？前后都不配搭。
It being Sunday ,they had no classes.这里的being 用了主动结构，是根据哪里的思路用主动结构的？为什么要用being？

“Our homework has been finished,we went to play football.改成独立主格结构是Our homework having been finished,we went to play football.这里用了现在分词的完成式的被动语态，但是这句话用了having是主动结构而后面又用了 having been written是被动结构，用了主动又用了被动不是很予盾吗？前后都不配搭。”

没有不搭配啊。作业被做，用被动，这点没有异议吧？翻译为：Our homework was finished.加上后面一句We went to play football.两句放在一起你是否觉得无法体现时间先后，到底是先做完作业还是先踢球了呢？所以其中一句要改成have done的形式。

Our homework had been finished. + We went to play football.再在此基础上改成独立主格，让它成为一句话，那么就只能有一个谓语。因为后面的比较重要，所以把前面的had been finished改成非谓语形式，就成了having been finished。连起来就是Our homework having been finished,we went to play football.
注意：这里have done （从时间先后上考虑） + be done （从主动被动角度考虑）= have been done 只是被动的含义，不存在“用了主动又用了被动”。


“It being Sunday ,they had no classes.这里的being 用了主动结构，是根据哪里的思路用主动结构的？为什么要用being？”

这句话可以拆成这样的两句话：It was Sunday. They had no classes.两句没有时间先后关系，所以不需要have done形式。was是be动词，所以改成非谓语动词时用being。