我想请问下独立结构与时态有关吗？譬如表示过去，以后，这种如何表示？然后还有就是完成时的独立结构，譬如They having been working for three hours.和the homework having been done 对吗？以后时又怎么样表示独立结构呢？最后一个就是，完成时的在否定副词半倒装的时候该如何倒装呢？never have they worked 对吗？还有就是have been doing/done结构怎么样倒装呢？是把have been提前吗？谢谢老师了！
独立主格结构，假如动作早于谓语动词，则用目前分词的完成体（过去分词完成体，也没进行体，只有 V + ed 一种形式）：
These women having produced works of the highest quality, any survey of the 19thcentury English literature must include them.
独立主格结构，假如动作晚于谓语动词，则用不定式：
With too much work to do the next day, he felt anxious and didn’t sleep well.
完成时态的倒装，仅需把have/has 提前即可：
Never have I seen this kind of car.
only in this way has he been succeeded.
