关于having been done这个语法是不是非谓语?如果主句与从句主语相同,是不是省略从句主语 可以由have benn down变成having been done 或者独立主格也可以这么变?还有哪种情况可以用?This done,we went home.=

关于having been done这个语法是不是非谓语?如果主句与从句主语相同,是不是省略从句主语 可以由have benn down变成having been done 或者独立主格也可以这么变?还有哪种情况可以用?This done,we went home.=
关于having been done这个语法
是不是非谓语?
如果主句与从句主语相同,是不是省略从句主语 可以由have benn down变成having been done 或者独立主格也可以这么变?还有哪种情况可以用?
This done,we went home.=After this had been done,we went home
这句话 had been 怎么被省略了？

关于having been done这个语法是不是非谓语?如果主句与从句主语相同,是不是省略从句主语 可以由have benn down变成having been done 或者独立主格也可以这么变?还有哪种情况可以用?This done,we went home.=
having been done 是过去分词的完成时态,属于非谓语动词.分词短语的逻辑主语是否省略,则要看分词短语的逻辑主语是否和主句的主语一致.如果一致,则分词短语的逻辑主语可以省略；如果不一致,则分词短语的逻辑主语要表示出来,这种分词短语也叫独立主格结构.请看例句：
Being sick, I stayed at home=Because I was sick,I stayed at home.( 现在分词短语的逻辑主语是 I,和主句的主语I一致,可省略） 我因病呆在家中.
The monitor being ill, we had better put off the meeting off.=Because the monitor was ill, we had better put off the meeting .(现在分词短语的逻辑主语是the monitor, 和主句的主语we不一致,所以要补充出来.）班长病了,我们最好还是延期开会吧.
Gone from home so long, they joyously embraced their mates of boyhood.=Since they had gone from home so long, they joyously embraced their mates of boyhood(过去分词短语gone from...的逻辑主语是they, 和主句的主语they一致 可省略） 他们久离家乡,高兴地拥抱他们儿时的伙伴.
This done, we went home.=After this had been done, we went home( 过去分词done的逻辑主语是this, 和主句的主语we不一致,所以要补充出来.）做完此事,我们就回家了.
问题补充回复：
在After this had been done, we went home这个句子中, we went home（我们回家）是过去发生的动作,用的是过去式,从句表示在回家以前这个事情已经被做完this had been done,从句用的是过去完成式的被动式,表示过去的过去（过去完成式）和动作被完成.过去分词done有两个意思,一个意思是表示动作已经完成,另一个意思是表示被动,所以 过去分词done 在上述的句子中就表示 had been done.在把从句After this had been done变成分词短语时,第一要去掉After,第二had been done 中要去掉 had been 就变成了过去分词done,变成分词短语就是This done.因此
This done, we went home.=After this had been done, we went home

Answer: Having been done 现在分词完成式的被动语态
状语中非谓语动词时态用何种形式是相对于主句谓语动作而言的
发生在主句谓语动作之前---用完成式
发生在主句谓语动作之后-- 不定式(用不定式表将来)
与主句谓语动作同时发生-- 用一般式
(注:这里说的是"式"不是"时")
综上所述,如果状语中的非谓语形式用了完成式,那么其...

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Answer: Having been done 现在分词完成式的被动语态
状语中非谓语动词时态用何种形式是相对于主句谓语动作而言的
发生在主句谓语动作之前---用完成式
发生在主句谓语动作之后-- 不定式(用不定式表将来)
与主句谓语动作同时发生-- 用一般式
(注:这里说的是"式"不是"时")
综上所述,如果状语中的非谓语形式用了完成式,那么其动作一定是发生在了主句谓语动作之前,并不是LZ所理解的简单意义上的"have been down 变成了"having been done"
如:
Having done my my business , I returned home.
= After I "had done" my business,I returned home .
做完事后，我就回家了。
问题补充回复:
This done, we went home.=After this had been done, we went home
这句话 had been 怎么被省略了？
Answer: 此句状语部分是一个独立主格结构,它与我上面所讲的非谓语动词做状语不同之处在于,非谓语动词短语作状语本身没主语其逻辑主语是主句中的主语,而独立主格结构作状语是本身自带主语跟主句主语无任何关系,自含逻辑上的主谓结构,故称其为独立主格.
This done, 其中This 指示代词做主语.其独立主格的构成形式是
"主语+过去分词" - 非谓语动词的过去分词形式本身表"被动"和"完成"
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