I regret having left the work unfinished.这是什么语法现象?

问题描述:

I regret having left the work unfinished.这是什么语法现象?
I regret having left the work unfinished.
这是什么语法现象?having left the work unfinished是宾语吗?那left the work unfinished在句子里做什么成分呢?

I是主语
regret是谓语
having left the work unfinished.是动名词短语 作宾语
其中 having left是动名词leaving的完成形式
the work是动名词的宾语
unfinished是动名词宾语 的宾补