英语 left 用法I regret having left the work unfinished; I should

I regret having left the work unfinished ,I_everything ahead i regret having left the work unfinished,i should have plann I regret having left the work unfinished.这是什么语法现象? Do you regret having left your first job why should I don't He regretted that the work had been left unfinished. I know what I have left unfinished will be passed on to them ----―Do you regret having left our first job?----―Why should I have little money left,please____(work)the cost exactly. I left I have one day left 其中 left 是什么语法用法 英语翻译I should've left it at,how ya doin'I should've left it a i am not sure where i should have left it