having done的句子是什么时态的,having done 咋用~

having done的句子是什么时态的,having done 咋用~ having been done是什么时态? 英语中having done是什么时态? having done的用法 No sooner said than done这句子的动词是什么时态的如题…… having done放句首的时候句子的时态如果是现在完成时的话，后面的句子不该出现动词的过去式该是一般式吧。可是我遇到一道题后面是done的形式啊。 what done has been done has been done?在说说他的结构是什么时态? 这个是哪种英语语法?having been done 是哪种类型的语法?什么时态 having done后的动词时态有限制吗?举个例:Having ate his lunch,he had finished his homework. Everything can be done has been done.请问这里can be done 用的是什么时态?是被动句吗?请求分析这句句子：Everything can be done has been done.请问这里can be done 用的是什么时态?是被动句吗?这里has been done用的 not having done 和 having not done 的区别 having been done和having done的区别rt having been done的用法 have been done 这个是什么时态的结构 having done 、done、 being done、 having being done 的区别与详细用法 having been done与done的区别是什么为什么有时候having been可以省略?帮忙举几个例子! thanks for having me as your guest为什么这句话的have是ing形式 这个句子是什么时态? 在非谓语题目中,having been done 和done 的区别是什么啊?