would have done和虚拟语气有关 would have sth是个什么语法概念?would have done和虚拟语气有关那would have sth是个什么语法概念？为什么要加would

shall have done和would have done在虚拟语气句中是什么意思? would have done非虚拟语气情况下的用法和意义 would have done和虚拟语气有关 would have sth是个什么语法概念?would have done和虚拟语气有关那would have sth是个什么语法概念？为什么要加would 虚拟语气中对过去的虚拟主句否定是用would have not done or would not have done? 区别could,might,would,should have done作为虚拟语气could have done,might have done,would have done,should have done怎么区别 虚拟语气中的would/conld/should do/have done 与 did/had done有何区别 关于would rather的虚拟语气would rather have done跟would rather had done是不是都是表示对过去的虚拟语气? 虚拟语气中的would have done 与could have done结构 有什么 区别?什么时候用would什么时候用could? 虚拟语气中had done与would have done,did与would do 的用法有何区别 would/could/must have done在虚拟语气中怎么用? 虚拟语气 if You could have done other career What would it have been 为什么不是 if ..Had done 句 求虚拟语气的讲解 had sb done sth,sb would have not donehad sb done sth,sb would have not done这个句型是什么意思 怎么用 英语虚拟语气 200分在if引导的虚拟语气中,主句用would have done（与过去相反）或would do（现在相反）,从句用had done或did,were和were to do.但在as if ,if only ,but for等词引导的虚拟句中,却只能用上面的 虚拟语气,与过去事实相反 :从句 :had + 过去分词 主句 :would/ should/ could/ might + have + done虚拟语气,与过去事实相反 :从句 :had + 过去分词 ,主句 :would/ should/ could/ might + have + done,为什么有时会有wou 虚拟:should have done ,could have done请教虚拟语气的几种情况是在什么时候使用的:should have done 2.could have done 3.would have done(是虚拟吗?) 4.might have done(是虚拟的用法吗?) 比如:Mary couldn't have recei 情态动词中 should might could would + have done 与 它们在if 虚拟语气中用法 有何关系? 十万火急::Besides,what would you have done if you were in my shoes?过去的虚拟语气吗?怎么用 有关英语的题目在虚拟语气中,would和would have到底什么时候用?