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

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 虚拟语气倒装疑问句应该怎样书写呢?had sb done sth,would sb have done sth.这种句式可以算作带有虚拟语气倒装的疑问句嘛（对过去虚拟?）我的意思是正常的虚拟语气句子不是if sb had done sth,sb would h 求虚拟语气讲解 跪求高中英语虚拟语气的讲解~ 虚拟语气 ifif引导的虚拟语气,从句时态倒退一步吗?主句呢?在对过去进行虚拟时,是不是 if sb had done sth ,sb should have done sth?对现在的虚拟,是不是 if sb did sth,sb should do sth 对将来的虚拟是怎样的? 求高中英语虚拟语气讲解~ 关于虚拟语气的问题希望可以讲解一下虚拟语气中所有有关had的语法点 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had done与would have done,did与would do 的用法有何区别 英语中虚拟语气的讲解 虚拟语气具体用法的讲解 请大家讲解虚拟语气的用法 有关虚拟语气的讲解和习题 虚拟语气具体讲解? 虚拟语气讲解 关于虚拟语气的详细讲解举出虚拟语气的例句,并讲解一下虚拟语气的具体用法! 求讲解.关于虚拟语气的.”Have you ever been to Beijing?““No,but I wish I had”为什么不是but I wish I have呢? 虚拟语气中的would/conld/should do/have done 与 did/had done有何区别