英语：could have done除了表示过去的虚拟语气还可以表示将来的?看生活大爆炸里面说的=.=现在才凌晨两点,我该怎么办?you could have waited until morning/你可以等到早上除了表示过去还可以表示将来

英语：should have done与could have done区别? could never have done could not have done 求两组英语句型的解释could have done 和 couldn't have doneshould have done 和 shouldn't have done Could have done would have done should have done 英语中何时使用wouldn,t have done shouldn,t have done couldn,t have done needn,t have donewouldn have done shouldn have done could have done needn have done 呢 could have been done ,could have could never have done 造句 how could you have done would have done,might have done,could have done,should have done分别表示什么意思? should have done ,shouldn't have done.could have done,couldn't have done could have done和need have could have done和would have done的区别 should have done和could have done的区别? 高中英语中might have done 和could have done could have done 和 might have done 的区别 I could have done without 怎么翻译? 求could 、should have done的用法.