新概念里的一句话It must have been about two in the morning when I returned home.是什么从句,还有句子成分是什么...急

新概念里的一句话It must have been about two in the morning when I returned home.是什么从句,还有句子成分是什么...急 新概念英语里的一句话:He had found that five whisky bottles which the ghost must have drunk the night before.请问 其中的“before”是什么用法.以前学过,现在忘了 新概念英语里的一句话:He had found that five whisky bottles which the ghost must have drunk the night before.请问 其中的“before”是什么用法.以前学过,现在忘了…… 英语翻译新概念练习题里的一句话,该怎么理解? It can't have been my new hat.这样的一句句子,没有上下文,怎么分辨它是过去完成时,还是现在完成时啊?新概念第一册130课那么It must have been my dog呢？ 新概念第二册的17课中,最后一句话If anyone ever asks her how old she is,...是不是有问题新概念第二册的17课中,最后一句话If anyone ever asks her how old she is,she always answers,'Darling,it must be terrible to be grown u 新概念3中第一课 A puma at large中,HAVE的用法疑惑新概念3中第一课 A puma at large中,有一句话：As no pumas had been reported missing from any zoo in the contry,this one must have been in the possession of a private collector an You must have missed it 新概念第三册的第一课:where must the puma have come from?第三册的第一课where must the puma have come from? it must have rained,＿it? must have/ must have been的区别 It must have been they who picked the flowers.这里的强调句的must have been 为什么用现在完成时? 新概念英语2册47课问题有一句话是：When I suggested that some villagers must have come in for a free dirnk,Mr.Thompson shook his head.这里应该是must have came呀!文章为什么写must have come? 美国总统林肯说的一句话 完整版本是什么?奥巴马演讲中引用的~We are not enemies,but friends...Though passion may have strained,it must not break our bonds of affection就是这个~ It Must Have Been Love (Cologne) 歌词 It Must Have Been Love 歌词 I must go to the grocer's这是新概念第一册79课的一句话.我不明白为什么the grocer's 后面为什么要加个's呢? 关于must have been英文翻译里,“昨天晚上肯定是下雨了”这句子翻译,可不可以写成It must have been rainy last night 可是我的老师,说rainy应该改成是raining,但must have been也可以加形容词呀,为什么不对