关于新概念第三册第一课有一句话一个had用法问题新概念第三册第一课后面有一句“but where had it come from”我想问一下里面的had是翻译成什么啊?可以换成was么?

关于新概念第三册第一课有一句话一个had用法问题新概念第三册第一课后面有一句“but where had it come from”我想问一下里面的had是翻译成什么啊?可以换成was么? 新概念第三册第三课的一句话 each of these represented a goddess and had,at one time,been painted...新概念第三册第三课的一句话each of these represented a goddess and had,at one time,been painted.为什么要用逗号短开那 邦我分析一下新概念英语第三册第一课中一句话的语法.When reports came into London Zoo that a wild puma had been spotted forty-five miles south of London,they were not taken seriously.本句中的they是指动物圆的专家呢? 关于新概念英语第三册第一课的问题新概念3 第一课,有一句'a large cat' only five yards away from her.这里only five yards away from her.属于什么成分?另外away可不可以去掉? 关于新概念英语第三册的几个问题 新概念第三册第26课的几个疑问1、manufacturers had to pay more money than they had anticipated,这里的manufacturers为什么要加s,文中不是指的是一个工厂吗?第三段中 a company of biscuit manufacturers,是在各地有多 关于新概念第三册第一课的问题?有一句是 As no pumas had been reported missing from any zoo in the country,this one must have been in the possession of a private collector.对于肯定推测 have been 是死也不能改的吗? has 可 新概念第三册,最后一课,有一句话the only thing to do was ask them to为什么was 和ask之间不加to呢 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 新概念英语第二册第一课和第三课第一课有多少主谓.主谓宾、主系表结构的动词 和第三课有多少主谓双宾结构的句子举例至少两个.保证分高 新概念英语第三册习题的问题第一课中1、What particular evidence persuaded the experts that a puma had been seen in the village?为什么要选A.The puma had not attack the woman.而不选B.The woman had described the animal she had se 新概念英语第二册第三课练习答案有谁知道新概念英语练习C的答案, 新概念英语第三册25课的.Even this was remarkable,considering that she had had so many delays.怎用了两个had呢? 新概念英语练习填空题答案谁有?谁有新概念英语第三册的课后习题答案?最好有填空的从第一课到最后一课。 新概念英语第三册有翻译吗 谁有新概念英语第三册电子书? 新概念英语第三册有多少课时 有新概念英语第三册的录音吗?要一个句子一个录音文件.急用,