请问新概念英语的这句话,是什么语法结构?新概念英语第三册第12课里有一句这样的话“perhaps there is an element of truth in both these picture,but few of us had an opportunity to find out”,这里为什么要用had an

请问新概念英语的这句话,是什么语法结构?新概念英语第三册第12课里有一句这样的话“perhaps there is an element of truth in both these picture,but few of us had an opportunity to find out”,这里为什么要用had an 请问《新东方的语法新概念》和《新概念英语2》有什么联系吗?我想学语法. 请问汉语语法结构的特点是什么? 新概念英语第一册73的语法点是什么? 新概念英语第二册第十一课的语法是什么 语法结构分析 Should the need arise for further expansion then .这句话的语法结构是什么? I'd be glad to help出自英语900句中的第734句,意思是：请问：'d是什么单词的缩写?另外,请分析一下这句话的语法结构, 分析下这句话的语法A radio message from the mainland had been received by the ship's captain instructing him to give up the search.我看不懂句子结构啊!这是新概念英语课文的句子 be still my beating heart请问这句话是什么意思.语法结构是怎样的? 请分析这句英语的语法The cave might never have been discovered had not the entrance been spotted by the distinguished French potholer,Berger请分析这句话的语法,中文意思我知道,关键是什么语法结构. 我想去.这句话的句子结构分析汉语语法知识，不是英语，怎么分析呀？ Another thing that he found very difficult was English grammar.这句话的语法结构是什么? A qui le dis-tu 这句话的语法结构是什么? 求教：新概念英语中的一个句子分析Only today have I begun to understand the political situation in Northern Ireland.这是什么语法结构?既然是陈述句,为什么要把 have 提到主语的前面? 请问在中文里,XX的XX是什么语法结构? 新概念英语2册45课的问题有一句话是：Only 25 per cent a thief now!为什么不是：Only a 25 per cent thief now!请问这俩句话在语法和句意上有什么区别? 英语达人,这句话的语法结构和中文意思是什么呀?what work outside academia is there for professors of literature or philosophy? This better be good请问这句是什么语法结构?