英语提问：句子结构分析,急!What was the problem the experts were unable to solve?麻烦详细点,新手.
问题描述：
英语提问：句子结构分析,急!
What was the problem the experts were unable to solve?麻烦详细点,新手.
答
什么样的难题专家也无法解决?
答
这要怎么分析呢，就是一个特殊疑问名呀，首先这么说吧，what was the problem是提问，后面的定就是problem 的定位从句了，肯定是省略的一个词，应该是 problem which the expert were unable to solve....
答
句子主干是：What was the problem?问题是什么
后面部分是作为the problem的一个定语从句,解释说明是“专家不能解决”的问题,只不过此处省略了连接词which/that
答
What was the problem → 主系表结构
what→ 这里做主语
was →be 动词做谓语
the problem 表语
（the experts were unable to solve）做problem的同位语，进行进一步的追加说明