I don't kown__. --Neither did I. A. What the matter was with him B.What was wrong with him

……好吧
What the matter was with him 这句话怎么理解呢?如果what是表语,the matter是主语,was是谓语,with him是状语对吧?还原句型就是the matter was what with you?不觉得别扭吗?
实际上what 是主语,was是谓语,the matter是表语,这个句子的正常语序就是what was the matter with him?所以A选项的语序其实是颠倒了表语和谓语的位置.
B选项就是陈述语序,what 是主语,句子是主系表加状语结构.
对主语提问的句子的语序都不用变,因为特殊疑问句中疑问词要提前,而疑问词本身就是主语.