Do you know (how much she paid for) the MP3 player last week

Do you know how much she paid for the MP3 player last week?
Do you know 这里do 助动词,know是真正的动词,you 是主语.
一般英语句子的结构简单的说就是主谓结构,看谓语动词需要宾语时是主谓宾结构（）,这里有了主语,谓语know 需要宾语,就差宾语.所以这是个宾语结构 ,宾语从句要陈述语序!