But Beethoven continued conducting, his head buried in the score.
请问这句话的but是连接词的话,buried怎么理解,被动是不是要加上be动词,或者是独立主格结构,那么怎么理解but这个连接词?
But (连词)Beethoven(主语) continued(谓语动词,过去时) conducting(动名词作宾语), his head buried in the score.