请您帮我分析一下句子的结构成分!It serves as the mount for the lifting drive with pedestal bearings for the drive shaft and the guide roller units to guide and stabilize the wheel deck.
问题描述：
请您帮我分析一下句子的结构成分!
It serves as the mount for the lifting drive with pedestal bearings for the drive shaft and the guide roller units to guide and stabilize the wheel deck.
答
It (主语)serves（谓语） as
the mount for the lifting drive with pedestal bearings for the drive shaft
and the guide roller units to guide and stabilize the wheel deck.
整个句子结构是it serves as the mount..and the guide roller units..