over these tombs huge stone pyramids were built.这句话中的成份是怎样的请分析,

题目

over these tombs huge stone pyramids were built.这句话中的成份是怎样的请分析,
特别是were built这个是这句话中的表语还是被动时态啊,都没有见过这种形式的名子,

答案

这是一个倒装句,正常的句式应该是这样的,Pyramids were built over these tombs huge stone .介词短语前置,有强调的作用.