Just outside the ruins are a magnificent building surrounded by tall trees.

问题描述:

Just outside the ruins are a magnificent building surrounded by tall trees.
这是改错题,答案是应将are改为is,我还是读不通啊,倒装应该是is the ruins吧?至少语序也应该改吧?真不懂,

在废墟外面,是一个被大树包围的华丽的建筑.
一个华丽的建筑,所以用is