Question

这句话的英语语法结构分析“than is reflected by its size.”完整的句子如下？

therefore, it exercises a far greater influence on the mechanical behavior of concrete than is reflected by its size.

Answer 1

therefore, it exercises a far greater influence on the mechanical behavior of concrete than is reflected by its size.
than当连词，后面省略了主语it，因为前面有。所以和exercises一样，用了三单形式。