please pass me the book whose cover is green 为什么要用whose不用 whom

please pass me the book whose cover is green 为什么要用whose不用 whom
please pass me the book whose cover is green 为什么要用whose不用 whom

please pass me the book whose cover is green 为什么要用whose不用 whom
这句话的意思是：请递给我那本绿色封面的书…当然是whose cover,理解为哪本的封面,whom cover没有这样的用法