标题: 白勇226页第9题 [打印本页] 作者: ylj3618 时间: 2011-7-16 22:21 标题: 白勇226页第9题 From the bark of the paper birch tree the Menomini crafted a canoe about twenty feet long and two feet wide, with small ribs and rails of cedar, which could carry four persons or eight hundred pounds of baggage yet was so light that a person could easily portage it around impeding rapids. 请问这里的which的从句里面的复合句里面：“which could carry four persons or eight hundred pounds of baggage ” 是不是主语从句，然后was so light 是系表结构？