问题描述: travelling by train is more comfortable than by air 这句话谁是主语?谓语宾语? 1个回答 分类:英语 2014-12-08 问题解答: 我来补答 travelling by train是主语is 是系动词more comfortable than by air 是表语这句话不是主谓宾,是主系表结构 展开全文阅读