问题描述： it is supposed to 造个句子 1个回答 分类：英语 2014-10-04 问题解答： 我来补答 当be supposed to...的主语是“物”时,它表示“本应；本该”,用于表示“某事本应该发生而没有发生”.It is supposed to rain today. 展开全文阅读
