问题描述： if条件句的3中状态,分别对将来现在过去进行的假设 1个回答 分类：英语 2014-12-09 问题解答： 我来补答 if 从句 主句 对过去假设 had done would\could\should\might+have done 对现在假设 did \ were would\could\should\might+ do 对将来假设 were to do would\could\should\might+ do did \ were should+do 展开全文阅读
