问题描述： 在什么时候过去式的be后面的动词要加ing什么时候不用加? 1个回答 分类：英语 2014-10-24 问题解答： 我来补答 有以下三种常见情形:过去进行时：was/were doing举例：I was watching TV when you called me last night.过去将来时：was/were going/coming……举例：I am sorry I couldn't wait for you at home last night,because I was going to hospital. 展开全文阅读
