问题描述： I bought an ice cream yesterday.(改为一般疑问句)怎么写? 1个回答 分类：英语 2014-10-12 问题解答： 我来补答 你好: Did you buy an ice cream yesterday? 该一般疑问句时, 将助动词按一定时态放在主语前面, 实意动词用原形. 希望对您有帮助! 展开全文阅读
