问题描述：
he bought a new car .改疑问句did he bought a new car?还是 did he buy a new car?
新概念第一册学完了.在第二册开头有个test.标准答案里是did he bought a new car?.问题是上面哪个对,Did后面难道不是动词原形吗?
新概念第一册学完了.在第二册开头有个test.标准答案里是did he bought a new car?.问题是上面哪个对,Did后面难道不是动词原形吗?
问题解答：
我来补答展开全文阅读