Does he do his homework?还是Does he his homework?

来源：百度知道 编辑：UC知道 时间：2024/05/29 13:32:01
有了does ，为什么还要重复一遍do呢？

第一个does是疑问句的前置用法.
后边的do his homework是动词加宾语结构,做的内容.

缺少do 的话,这句话就是错误的.

Does he do his homework?正确

does是问句的引导词，无实际含意，do在这里是谓语动词做。

这里的DO是实意动词“做作业”，所以对这个词提问的时候，一般疑问句要用个助动词

Is he doing his homework?

Has he finished his homework?

Does he do his homework? 这个表达是错误的.

Has he finished his homework?

Does he do home work?

因为前一个是助动词，后一个是动词。强调做。。这个动作。。