do和did都是助动词，它们的用法如下： 1. do： （1）构成一般现在时态，例如：I do my homework every day. （2）构成一般现在时态的否定句，例如：I don't like this movie. （3）构成一般疑问句，例如：Do you like coffee? （4）构成否定疑问句，例如：Don't you like coffee? （5）构成特殊疑问句，例如：What do you like to drink? 2. did： （1）构成一般过去时态，例如：He did his homework yesterday. （2）构成一般过去时态的否定句，例如：They didn't go to the park last Sunday. （3）构成一般疑问句，例如：Did you go to the park last Sunday? （4）构成否定疑问句，例如：Didn't you go to the park last Sunday? （5）构成特殊疑问句，例如： What did you do last Sunday? 本文来源：https://www.wddqw.com/doc/8066dea44b2fb4daa58da0116c175f0e7cd11992.html