不管什么时态,助动词do/ does/ did 都是用来帮助变疑问句或否定句的,陈述句不用助动词,而且在用了助动词do /does/ did 后动词要还原也就是说用动词原形.
比如：陈述句 He went to the park yesterday.
一般疑问句 Did he go to the park yesterday?
否定句 He didn't go to the park yesterday.
一般过去时中 主语+do+实意动词 中 实意动词需要变动词过去分词吗
不管什么时态,助动词do/ does/ did 都是用来帮助变疑问句或否定句的,陈述句不用助动词,而且在用了助动词do /does/ did 后动词要还原也就是说用动词原形.
比如：陈述句 He went to the park yesterday.
一般疑问句 Did he go to the park yesterday?
否定句 He didn't go to the park yesterday.