过去式：动词加ed 肯定句：主语+动词过去式 I worked there yesterday. 疑问句：did+主语+动词原形 Did you work there yesterday? 否定句：did+not+动词原形 I did not work there yesterday. 特殊疑问句：wh疑问词+did+主语+动词原形 What did you do yesterday?
过去式：动词加ed 肯定句：主语+动词过去式 I worked there yesterday. 疑问句：did+主语+动词原形 Did you work there yesterday? 否定句：did+not+动词原形 I did not work there yesterday. 特殊疑问句：wh疑问词+did+主语+动词原形 What did you do yesterday?
