一般过去时的句子结构是什么

“ 1.一般过去时的肯定句就是把谓语动词变成过去式,通常是在规则动词后面加“ed",例如,work--worked,特殊动词要特殊记忆（do--did).例句：He worked in the factory last year.
2.否定句就是谓语原形动词前加"did notdidn't.例如：He didn't work there.
3.一般疑问句就是在句首加“Did",例如：Did he work there.
4.特殊疑问句就是在一般疑问句的结构前加上特殊疑问词.例如提问地点,就是：Where did he work?但要注意,提问的要是主语就不用助动词did了,如：提问He,就是Who worked there last year?