结构是主语+be动词的过去式(was; were)或主语+动词的过去式。

　　注意：be动词与动词过去式不可同时使用。

　　如：My earphones were on the ground just now.

　　我的耳机刚刚还在呢。

　　Where were you last week? I was at a camp.

　　你上个星期去哪了?我去野营了

　　What did you do yesterday? I visited a farm

　　你昨天去干嘛了?我去参观农场了。

　　问句有be动词将be动词移前，没有be动词借助于did，后面动词还原;

　　否定句有be动词在后面加not，没有借助于didn't后面动词还原。