一般过去时：表示发生在过去的事情或存在的状态，常与just now; a moment ago; ago; yesterday; last ( week; month; year; Monday; weekend); this morning等词连用。
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didnt后面动词还原。