一般过去时的陈述句主要有以下几种句型结构：

肯定陈述句

含be动词：主语 + was/were + 其他。例如：He was late for school yesterday.

含实义动词：主语 + 动词过去式 + 其他。例如：We played chess last week.

否定陈述句

含be动词：主语 + wasn't/weren't + 其他。例如：She wasn't at home last week.

含实义动词：主语 + didn't + 动词原形 + 其他。例如：He didn't do his homework yesterday.

一般疑问句

含实义动词：Did + 主语 + 动词原形 + 其他？例如：Did we play chess last week？

含be动词：Was/Were + 主语 + 其他？例如：Were you at home last night？

这些结构可以帮助你形成一般过去时的陈述句，表达过去某个时间发生的动作或状态。注意在否定句中，如果句中有some，要把some改为any。例如：

肯定句：We saw some birds in the tree.

否定句：We didn't see any birds in the tree.