一般过去时知识点及练习Ⅰ一般过去时的小学阶段的基础知识1、关键词： just now，a moment ago，ago, yesterday ，last ,yesterday morning, the day before yesterday ,in the past, in过去的年份或月份， once upon a time等。2、.含有 be动词的一般过去时a. 定义：表示过去某时间存在的状态或特征b. be动词过去式： am , is--- was are----were c. 含有 be 动词的一般过去时的基本句式：1．肯定句：主语 + was/ were + 其他 . 例如： 1）I was in the park a moment ago. 2）There were many trees in our country ten years ago. 3) The pair of glasses was on the desk just now. 注意：可以先考虑在一般现在时情况下的be 动词是什么， 然后再考虑该 be 动词对应的过去式。2. 含有 be动词过去式的肯定句变否定句方法： 在 was或 were后加 not,其余不变。注意碰到 some变 any. 也就是说否定句结构为：主语+ was not( wasn ’t)/ were not (weren’t) + 其他例如： 1) He was a student at a primary school ten years ago . (改为否定句 ) 2) We were here yesterday. (改为否定句 ) 3) I was at the camp last Sunday. (改为否定句 ) 3. 含有 be动词过去式的肯定句变一般疑问句方法：把 was 和 were 提到句子开头并变成大写字母，其余照抄，记得句号要变问号。但是注意碰到 some 变 any，碰到 my、our 要变 your,碰到 I、we 要变 you. 例如： 1) He was a student at a primary school ten years ago. (改为一般疑问句 ) 2) Helen and Ann were here yesterday. (改为一般疑问句 ) 3) I was at the camp last Sunday. (改为一般疑问句 ) 3、含有行为动词的一般过去时a. 定义：表示过去某时间发生的动作b. 由动词原形变成过去分词的规律：1、大部分动词直接在后面加ed 2、以字母 e 结尾的动词后面直接加d 3、辅音加 y 结尾的动词，要把y 变 ied 4、以辅-元-辅结尾的重读闭音节的动词，要双写结尾字母后再加ed 5、特殊变形例如：把下列动词变成相应的过去式wash milk live dance sing do go study carry stop start steal c.含有行为动词过去式的肯定句变否定句方法：用didn’t 来帮忙，后面跟动词原形。所以否定句的结构为：主语...
