Simple past tense 一般过去时
【定义】表示在的过去某个时间里所发生的动作或存在的状态
【句型】
（1）在表示某个时间里存在的状态的句子，系动词用过式was，were构成。
Eg：I was at home yesterday.
（2）在表示过去某个时间里发生的动作，用动词的过去式构成。
Eg：I visited my uncle yesterday
【句式】
肯定句：主语 ＋ 动词过去式 ＋ 宾语或表语
He worked in Shanghai ten years ago.
He was an English teacher ten years ago.
否定句：
（1）主语 ＋ didn’t ＋ 动词原形 ＋ 宾语
He didn't do morning exercises yesterday.
（2）主语 ＋ wasn’t/weren’t ＋表语。
He wasn't an English teacher ten years ago.
一般疑问句：
（1）Did ＋ 主语 ＋ 动词原形 ＋ 宾语
Did you study English in 1990 ?
（2）Was/Were + 主语 ＋ 表语
Was he a pupil five years ago ?
特殊疑问句：
（1）特殊疑问词 ＋ did + 主语 ＋ 动词原形 ＋ 宾语？
Where did your parents live five years ago？
（2）特殊疑问词 ＋ were/was ＋ 表语？
Who was at the zoo yesterday?
【过去式变化】
⑴ 一般情况直接在词尾加+ ed， 如：cook-cooked wash-washed
⑵ 以不发音的e 结尾的动词，在词尾+ d 如：like-liked live-lived
⑶ 以重读闭音节结尾的动词，双写最后一个字母再在词尾+ed 如：stop-stopped shop-shopped plan-planned
⑷ 以辅音字母+y 结尾的动词，要改y 为 i 再加 ed 如：study-studied carry- carried
【不规则变化】
1、改变动词中的元音：begin→began drink→drank come→came eat→ate grow→grew run→ran know→knew win→won speak→spoke take→took write→wrote get→got
2、变词尾的–d 为t ：build→built lend→lent send→sent spend→spent bend→bent
3、与动词原形一样：cut→cut put→put cost→cost hurt→hurt shut→shut
4、变-ay 为-aid (少数动词)：say→said pay→paid lay→laid
5、采用不同词根：sell→sold teach→taught buy→bought
6、其他。如：am/is→was are→were have/has→had do→did
