一般过去时

教学内容： 一般过去时的用法及结构--4 教学目标：了解过去式的用法， 结构，并掌握过去式的动词变化 一. 一般过去时的定义：表示过去经常或偶然发生的动作， 或存在的状态的时态 二.一般过去时的结构： 1. 含有系动词be的结构： 肯定句            否定句              疑问句 I was…             I was not…         Were you…? Yes, I was. /No, I was not. He/She/It was…     He/She/It was not    Was he/she/it…? Yes, he/she/it was ./No, he/she/it was not. We/They/You were  We/They/You were not Were you/they…? Yes, we/they  were.                                               No, we/they weren’t. 说明： was not = wasn’t   were not =weren’t 2. 含有实义动词的过去式：（以 work 举例） 肯定句             否定句       疑问句 Sb+ worked     Sb +didn’t work   Did sb work….? 注意：人称的变化 三. 一般过去式的构成 动词变化有规则和不规则两种 1. 动词过去式的规则变化， （1）一般在动词结尾加ed 如：worked, planted, played (2) 结尾为e的动词直接加d , liked, lived, changed (3) 重读闭音节的词，双写最后一个字母加ed planned(计划)， stopped , dropped (4) 以辅音字母加y结尾的， 变y 为I 再加ed 如： carried, studied, cried 注意：prefer ---- preferred  travel---travelled 2. 词尾 ed的读音 （1） 在清辅音后读/t/ dropped   looked   laughed/la:ft/(嘲笑)  washed danced    stopped  watched           dressed  liked (2) 在浊辅音及元音后读/d/ played   answered   followed   agreed   arrived listened  borrowed   called     returned  saved (3) 在/t/, /d/后读/id/ pointed   shouted   planted   hated   mended（修理） needed   wanted    waited 一般过去式的用法： 1. 表示过去某个时间发生的动作或存在的状态，常和表示过去的时间状语 yesterday, last night, two weeks ago, in 1995等连用 Jim had some bread for breakfast yesterday. Jim昨天早餐吃了一些面包。 I went home at half past five the day before yesterday. 我前天5:30回家。 When did you start in this school? 你什么时候开始来这所学校上学？ 2. 表示过去经常或反复发生的动作 His father often went to work by bus last year.  去年他父亲经常坐车上班。 Lei Feng was always ready to help people in trouble. 雷锋总是乐意帮助有困难的人。 练习： 一. 写出动词的过去式 1. write ________  2. read_______   3. buy______   4. bring_______ 5. teach________  6. drive________  7. catch_____   8. take________ 9. make________  10. see ________  11. ask______   12stop _______ 13 begin _______  14. open _______  15. swim _____  16. carry _________ 17. say _________  18. fly _________  19. put ______  20. forget _______ 21. know _______  22. find _________ 23. pass _______ 24. watch _______ 二. 句型转换 1. She bought a bike yesterday. ___________________________________(否定句) _____________________________________(一般疑问句) _____________________________________(对划线部分提问) 2. My father did some cooking himself . _________________________________________（否定句） ____________________________________________(一般疑问句) ____________________________________________(对划线部分提问) 3. My mother was born in 1972. __________________________________________(否定句) ___________________________________________（一般疑问句） ___________________________________________（对划线部分提问） 4.My sister saw a friend in the street the other day. ____________________________________________(否定句) ______________________________________________（一般疑问句） _______________________________________________(对划线部分提问) 三. 翻译 1. 今天早晨他六点钟起床。 _____________________________________ 2.  上个星期天我们去了趟长城。 _________________________________________ 3