英语过去式用法ppt课件.ppt

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1、概念：一般过去时表示过去某个时间发生的动作或存在的状态.一般过去式结构结构：主语+动词的过去式+其他。be动词：was,were规则动词的过去式不规则动词的过去式 have-had can-could go-went come-came take-took规则动词过去式的构成1.一般在动词原形末尾直接加上-ed look-looked listen-listened wait-waitedl2.以不发音的字母e结尾的动词，去e再加-ed.live-lived drive-drived like-likedl3.重读闭音节，先双写，再加-ed.stop-stopped shop-shopped

2、beg-beggedl4.末尾是辅音字母+y结尾的动词，先变y为i，然后再加-ed.study-studied try-tried carry-carried一般过去式的用法一般过去时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连用.如：last year，yesterday等；也可表示过去经常反复发生的动作，常和often，always等频率副词连用.例如：I saw him in the street yesterday.昨天我在街上看见他了.Li Mei always went to school on foot last year.去年李梅总是步行上学.一般过去式句型

3、变化肯定句结构为：主语+动词的过去式+其它.例：他昨天去图书馆了。l否定句结构为：主语+did not(didnt)+动词原形+其它.例：他昨天没去图书馆。l一般疑问句的构成：Did+主语动词原形其它？1)-Did you go to Beijing last week？-Yes，we did.(No，we didnt.)2)-Did you meet the businessman before？-No，I didnt.(Yes，I did.)He went to the library yesterday.He didnt go to the library yesterday.4.特殊疑

4、问句的构成：疑问词did+主语动词原形其它？1)-What did you do last night？-I did my homework.2)-Where did you go last week？-I went to Shanghai with my parents.一般疑问句口诀一般过去时并不难，表示过去动作、状态记心间.动词要用过去式，时间状语句末站.否定句很简单，didnt 站在动词原形前，其它部分不要变.一般疑问句也好变，did放在句子前，主语、动词原形、其它部分依次站.特殊疑问句也简单，疑问词加一般疑问句记心间.最后一条请注意，动词过去式要牢记.练习A、用动词的适当形式填空。1

5、)It_(be)Bens birthday last Friday.2)We all_(have)a good time last night.3)He _(jump)high on last Sports Day.4)Helen _(milk)a cow on Friday.5)She likes_newspapers,but she _a book yesterday.(read)6)He _football now,but they _basketball just now.(play)7)Jims mother _(plant)trees just now.8)_they _(swee

6、p)the floor on Sunday?No,they_.9)I _(watch)a cartoon on Monday.10)We_(go)to school on Sunday.B、按要求改写句子。1)My father came to the shop just now.（改为否定句）My father_ _ to the shop just now.2)I watched TV last night.（改为一般疑问句，并作否定回答）-_you _ TV last _?-_,_ _.3)Their teacher told them a story yesterday.（对红字部分提

7、问）_ _ their teacher_them yesterday?4)They were on the farm last Saturday.（改为否定句）They _ on the farm last Saturday.5)David and Liu Tao did their homework together a moment ago.（改为一般疑问句）_ David and Liu Tao_ _ homework together _ _ _.1.He usually gets up early in the morning.But_late today.2.She usually works from 8 a.m.to 5 p.m.But yesterday（8-9）_3._ on Sundays.They went to the park last Monday.4._at breakfast.But yesterday he didnt read the newspaper.一般过去时态练习一般过去时态练习把下列句子改成相应时态把下列句子改成相应时态