初中一般过去时课件.ppt

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1、一般过去时一、定义动词的一般过去时态表示过去发生的动作、情况或存在的状态。行为动词（即实义动词）的过去式没有人称和数的变化。二、谓语动词的构成形式二、谓语动词的构成形式一般过去时的谓语动词有一般过去时的谓语动词有be动词和行为动词两种基动词和行为动词两种基本形式。本形式。类比一般现在时：类比一般现在时：（1）当谓语动词是）当谓语动词是be(am,is,are)动词时，动词时，am/is 变为变为was,are 变为变为were。在。在 否定句中，直接将否定句中，直接将not添加在添加在was/were之后之后.疑问句时，将疑问句时，将was/were置于主语之前即可。置于主语之前即可。e.g.

2、肯：肯：I was ill yesterday morning.否：否：I wasnt ill yesterday.一般疑问句：一般疑问句：Were you ill yesterday morning?Yes,I was./No,I wasnt.特殊疑问句：特殊疑问句：How was she？（2）当谓语动词是行为动词时，将对应的一般现在时肯定句中的行为动词变成过去式；否定及疑问句中的do/does变成did即可动词仍用原形，即“见did，也用动原”。一般现在时 一般过去时e.g.She likes dancing.She doesnt like dancing.Does she like d

3、ancing？What does she like？She liked dancing.She didnt like dancing.Did she like dancing？What did she like？规则过去式变化规律：一般直接加ed或dplayplayed looklooked likeliked wantwanted以辅音字母+y结尾的，改y为i加edstudystudied carrycarried以“单元音+单辅音”结尾的重读闭音节双写词尾的辅音字母再加edstopstopped planplanned不规则变化有：seesaw dodid gowent am/iswas

4、arewere has/havehad等写出下列动词的过去式1.study _ 2.go _3.turn _ 4.are_5.play _ 6.have _7.stop _ 8.clean_9.is _ 10.love_三、一般过去时的用法1.表示在表示在过去时间里发生过去时间里发生的动作或存在的状态的动作或存在的状态 e.g.Liu Jie got up at 7:10 this morning.He was a student three years ago.2表示表示过去经常或反复发生过去经常或反复发生的动作。的动作。e.g.Zhang always went to school by

5、bike last term.3表示表示已故人所做已故人所做的事情。的事情。e.g.Comrade Lei Feng did good deeds in his life.(雷锋同志做了一生的好事。)4.表示表示过去所发生的一系列的动作过去所发生的一系列的动作，而这一系列的，而这一系列的动作是从现在的角度来考虑的，不是从动作相互之动作是从现在的角度来考虑的，不是从动作相互之间的关系这一角度来考虑的。间的关系这一角度来考虑的。e.g.Miss Liu got up at seven oclock this morning,dressed,had breakfast,and went to wor

6、k.四、一般过去时常用的时间状语四、一般过去时常用的时间状语1.yesterday或以其构成的短语：yesterday morning(afternoon,evening)等；2.由“last+一时间名词”构成的短语：last night,last year(winter,month,week)等；3.由“时间段+ago”构成的短语：a moment ago,a short time ago,an hour ago等；4.由“介词+一时间名词”构成的短语：on Friday,on Monday morning,on April 15,on the night of Oct.1，in 1980；

7、5.频度副词：often,always 等；6.其它：then,just now,once,以及由after或before构成的介词短语等；7.由某些表示过去时态的从句等。比较：He is 15 now.He was 14 last year.He was born on January 12,1991.练一练：1,She often _(go)to school at eight oclock.2,They are _ supper.(eat)3,He usually _ up at 17:00.(get)4,She _(live)in Beijing last year.5._(be)th

8、ere a fly(苍蝇苍蝇)on the table just now?6.I _(call)Mike this morning.7.Last week we _(pick)many apples on the farm.8.My mother _(not do)housework yesterday.v常见错误一、把动词变成过去式易出错例:1 They stoped(stop)talking just now.2 They plaied(play)football yesterday.答案:1 stopped 2 played 解析:我们可以记住下面的口诀:动词变成过去式,双写规律要牢记;

9、y前若是辅音字,y变i加-ed;y前若是元音字,只须直接加-ed.二、忘记把动词变成过去式例:I fly(fly)kites on the afternoon of Sunday.答案:flew解析:我们可以记住下面的口诀:一般过去时态里,过去形式莫忘记.v三、在句式变换时易出错v例:1 We didnt went(not go)out last Friday.v2 Did you had(have)a good time yesterday?v答案:1 didnt go 2 Did havev 解析:请记住口诀见助动,用原形.v四、易与单三人称作主语的一般现在时弄混v例:He taughts

10、(teach)me English last year.v答案:taughtv解析:行为动词的过去式无人称和数的变化.即使主语是单三人称,也和其它人称所用动词的形式一样.真题演练：1.（07中考）When _ your brother _ back?About half an hour ago.A.did;come B.had;come C.do;come D.have;come 2.（08中考）When _ your mother _ you that blue dress,Mary?Sorry,I really cant remember.A.does;buy B.has;bought C

11、.had;bought D.did;buy3.（09中考）When _ Jessy _ to New York？Yesterday.A.does;get B.did;get C.has;got D.had;got改错题改错题How is Jane yesterday?_He gets to school at six yesterday._He often goes home at 6:00 last month._I can fly kites seven years ago._Did you saw him just now._Tom wasnt watch TV last night._

12、I did my homework later._He wait for you three hours ago._ Who find it just now?_ 句型转换1.They came to China in 1990.(变一般疑问句)_ they _ to China in 1990?2.I was ill for two days last week?(同上)_ you ill for two days last week?3.The twins go to school on foot every day.(同上)_ the twins _ to school on foot every day?4.She washed the clothes last Sunday.(变否定句)She _ _ the clothes last Sunday.