完整版初中八大时态整合版课件.ppt

1、初中英语八大时态讲解现在时一般过去时进行时现在过去一般将来时过去现在完成时过去初中英语八大时态讲解现在时一般过去时进行时现在过去一般将来时现在时一般过去时现在时一般过去时一般现在时1.表示事实,现状,性质或经常的,习惯的动作（句1）2.表示普遍真理.（句2）3.表示在现在时间里所发生的一个动作.（句3）基本结构：S+V+(主谓一致)常与often,usually,always,sometimes,today,every day,on Sundays等时间状语连用。观察并讨论：以下句子有何特点？（结构/标志词）1、I often go to school by bike.2、The earth

2、goes round the sun.3、Here comes the train.一般现在时1.表示事实,现状,性质或经常的,习惯的动作（句1一般现在时动词第三人称单数变化规则动词第三人称单数变化规则:1)一般情况下，动词后面直接加-s.eg:work-works2）辅音字母+“y”结尾的动词，去y为i再加eseg:carry-carries3）以s、x、ch、sh或o结尾的动词，加“es”eg:guess-guessesrelax-relaxeswatch-watcheswash-washesgo-goes一般现在时动词第三人称单数变化规则:1)一般情况下，动词后面翻译下列句子：1）他每天

3、走路去上学。He goes to school on foot every day.2）我们经常在家吃晚饭。We often have supper at home.3）她每个周日都不用工作。She doesnt(do her)work every Sunday.翻译下列句子：1）他每天走路去上学。H e g o e s t o s一般过去时表示过去发生的动作或存在的状态基本结构：主语+动词过去式+常与:ago,yesterday,last week,in 1995 等连用.观察并讨论：以下句子有何特点？（结构/标志词）1、I played football yesterday.2、They

4、began the work two months ago.3、There was a park here in 1995.4、I watched a movie last week.一般过去时表示过去发生的动作或存在的状态基本结构：主语+动词动词过去式变化规则一、规则动词的过去式由“动词原形+-ed”构成，具体变化有：1.一般的直接在词尾加-ed。如:wantwanted2.以不发音的e结尾的在词尾加-d。如：likeliked,livelived3.以一个元音字母加一个辅音字母结尾的重读闭音节动词，先双写结尾的辅音字母，再加ed。如stopstopped4.以辅音字母加y结尾的动词，先把y

5、变成i，再加-ed。如：studystudied动词过去式变化规则一、规则动词的过去式由“动词原形+-e d”动词过去式变化规则二、不规则动词参照不规则动词表,需要专门记忆。eg:buildbuilt,lendlent,sendsent,spendspent 等动词过去式变化规则二、不规则动词参照不规则动词表,需要专门记用所给词的适当形式填空1.Wheres the camera?It _(is)there a wasmoment ago.2.Tom _(go)to visit a farm last week.went3.Where _(be)you just now?were4.It _(

6、be)there just now,but it isnt wasthere now.用所给词的适当形式填空1.Wh e r e s t h e c a m e r现在进行时过去现在进行时过去现在进行时表示现在正在进行或现在这段时间在进行的动作。基本结构：主语+be(am,is,are)+v-ing+句中常出现 now,at present,look,listen 等标志词观察并讨论：以下句子有何特点？（结构/标志词）1.The students are listening to the teacher carefully now.2.We are studying English at pr

7、esent.3.Look!They are dancing.4.Listen！Lily is singing.5.She is writing a letter this year.现在进行时表示现在正在进行或现在这段时间在进行的动作。基本结动词现在分词(V-ing)的构成 一般动词直接在词后加-ingdo doingread-readingwork workingstudy studyingwatch watchingjump jumpin 以不发音的字母e 结尾的动词，应先去掉 e 然后加 ingtake taking come comingleave leavinglive living

8、dance dancingwrite writing动词现在分词(V-i n g)的构成一般动词直接在词后加-i n 以“一个元音字母+一个辅音字母”结尾的动词，应先双写这个辅音字母然后再加-ingstop stopping begin beginningswim swimmingrun runningsit sitting(注意：listen listening;open opening;eat eating;rain raining;sleep-sleeping)2020/4/12以“一个元音字母+一个辅音字母”结尾的动词，应先双写这个辅小试身手1.Look!The twins_their

9、 mother do the housework.CA.helpsB.helpC.are helpingD.helped2.Its 5 oclock now.Weare having(have)supper now.3.Whatareyou doing(do)at present?小试身手1.L o o k!T h e t w i n s _ _ _ _ _ t h e i r过去进行时表示过去某一时刻或某阶段时间正在进行的动作句中常出现：at+时刻+过去时间副词;at this/that time+last;when;while等词结构：主语+be(was/were)+v-ing+观察并讨论

10、：以下句子有何特点？（结构/标志词）1.It was raining at 7:00 the day before yesterday.2.They were building a reservoir at this time last winter.3.We were reading when the teacher came in.4.My mother was cooking while my father was watching TV.5.Amy was writing a book the last whole year.过去进行时表示过去某一时刻或某阶段时间正在进行的动作句中常出

11、小试身手1.昨天那个时候Tom 正在看电影。Tom was watching a movie at that time yesterday.2.上周日四点我们正在游泳。We were swimming at four p.m.last Sunday.3.老师进来时我们正在读书。We were reading when the teacher came in.4.那时，我的姐姐在唱歌而我在跳舞。My sister was singing and I was dancing at that time.小试身手1.昨天那个时候T o m 正在看电影。T o m w a s w课后作业用所给的动词的正

12、确形式填空is drawing（draw)a picture now.1.The boy _are singing2.Listen！Some girls _(sing)in the classroom.Iswashing3._Helen_(wash)clothes?-Yes,she is.were waiting4.While we _(wait)for the bus,a girl _ was running(run)up to us at that time.were5.What _ you doing(do)at that time?-Wewere watching(watch)TV.课

13、后作业用所给的动词的正确形式填空i s d r a w i n g（d r一般将来时过去一般将来时过去表示将要发生的动作或情况常用时间状语有:tomorrow，next time,later(on),soon,in a month,from now on 等.结构：1.“be going to+动词原形”表示打算或准备要做的事情,或者主观判断即将要发生的事。（句 1）2.“Will/shall+动词原形”表动作在现在或目前还未发生，要在将来的某个时间内发生（句 2&3）一般将来时观察并讨论：以下句子有何特点？（结构/标志词）1、It is going to rain soon.天快要下雨了。2

14、、I shall be eighteen years old next year.明年我就18岁了3、We will help him if he asks us.如果他请求我们，我们愿意帮助他。表示将要发生的动作或情况常用时间状语有:t o m o r r o w，选择填空1.There _ a meeting tomorrow afternoon.CA.will be going to B.will going to be C.is going to be D.will go to beD2.Charlie _ here next month.?isnt working B.doesnt

15、working C.isnt going to working D.wont workD3.He _ very busy this week,he _ free next week.A.will be;is B.is;is C.will be;will be D.is;will beD4.There _ a dolphin show in the zoo tomorrow evening.A.was B.is going to have C.will have D.is going to be选择填空1.T h e r e _ _ _ _ _ _ _ a m e e t i n g过去将来时表

16、示对过去的某一个时间来讲，将要发生的动作。结构：表示按计划或安排即将发生的事主语+would+动词原型+主语+was/were going to+动词原形观察并讨论：以下句子有何特点？（结构/标志词）1.He said he would go to the park the next day.He told me that he was going to return home.过去将来时表示对过去的某一个时间来讲，将要发生的动作。结构：小试身手1.Father said that he _ me to Beijing the next year.BA.took B.would takeC.t

17、akes D.will takeC2.Jenny said she _her holiday in China.A.spent B.will be spentC.was going to spend D.will spend3.I wasnt sure whether Lucywould come(come)the next year.4.Miss Zhang said she was going to visit(visit)the Great Wall next summer.小试身手1.F a t h e r s a i d t h a t h e _ _ _ _现在完成时过去现在完成时

18、过去现在完成时表示过去发生或已经完成的某一动作对现在产生的影响或结果的动作。基本结构：主语+have/has+过去分词过去分词（V.-ed）+句中常出现already、never、ever、just、yet等时间状语标志词观察并讨论：以下句子有何特点？（结构/标志词）1、I have already finished my homework.2、He has never heard such bad news.3、Have you ever been to Beijing?现在完成时表示过去发生或已经完成的某一动作对现在产生的影响现在完成时表示过去已经开始，持续到现在的动作或状态基本结构：主语

19、+have/has+过去分词过去分词（V.-ed）+句中常出现for+一段时间；since+时间点标志词观察并讨论：以下句子有何特点？（结构/标志词）1、He has lived here since 2001.2、We have studied English for six years.现在完成时表示过去已经开始，持续到现在的动作或状态基本结构过去分词变形规则1）AAA型型(三种都一样三种都一样)如：如：cost-cost-cost cut-cut-cut hurt-hurt-hurt shut-shut-shut set-set-set 2）ABB型型(过去式与过去分词相同过去式与过去分

20、词相同)如如:bring-brought-brought catch-caught-caught lead-led-led 过去分词变形规则1）A A A 型(三种都一样)如：c o s t-c o3 3）ABCABC型型(三种都不一样三种都不一样)如：begin-began-begun grow-grew-grown ring-rang-rung break-broke-broken 4 4）ABAABA型型(原形与过去分词相同原形与过去分词相同)如:come-came-come become-became-become run-ran-run 3）A B C 型(三种都不一样)如：b e

21、g i n-b e g a n-b e()1.You ve never seen such a wonderful film before,B_?A.havent you B.have you C.do you D.dont you()2.Mr.Green _ in China since five years ago.BA.lived B.has lived C.lives D.is going to live()3.His grandma _ for two years.DA.died B.has died C.was dead D.has been dead()4.A_ you _to

22、the United Stated?No,never,but I went to Canada a few years agoA.Have;been B.Have;gone C.Did;go D.Do;go()5.How long have you _ the football team of Dthe school?A.played B.been at C.joined D been in()1.Y o u v e n e v e r s e e n s过去完成时表示一个动作在过去某一个动作前已经发生或完成。基本结构：主语+had+过去分词过去分词（V.-ed）+分析主从句的时间先后顺序观察

23、并讨论：以下句子有何特点？（结构/标志词）1、We had finished the work when the boss came back.老板回来时我们已经完成工作了。2、I had learned English for three years before he came here.在他来这里前，我已经学了三年的英语。过去完成时表示一个动作在过去某一个动作前已经发生或完成。基本1.I didnt go to the film last week,because_.I had already seen it twice(我已经看过两次了)2.She _(给我们看showed us her dress裙子)she had just bought.3.He had learned English for three years_(三年)before he came _here.1.I d i d n t g o t o t h e f i l m l a s