八年级下现在完成时全面知识点

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初中英语现在完成时的知识点归纳

初中英语现在完成时的知识点归纳

初中英语现在完成时的知识点归纳知识点1:现在完成时的构成现在完成时由助动词have/has加上过去分词构成。

当主语是第三人称单数时,要使用has;其他情况下使用have。

例如:I have finished my homework.(我已经完成了作业)She has eaten breakfast.(她已经吃完早饭)知识点2:现在完成时的用法(1)表示过去发生的动作对现在产生的影响或结果,强调完成的结果。

例如:I have read that book.(我读过那本书)(强调现在了解并记住这本书的内容)(2)表示过去开始的动作一直持续到现在。

例如:She has lived in London for five years.(她在伦敦住了五年了)(强调过去到现在一直在伦敦住)(3)表示过去开始的动作一直持续到现在,可能还会继续下去。

例如:They have been friends since they were kids.(他们从小就是朋友)(强调过去到现在一直是朋友,可能还会继续保持朋友关系)知识点3:现在完成时的时间状语现在完成时常与以下时间状语连用:just(刚刚)、already(已经)、never(从来没有)、ever(曾经)、yet(还、仍然)、recently (最近)、since(自从)、for(持续了多久)等。

例如:I have just finished my homework.(我刚刚完成了作业)Have you ever been to America?(你去过美国吗?)They haven't seen each other since last year.(他们自从去年就没有见过面了)知识点4:现在完成时与一般过去时的区别现在完成时强调的是过去的动作对现在的影响或结果,而一般过去时只表示过去发生的动作或状态。

例如:He has lost his key.(他丢了钥匙,结果是他现在找不到)He lost his key.(他丢了钥匙)知识点5:现在完成时否定句和疑问句的构成现在完成时的否定句和疑问句构成是在助动词have/has之后加not 或否定词,疑问句将助动词have/has提到句首。

专题02 重点语法现在完成时-八年级英语下期末单元复习高分必备

专题02 重点语法现在完成时-八年级英语下期末单元复习高分必备

期末复习之现在完成时1. 常考点第一点:现在完成时的定义;第二点:现在完成时的四个句型(特殊疑问句、一般疑问句、肯定句和否定句);第三点:现在完成时的时间标志词;第四点:现在完成时和一般过去时的区别。

2. 常考题型覆盖题型广,单项选择、完形填空、词形变换、选词填空、短文填空、书面表达等等。

只要涉及到谓语动词的形式就和时态有关。

3. 解题技巧从时态的四个句型、时间标志词入手。

【技巧一】现在完成时只有一个结构,不用区分助动词结构和be动词结构;一般过去时分有两个结构,需要区分助动词结构和be动词结构。

【技巧二】时间标志词:recently, for + 一段时间, since + 过去的时间, just, already, yet,so far等;Have you opened your post yet?We've lived here since1994.He's already been gone four hours!【技巧三】连词前后的主语是同一个时,时态保持一致。

4. 针对训练:单项选择1.(2021·湖北武汉·八年级期末)—Where’s your father?—He’s not at home. He’s __________ Beijing for three days.A.gone to B.been to C.been in D.went to 2.(2021·湖北武汉·八年级期末)—Do you miss your parents in China?—Very much. I ________ my hometown for almost three years.A.left B.have leftC.was away from D.have been away from 3.(2021·江苏·无锡市滨湖区教育研究发展中心八年级期中)Meghan Markle, a famous actress, ___________ to Prince Harry for three years and they live a happy life.A.was married B.has married C.has been married D.has got married 4.(2021·江苏·无锡市滨湖区教育研究发展中心八年级期中)—Is Tom at home now?—No, he ___________ the supermarket. But he will come back soon.A.has gone in B.has gone to C.has been in D.has been to 5.(2021·广东·平远县教师发展中心八年级期末)Mr. Smith ________ this bag in 2009. He ________ it for many years.A.bought; has had B.bought; has bought C.has bought; has had D.has bought; had 6.(2022·北京东城·一模)Betty wants to buy her mother a birthday present, but she________ what to buy.A.doesn’t decide B.didn’t decide C.hasn’t decided D.won’t decide 7.(2022·江苏·苏州市振华中学校八年级期中)—What a nice watch! How long ________ you ________ it?—For two weeks.A.have; bought B.have; had C.did; buy D.are; having8.(2022·山东青岛·九年级期中)The film The Battle At Lake Changjin II is very touching and I ________ it twice.A.sees B.has seen C.have seen D.saw 9.(2022·贵州·玉屏侗族自治县教研室一模)The old women ________ in the park________ 8 o’clock.A.has been; since B.has come; since C.has been; for D.came; since 10.(2022·江苏·苏州市吴中区迎春中学八年级期中)The fish ______ for some time. You’d better cook them at once.A.have been dead B.has died C.have died D.has been dead 11.(2022·江苏·南京师范大学附属中学树人学校八年级期中)—__________ you__________ in your book report?—Not yet. I fell asleep when I was doing my homework last night.A.Are; handing B.Were; handing C.Did, hand D.Have, handed 12.(2022·天津西青·二模)—_______you ever_______the new stadium?—No, I haven’t.A.Do; visit B.Did; visit C.Are; visiting D.Have; visited E.13.(2022·北京大兴·一模)Mrs. Young ________ in Beijing since 2008. She loves this city. A.lives B.was living C.has lived D.will live 14.(2021·江苏·睢宁县树人中学二模)—Where is your report?—It is in Mrs Smith’s office now. I ________ on it for two hours.A.have worked B.worked C.will work D.am working 15.(2022·吉林长春·一模)— I hear the beginning of this movie is very exciting.— What a pity! When I got to the cinema yesterday, the film ________ for 10 minutes. A.began B.has begun C.has been on D.had been on 16.(2022·江苏·南京外国语学校八年级期中)Each of the girls ________ to the West Lake twice.A.has gone B.have gone C.have been D.has been 17.(2022·河北秦皇岛·一模)My hometown ________ a lot. Come and see the changes if you have time.A.changes B.changed C.will change D.has changed 18.(2022·河北·保定市第十七中学一模)I ________ the ticket to Guangfu Ancient City. Ican’t wait to see this famous cultural town.A.buy B.will buy C.was buying D.have bought 19.(2022·辽宁抚顺·三模)It has been five years ________ he graduated from that junior high school.A.since B.when C.till D.though 20.(2021·辽宁大连·八年级期末)Scientists haven’t discovered life on Mars ______. A.ever B.already C.yet D.just用所给单词的正确形式填空21.(2022·江苏·无锡市天一实验学校二模)As symbols of friendship, pandas ____ (live) in the US for 50 years.22.(2022·湖南省汉寿县教育研究室一模)Sally ________ (tell) her dream job to her parents already but neither of them agrees with it.23.(2021·广东·广州市黄埔区戎光实验学校八年级开学考试)I ________ (not hear) from my pen friend Anna since last year.24.(2022·内蒙古包头·一模)We’ve ________ a great new restaurant near the office. (find) 25.(2021·江苏·无锡市滨湖区教育研究发展中心八年级期中)—Jerry, please turn off the TV! The baby is sleeping.—There’s no need. He __________ (wake) up.26.(2021·江苏·无锡市滨湖区教育研究发展中心八年级期中)The basketball superstar Kobe Bryant has been __________ (die) for one year, but people still miss him so much. 27.(2021·山东·德州经济技术开发区教学研究室八年级期中)He ________ (write) more than 40 songs so far.28.(2022·江苏无锡·二模)—Mum, there’s one bottle of milk on the desk. Can I have it? I’m thirsty.—No, honey. It _________ (go) bad. Have some water instead.29.(2022·全国·九年级专题练习)—Elsa, what would you like to make for our party?—A delicious cake. In fact, I _________ (finish) making it.30.(2021·黑龙江·绥滨县教师进修学校八年级期末)—Have you __________ (clean) the house? —Yes, I have.31.(2016·江苏·九年级期中)Millie ________ (improve) her English since she attended junior high school.32.(2016·江苏无锡·九年级阶段练习)It began to rain heavily three days ago, the water in the river __________ (rise) a lot since then.33.(2016·江苏泰州·八年级期末)Modern medicine _______(develop) so quickly recently that many diseases can be cured.34.(2022·江苏·一模)-Would you care for a cup of Longjing tea? It tastes pretty good. -I _________ (have) one. Thank you all the same.35.(2021·江苏无锡·九年级期末)The waste these factories poured secretly ________ (pollute) the river and there are fewer fish in it now.36.(2021·江苏·南京师范大学附属中学江宁分校八年级阶段练习)I can’t open the door. Who_________(take)away my key.37.(2022·上海·七年级课时练习)________ you ________ (check) your suitcase yet? 38.(2022·全国·八年级课时练习)Have you ________________(receive) the letter from your pen pal?39.(2021·内蒙古·固阳县教育教学研究室八年级期末)The Three Body Problem is the best novel that I have ever ________. (read)40.(2022·湖南永州·九年级期末)V an Gogh has ________ (be) a famous painter for nearly 100 years.完成句子41.(2021·广东·广州市黄埔区戎光实验学校八年级开学考试)到目前为止,我们已经把这出话剧表演了两次。

八下知识点精讲——现在完成时

八下知识点精讲——现在完成时

现在完成时及动词不规则变化分类方法一.现在完成时1.构成:have/has + done2.肯定句、疑问句、否定句以及简短回答(以finish为例):[肯定句]I have finished.[否定句]I haven’t finished.[疑问句]Have you finished?[简短回答]Yes, I have./No, I haven’t.3.现在完成时的用法1.影响性(influence):过去发生的动作对现在产生的影响。

用法 2.持续性(continue):过去发生的动作一直持续到现在。

3.经历性(experience)*影响性:Have you finished yet?Yes, I’ve already finished.过去发生的动作对现在产生的影响,我们简称“影响性”。

标志词是already、yet和just。

Already用于肯定句,而yet用于否定句和疑问句。

*持续性:I’ve lived in Jinan for over 10 years.Since I met her, I’ve fallen in love with her.过去发生的动作一直持续到现在,我们简称“持续性”。

标志词为for 和since。

For后面要加一段时间,而since后面加一个时间点或是一个一般过去式的句子。

“持续性”的动词要用延续性的动词。

*经历性:I’ve been to Beijing twice.She’s not here. She’s gone to Europe.“经历性”的两个词组是“have been to”和“have gone to”。

Have been to是“去过(已经回来)”,而“have gone to”是“去了(还没回来)”。

标志词是ever, never, once, twice和“数词+times”。

注:现在完成时标志词(现在所学):Already, yet, just, for+时间段, since+时间点, once, twice,数词+times, ever, never, so far二:动词不规则变化分类方法(五条)1.AAA:let-let-let, hurt-hurt-hurt2.AAB(一个):beat-beat-beaten3.ABA:come-came-come,run-ran-run4.ABB:lose-lost-lost,get-got-got5.ABC:fly-flew-flown,swim-swam-swum。

初二现在完成时全解

初二现在完成时全解

【初二】现在完成时全解现在完成时是初二下学期要学到的语法内容,也是初中三年的重点和难点。

一. 现在完成时基本结构①肯定句:主语+have/has+动词的过去分词②否定句:主语+have/has+not+动词的过去分词③一般疑问句:Have/Has+主语+动词的过去分词④特殊疑问句:特殊疑问词+一般疑问句(have/has+主语+过去分词)二. 现在完成时用法1. 现在完成时用来表示过去已经完成的动作对现在造成影响或后果。

也就是说,动作或状态发生在过去但它的影响现在还存在,强调的是现在。

I have already posted the photo.我已经邮寄出了照片。

与此种用法连用的时间状语时一些模糊的过去时间状语,如already (肯定句), yet(否定句/疑问句), just, before, recently, still, lately, never 等。

2. 现在完成时也可用来表示动作或状态发生在过去某一时刻,持续到现在并且有可能会继续持续下去。

He has lived here since 1978.自从1978年以来,他一直住在这儿。

(动作起始于1978年,一直住到现在,可能还要继续住下去。

)此种用法常与for(+时间段),since(+时间点或过去时的句子)连用。

谓语动词必须是延续性动词。

有些瞬间动词可变为延续动词:go out----be outfinish----be overopen----be opendie----be deadbuy---havefall ill---be illcome back----be backcatch a cold----have a cold三. 现在完成时常见考法对于现在完成时的考查,多以单选、句型转换或词语运用的形式考查学生在具体语境中灵活运用时态的能力。

在考试中,会让大家判断是否该用现在完成时,或者是考查“瞬间动词”不能与表示一段时间的状语连用”这一知识点。

现在完成时(unit8--unit10知识点总结)人教版英语八年级下册

现在完成时(unit8--unit10知识点总结)人教版英语八年级下册

现在完成时一.定义三要素与构成〔has/have done〕1.表示到现在为止已经完成或刚刚完成的动作。

By now, I have remembered 1000 English words.2.一件发生在过去的事情对现在产生影响。

常见时间状语:常和already〔已经〕,yet〔已经〕,just〔刚刚〕,still〔仍旧〕,so far〔到目前为止〕,till now,(直到现在),before〔以前〕,ever〔曾经〕,3 times(三次),in the past/last..years(在过去几年)I have spent all of my money so far.(1)already:〔已经〕用于确定句位置:放于助动词与done 之间或者放在句末(2)yet:疑问句〔已经〕否认句〔还〕位置:常放句尾(3)ever(曾经):疑问/确定位置:助动词与done之间(4)never〔从不〕位置:助动词与done之间【练习】〔1〕——你吃过早餐了吗?—Have you had breakfast ____?——是的,我已经吃过了。

/不,我还没吃。

—Yes,I have ________ had it./No,I haven’t had it ____.〔2〕I have ______ read this book,so I don’t know what it is about.〔3〕—Have you _____ been to the Great Wall? It’s so wonderful and great.—No,I have ______ been there.3.一个动作开头于过去,并持续到现在〔或许还将持续下去〕。

常见时间状语:①for+一段时间“长达/持续了……②since+过去一个时间点,表示“自从……以来〞时间段+ago,表示“从……以前〞+for+时间段从句〔一般过去时〕eg:Mary has been ill for three days.We have been classmates since 2 years ago.【练习】〔1〕我已经住在这里十年了。

英语知识点:现在完成时(Present Perfect Tense)

英语知识点:现在完成时(Present Perfect Tense)

英语知识点:现在完成时(Present Perfect Tense)
3. 主谓一致 主语为第三人称单数时,助动词用has;其他情况用have。 六、练习题 1) 填空: a) She __________ (finish) her work already. b) They __________ (not see) this movie yet. c) __________ you ever __________ (be) to New York? d) He __________ just __________ (leave).
英语知识点:现在完成时(PreБайду номын сангаасent Perfect Tense)
3. 表示经历或经验 - 用于描述某人曾经有过的经历或经验。 - 例句:She has traveled to many countries.(她去过很多国家。) 4. 表示刚刚完成的动作 - 通常与just连用,表示刚刚发生或完成的动作。 - 例句:He has just finished his dinner.(他刚吃完晚饭。)
英语知识点:现在完成时(Present Perfect Tense)
五、注意事项 1. 区别一般过去时 一般过去时强调动作发生在具体的过去时间,而现在完成时强调对现在的影响或从过去持 续到现在。 示例: I went to the store yesterday.(一般过去时) vs.I have gone to the store.(现在完 成时) 2. 不可与具体的过去时间状语连用 如yesterday, last week等不能与现在完成时连用,但可以与不具体的时间状语连用,如 ever, never, before等。
英语知识点:现在完成时(Present Perfect Tense)

八年级英语现在完成时知识点

八年级英语现在完成时知识点

初中时态:现在完成时一.概念现在完成时表示过去发生并已经完成的动作对现在造成的影响,或过去某一时间开始并一直持续到现在,且又可能还会持续的动作或状态。

二.现在完成时的构成现在完成时的句式肯定句主语+have/has+动词过去分词+其他否定句主语+have/has not+动词过去分词+其他一般疑问句Have/Has+主语+动词过去分词+其他特殊疑问句特殊疑问词+have/has+主语+动词过去分词+其他?Who+have/has+主语+动词过去分词+其他?规则动词的过去式变化1.一般在词尾加“-ed”:help-helped、clean-cleaned2.以不发音的e结尾的词在词尾加“-ed”:like-liked、live-lived3、以“元音字母+y”结尾时,加“-ed”;以“辅音字母+y”结尾时,变y为i,再加“-ed”:play-played、stay-stayed; study-studied、carry-carried4、以一个元音字母加一个辅音字母结尾的重读闭音节动词,双写最后一个字母加“-ed”:stop-stopped、trip-tripped三.现在完成时的用法1.表示过去发生并已经完成的动作对现在造成的影响:I have heard of the man.2.过去某一时间开始并一直持续到现在,且又可能还会持续的动作或状态:I have lived in this city since I was born.四.常与一般现在时连用的时间状语already,yet(常用于否定句和疑问句中表示“仍,还”),before, recently,never,ever,once,twice等。

I have already finished my homework.固定的短语:for+一段时间,since+过去时间点+ago,so far, up to now,in the past/last three yearsI have been here since two months ago.五.难点拓展1.since和for的区别since用来说明动作的起始时间,for用来说明动作延续的时间长度。

英语人教版八年级下册现在完成时

英语人教版八年级下册现在完成时

现在完成时一、 (1) 概念:现在完成时表示过去发生或已经完成的动作:现在完成时表示过去发生或已经完成的动作,,对现在造成的影响或结果。

对现在造成的影响或结果。

1. I have already c leaned cleaned my room. 我已经打扫了我的房间。

我已经打扫了我的房间。

2. We have finished our homework. 我们完成了作业。

我们完成了作业。

3. They have swept the floor. 他们扫了地。

他们扫了地。

4. She has read t hat book. that book. 她读了那本书。

她读了那本书。

5. Tom has broken the window. Tom 打碎窗户。

打碎窗户。

现在完成时的构成现在完成时的构成: : 主语主语 + + + +1. I haven haven’’t cleaned my room yet. 我还没打扫了我的房间。

我还没打扫了我的房间。

2. We haven haven’’t finished our homework. 我们没完成作业。

我们没完成作业。

3. They haven haven’’t swept t he floor. the floor. 他们没扫地。

他们没扫地。

4. She hasn hasn’’t read t hat book. that book. 她没读那本书她没读那本书5. Tom hasn hasn’’t broken t he window. Tom the window. Tom 没有打碎窗户。

没有打碎窗户。

否定句否定句: : 主语主语主语 + + + + + +1. Have you c leaned cleaned my room?Yes,I have.2. Have y ou you finishedour homework? No,I haven ’t. 3. Have they swept t he floor?the floor? Yes,they have. No,they haven ’t.4. Has she read t hat book?that book? Yes,she has. No,she hasn hasn’’t.5. Has Tom broken t he window?the window? Yes,Tom has. No,Tom hasn ’t.一般疑问句一般疑问句: : 助动词助动词助动词 + + ? + + ?(2) 现在完成时的基本句型:肯定句:肯定句:否定句否定句: : 一般疑问句:一般疑问句:二、现在完成时标志词1.I have already lost the key.2.She hasn ’t told us the news yet .3.Have you decided to go yet ?4.I have just cleaned my hands.5.John has never been to Nanjing6.Have you ever been to a museum?7.He has stayed here since 5 5 o o ’clock.David has lived here since 1992.8.He has has stayed stayed stayed here here since 5 5 hours hours hours ago. ago.His father has been in the Party since 10 years ago.9.She has taught English since he he came came came here. here.She has taught us since I came to this school.10.He has kept the book for 2 weeks.I have had this dictionary for t hree years.three years. Since: (自…以来)(1)(2)(3)for(长达)just (谓语动词之前谓语动词之前谓语动词之前) before() before(句末)句末) so far so far 到目前为止到目前为止in the past/last few years(过去几年来过去几年来) )练一练:练一练:选用选用 for for 和 since 填空填空: :1.We haven ’t seen each other ______ a long time.2.His father has been in the Party ______ 10 years ago.3.The film has been on ______ 20 minutes.4.Mr Green has worked here ______ he came to China.5.His grandparents have been dead ______ several years.6. It ’s five years _______ we met last time.1.The house is dirty. We _______it for weeks.A didn ’t cleanB hadn ’t cleanedC don ’t cleanD haven ’t cleaned2. ---Have you found your keys _______---Yes, I have _______ found them.A already; yetB yet;alreadyC already;alreadyD yet;yet3.3. -- I ’m sorry to keep you waiting.--Oh, not at all. I _____here only a few minutes.A have beenB had beenC wasD will be4.4. You don ’t need to describe her. I _______ her several times. A. had met B have met C met D meet5. --Will you go to Beijing for vacation ?--I _______ to go , but I don ’t know if I can go .A was planningB have plannedC had been planningD have been planning planning6. --When will they leave ?--They ______very soon .A do leaveB are leavingC have leftD leave7 --Was he studying for an exam ?--Yes , he's ____ it last week.A doingB to takeC makingD to give8.The teacher told the pupils that the earth ____ round.A isB wouldC wasD were9.9. She _______ such an interesting book before.A was never readingB will never readC had never readD has never rea10.10. How long do you think the meeting ______A is lastingB is lastedC will lastD lasts11. 11. I ____________(wait) for him for two hours . I am very angry . I ____________(wait) for him for two hours . I am very angry .12. 12. He _________ (be) a doctor since he was twenty .13. 13. The film __________ (be) on for fifteen minutes .14. 14. ____ you ever ____ (read) that book before ?15. 15. ____ you ever ____ (try) to change her ?16. 16. No one ____________ (arrive) here yet . No one ____________ (arrive) here yet .17. 17. ______ the bus _____ (leave) yet ?18. 18. I____ I____ I____ already already already ______ ______ ______ (see) (see) (see) the the the film. film. film.19. 19. My My My father father father ____ ____ ____ just just just _____ _____ _____ (come) (come) (come) back back back from from from work. work.20. 20. I I I _____________ _____________ _____________ (work) (work) (work) here here here since since since I I I ______ ______ ______ (move) (move) (move) here here here in in in 1999. 1999. 21. 21. So So So far far far I I I _______________(make) _______________(make) _______________(make) quite quite quite a a a few few few friends friends friends here. here.22. 22. -How -How -How long long long _______ _______ _______ the the the Wangs Wangs Wangs _______(stay) _______(stay) _______(stay) here? -For here? -For two two weeks. weeks. weeks.23. 23. I I I ________ ________ ________ just just just ___________ ___________ ___________ (finish) (finish) (finish) my my my homework. homework. homework.24.______ 24.______ you you you ______ ______ ______ (find) (find) (find) your your your science science science book book book yet? yet?一般过去时与现在完成时之比较1)一般过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作,和现在不发生关系。

(完整版)八年级下现在完成时全面知识点

(完整版)八年级下现在完成时全面知识点

(完整版)⼋年级下现在完成时全⾯知识点⼀现在完成时概念及⽤法:1 表⽰过去发⽣或已经完成的动作对现在造成的影响或结果。

常和just(刚刚),already(已经),yet(已经),never(从不),ever (曾经),before(以前),so far(到⽬前为⽌)等时间状语连⽤。

2 表⽰从过去某⼀时刻开始⼀直持续到现在的动作或状态,还有可能继续下去,常和for或since引导的时间状语连⽤。

此时的动词必须是延续性动词。

构成:have/ has(助动词)+V过去分词肯定句:主语+ have/ has+V过去分词+其他否定句:主语+ have/ has+not+V过去分词+其他⼀般疑问句:have/ has+主语+ +V过去分词+其他肯定回答:Yes, 主语+ have/ has.否定回答:No, 主语+ haven’t/ hasn’t.3 常⽤标志词语already, never, ever, just, before, so far, yet ,since+过去的时间点,for+⼀段时间等already常⽤于肯定句;yet⽤于否定句和疑问句。

⼆常⽤句型结构辨析(⼀)have/has been to / have / has gone to / have/ has been in 辨析:⑴ have/ has been to + 地名“曾经去过某地” , 现在已经回到原地。

He has been to England twice.他曾经去过英国两次。

(现在已经不在英国了)Have you ever been to the Great Wall?你到过长城吗?(现在已经不在长城上)⑵have gone to + 地名“已经去某地了”,说话时该⼈不在现场。

He has gone to England。

他已去英国了。

(已经不在说话的地⽅,到达英国或者在去英国的路上)⑶ have been in +地点待在某地,常与时间段搭配。

八下英语现在完成时知识点

八下英语现在完成时知识点

八下英语现在完成时知识点
现在完成时是英语中的一种时态,用来表示过去发生的动作对现在产生的影响或者与现在有关的动作。

现在完成时的构成是由助动词“have/has”和动词的过去分词构成的。

现在完成时通常用于以下情况:
1. 表示过去发生的动作对现在产生的影响,强调动作的结果或者延续到现在。

例如,I have finished my homework.(我已经完成了我的作业。

)。

2. 表示过去开始的动作一直延续到现在,或者强调动作的持续性。

例如,She has lived in Paris for five years.(她已经在巴黎住了五年了。

)。

3. 表示过去发生的动作对现在的情况产生影响,或者强调动作的经验性。

例如,I have visited the Great Wall.(我去过长城。

)。

4. 表示刚刚完成的动作,常与just, already, yet等时间状语连用。

例如,They have just left.(他们刚刚离开。

)。

需要注意的是,现在完成时常与一些时间状语连用,如for, since, just, already, yet等,以表明动作发生的时间或者持续的时间。

另外,现在完成时通常不与表示具体时间点的时间状语连用,而是与表示时间段或者延续性的时间状语搭配使用。

总之,现在完成时是英语中一个重要的时态,用来表示过去动作与现在的关系,需要根据不同的语境和句子结构来正确运用。

希望这些知识点能够帮助你更好地理解现在完成时的用法。

现在完成时知识点详解初中

现在完成时知识点详解初中

现在完成时知识点详解初中现在完成时(Present Perfect Tense)是英语中的一种时态,用来表示与过去时间点有关的动作或情况,特点是强调对现在的影响或结果。

现在完成时由助动词 "have/has" 加上动词的过去分词构成。

一、构成:1. 肯定句结构:主语 + have/has + 过去分词 + 其他成分2. 否定句结构:主语 + have/has + not + 过去分词 + 其他成分3. 疑问句结构:Have/Has + 主语 + 过去分词 + 其他成分?二、用法:1.表示过去发生的动作对现在产生的影响或结果。

如:- He has finished his homework.(他完成了作业,结果是现在他可以去玩。

)2.表示过去开始并一直延续到现在的动作或情况。

如:- They have lived here for 10 years.(他们在这里住了10年了,强调他们一直住在这里)- she has studied English since she was young.(她从小就学英语,一直到现在都在学)3.表示一个过去经历或发生过的事件,时间不明确。

如:- Have you ever been to Paris?(你去过巴黎吗?)- I have seen that movie before.(我以前看过那部电影。

)4.表示以前曾经做过的经历或动作。

如:- Have you ever tried sushi?(你试过寿司吗?)三、注意事项:1. 标志词:already(已经)、yet(还),常与现在完成时连用。

2.与一般过去时的区别:4. 主要使用have的情况:- 我们一般用have作为第一人称(I、we)和第二人称(you)的助动词,用has作为第三人称(he、she、it)的助动词。

如:- I have seen the movie.- He has read the book.- 固定搭配中使用have:- have breakfast/lunch/dinner(吃早饭/午饭/晚饭)- have a shower/bath(洗澡)- have a look(看一看)- have a rest(休息)。

人教版八年级下册现在完成时专项讲解

人教版八年级下册现在完成时专项讲解

现在完成时现在完成时(present perfect tense)通常表示过去发生的动作一直延续到现在,而且还可能继续下去,或者表示过去的行为对现在造成一定的影响,可能还会产生结果等。

1.现在完成时结构1.1.助动词have/has+动词过去分词。

其中,助动词要随着主语的变化而变化,当主语是第三人称单数时,助动词要用“has”。

例:Have you finished your work?He says that he has seen UFOs many times.1.2.现在完成时的缩写形式:I have=I ’ve have not= haven’thas not= hasn’t例:I’ve finished my work./He hasn’t finished his work.1.3.现在完成时的一般疑问句:Have/Has+主语+动词的过去分词+其他?肯定回答:Yes,主语+have/has.否定回答:No,主语+haven’t/hasn’t.例:----Have you finished your work?----Yes,I have./No,l haven’t.----Have they arrived?----Yes,they have./No,they haven’t. 1.4.1.通过加-ed的形式来构成规则动词的过去分词,就像我们构成这些动词的过去式方法一样。

大多数动词后+ed.如finish---finished.以字母e为结尾的动词后+d,如change---changed.以辅音字母加y结尾的动词,去掉y,再加ied.如carry---carried.以一个元音再加一个辅音结尾的短动词,双写辅音辅音字母再加ed.如stop---stopped1.4.2.构成不规则动词的过去分词的方法有所不同,需要特别记忆。

如:come---come; hurt---hurt. lend---lent; build---builtcatch---caught; keep---kept forget---forgotten tell---toldbe---been; have---had fall---fallen; fly---flowndraw---drawn; see---seen;think---thought.2.现在完成时的用法2.1.表示过去发生或已经完成的动作,对现在造成的影响或结果。

初中英语现在完成时知识点

初中英语现在完成时知识点

初中英语现在完成时知识点现在完成时(Present Perfect Tense)是表示过去发生的动作或状态对现在造成的影响或结果的一种时态。

以下是现在完成时的知识点:1. 构成:现在完成时由助动词“have/has”和动词的过去分词构成。

其中,主语为第三人称单数时,要用“has”,其余情况下使用“have”。

2. 动词的过去分词形式:大多数动词的过去分词形式为动词的原形加上-ed,例如:played, watched, walked。

但也有许多不规则动词的过去分词形式需要特别记忆,例如:seen, gone, eaten。

3.现在完成时的用法:a. 表示过去的经历或经验,通常与时间状语从句连用,例如:Ihave been to Paris.(我去过巴黎。

)b. 表示过去已经发生的动作对现在造成的影响或结果,通常与already, yet, just等时间状语连用,例如:I have already finished my homework.(我已经完成作业了。

)d. 表示过去开始的动作一直持续到现在,通常与for, since等表示时间段的状语连用,例如:I have lived in this city for ten years.(我在这个城市已经住了十年。

)e. 表示过去曾经发生但不再发生的动作,通常与表示过去的时间状语连用,例如:I used to visit my grandparents every summer whenI was a child.(我小时候每个夏天都去看望我的祖父母。

)f. 表示过去已经做过或尚未做过的动作,通常与表示时间的状语连用,例如:Have you finished your homework?(你完成作业了吗?)g. 表示过去未完成的动作,通常与since和for连用,表示自从过去一些时间以来一直持续到现在的动作,例如:She has been studying English since 2024.(她从2024年起一直在学习英语。

现在完成时知识点归纳总结

现在完成时知识点归纳总结

现在完成时知识点归纳总结现在完成时是英语中一个重要的时态,用于表示过去发生的动作或事情对现在产生的影响或结果。

下面是对现在完成时的知识点进行归纳总结:一、现在完成时的构成现在完成时的构成由“助动词have/has + 过去分词形式的动词”组成,其中have用于第一人称(I, we)以及第二人称(you),has用于第三人称单数(he, she, it)。

1. 肯定句的构成:主语 + have/has + 过去分词形式的动词例如:- I have studied English for three years.- He has finished his homework.2. 否定句的构成:主语 + have/has + not + 过去分词形式的动词例如:- She hasn't visited London yet.- We haven't seen the movie.3. 疑问句的构成:Have/Has + 主语 + 过去分词形式的动词 + 其他?例如:- Have you ever traveled abroad?- Has she lived in this city before?二、现在完成时的用法1. 表示过去的行动或事件对现在的影响或结果。

例如:- She has lost her keys. (她现在找不到她的钥匙。

)- He has worked hard, so he is tired. (他过去努力工作,所以他现在很累。

)2. 表示从过去某个时间开始一直持续到现在的动作或状态。

例如:- They have lived in the same house for 10 years. (他们从10年前开始就一直住在同一栋房子里。

)- I have known him since we were kids. (我从我们还是孩子的时候就认识他了。

)3. 表示过去经历的事情或已经完成的动作。

现在完成时知识点归纳与总结

现在完成时知识点归纳与总结

现在完成时知识点归纳与总结一、构成。

“have/has + 过去分词”二、用法。

1. 表示过去发生或已经完成的动作对现在造成的影响或结果。

- I have lost my key. (我把钥匙丢了,导致现在进不了门。

)2. 表示过去已经开始,持续到现在的动作或状态。

- We have lived here for ten years. (从过去到现在一直住在这里。

)三、时间状语。

1. already(已经),yet(还,尚未)- I have already finished my homework. (肯定句中用 already)- Have you finished your homework yet? (否定句、疑问句中用 yet)2. ever(曾经),never(从不)- Have you ever been to Beijing?- I have never seen such a beautiful place.3. just(刚刚)- He has just come back.4. so far(到目前为止),up to now(直到现在)- So far, we have learned five units.5. for + 时间段,since + 时间点。

- I have known him for five years.- She has been here since 2010.四、have been to / have gone to 的区别。

1. have been to 表示“去过某地(已回)”。

- I have been to Shanghai twice.2. have gone to 表示“去了某地(未回)”。

- He has gone to Beijing. (说明他不在说话地,去北京了。

)五、现在完成时与一般过去时的区别。

1. 现在完成时强调过去的动作对现在的影响,一般过去时只强调过去的动作,与现在无关。

人教版英语八年级下册Unit8语法全解:现在完成时

人教版英语八年级下册Unit8语法全解:现在完成时

语法全解:现在完成时一、现在完成时的构成〔一〕肯定式主语+助动词have/has+过去分词+其它.说明:这里的have/has是助动词,没有什么具体意义。

当主语是第三人称单数时助动词用has,其余人称一律用have。

has, have的缩略式分别为’s或’ve。

规那么动词过去分词的构成与过去式的构成方式一样,不规那么动词可参看不规那么动词表。

实例:1) I’ve just copied all the new words.我刚抄写了所有的生词。

(表示不要再抄了)2) She has lost her books.她丧失了她的书。

〔表示到目前为止还没有找到〕(如果用过去时:She lost her books.那么强调书是过去丢的这一动作,而不知现在有没有找到。

)3) We’ve just cleaned the classroom. 我们刚好清扫了教室。

〔说明现在教室是干净的〕〔二〕否认式主语+助动词have/has+not+过去分词+其它.说明:现在完成时构成否认句时,只需在助动词have/has后面加not就行。

have not, has not的缩略式分别为haven’t, hasn’t。

另外,肯定句中有some, already时,改为否认时要分别改成any, yet。

例:1)I haven’t finished my homework yet.我还没有完成我的作业。

2)She hasn’t travelled on a train. 她没有坐火车旅行过。

3)We have never spoken to a foreigner.我们从来没有和外国人说过话。

注:有时not可以用never代替,表示“从来没有〞的意思。

又如:4) I have never seen him before.以前我从来没有见过他。

〔三〕一般疑问式助动词Have/Has +主语+过去分词+其它?说明:把陈述句中的have或has放到句首,句末打问号,同时把句中的some, already改为any, yet就构成了一般疑问句。

八年级下英语--现在完成时语法讲解

八年级下英语--现在完成时语法讲解

八年级下册必考知识点---现在完成时现在完成时(I)语法知识定义:(1)表示过去发生或已经发生的动作对现在造成的影响或结果,这个影响和结果对现在还必须存在.常与already(已经), yet(已经,还), just(刚刚),ever(曾经),never 等词连用.常用于肯定句或疑问句(均表示:已经).常用于否定句(表示:还、尚),疑问句末尾(表示:已经).现在完成时的构成及句型结构:(注:过去分词的变化分规则变化与不规则变化,规则变化与动词原形变过去式一样,不规则变化见教材最后面)1.肯定句:主语+have/has+过去分词+其他+时间.eg: I have already lost the key. 我已经弄丢了钥匙. (我现在没有钥匙) He has ever read that book . 他曾经看过这本书. (了解书的内容)They have just cleaned their hands. 他们刚刚洗过手了. (手是干净的)2.否定句:主语+haven’t/ hasn’t+过去分词+其他+时间.eg: I haven’t lost the key yet.He hasn’t ever read that book .They haven’t just cleaned their hands.3.一般疑问句:Have/Has+主语+过去分词+其他+时间?肯定回答:Yes, 主语+have/ has. 否定回答:No, 主语+haven’t/hasn’t. eg: Have you already lost the key? Yes, I have. No, I haven’t. Has he ever read the book? Yes, he has. No, he hasn’t.Have they just cleaned their hands? Yes, they have. No, they haven’t.4.特殊疑问句:特殊疑问词+have/has+主语+过去分词+其他+时间?eg: What have you already done? (done是do/does的过去分词)What has he ever done?What have they just done?定义:(2)现在完成时表示从过去开始一直持续到现在还有可能继续持续下去的动作或状态。

初中英语人教版八年级下册unit8-unit10现在完成时知识梳理

初中英语人教版八年级下册unit8-unit10现在完成时知识梳理
一般疑问句 Have/has+主语+过去分词+其他
Have you read this book.
肯定回答 Yes,I have.
否定回答 No,I haven't.
现在完成时的用法
用法一 表示过去发生或已经完成的动 作对现在造成的影响。 e.g. I have spent all of my money so far. 用法二 表示过去某一时刻发生持续到 现在的动作或状态。常与for+时间 段,since+时间点/一段时间+ago /过去 时态的句子连用。 e.g. Marry has been ill for three days.=Marry has been ill since three days ago. e.g. I have lived here since 1998 e.g. I have been in Shanghai since I was four.
短暂性动词
其他 e.g.It's two years since his father died.
现在完成时 Present Perfect Tense
基本结构
助动词have/has+过去分词(done)
基本句型 肯定句 主语+have/has+过去分词+其他
I have read this book. 否定句 主语+have/has not+过去分词+其他 I haven't read this book.
现在完成时的常用标志词
already yet ever so far before等 句中动词的特点
在现在完成时中非延续性动词 ( buy,die,come,,go,leave,join等)不能直 接与f来自r或since引导的时间状语连用。

初中英语人教新目标八年级下册现在完成时语法知识精讲

初中英语人教新目标八年级下册现在完成时语法知识精讲

八年级英语下册现在完成时知识精讲一、定义现在完成时主要用来表示过去发生的动作对现在造成的影响或结果。

如:I have already seen the film.She has just had a bath.第一句说明看电影是过去发生的,用了现在完成时是要表示说话者可能不想再看了,或者对该电影的内容已经很熟悉了,等等。

第二句说明她洗澡是过去发生的,用了现在完成时是要表示她不需要再洗澡了等。

二、基本结构现在完成时的句子结构一般为:肯定句主语+have/has+过去分词+其他成分We have already had lunch.He has been away for a week.肯定句:主语+have/has+动词的过去分词+其他否定句:主语+have/has+not+动词的过去分词+其他一般疑问句:Have/Has+主语+动词的过去分词+其他特殊疑问句:特殊疑问词+一般疑问句(have/has+主语+过去分词+其他)三、主要用法1、表示过去发生并且已经完成的动作对现在造成的影响或结果。

此时,常和谓语动词一起使用的副词有already、just、never、ever、yet等。

如:They have already come back from the museum.She has already finished her homework.2、表示一个动作或状态从过去开始,一直延续到现在,还可能继续下去。

此时常与:for +时间段、since+过去时间点、since+一般过去时态的从句、since+一段时间+ago、 in the past/last +时间段连用。

谓语动词用延续性动词,可以用how long提问。

→for + 一段时间I have learned English for 8 years→since + 过去的一个时间点I have learned English since 2001→since + 时态为一般过去时的时间状语从句I have learned English since I was 5 years old注意:现在完成时中,与一段时间连用时应注意句中的谓语动词须是延续性动词,非延续性动词不可和一段时间连用。

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八年级下现在完成时全
面知识点
Company Document number:WTUT-WT88Y-W8BBGB-BWYTT-19998
一现在完成时概念及用法:
1 表示过去发生或已经完成的动作对现在造成的影响或结果。

常和just(刚刚),
already(已经),yet(已经),never(从不),ever (曾经),before(以前),so far(到目前为止)等时间状语连用。

2 表示从过去某一时刻开始一直持续到现在的动作或状态,还有可能继续下去,常和
for或since引导的时间状语连用。

此时的动词必须是延续性动词。

构成:have/ has(助动词)+V过去分词
肯定句:主语+ have/ has+V过去分词+其他
否定句:主语+ have/ has+not+V过去分词+其他
一般疑问句:have/ has+主语+ +V过去分词+其他
肯定回答:Yes, 主语+ have/ has.
否定回答:No, 主语+ haven’t/ hasn’t.
3 常用标志词语
already, never, ever, just, before, so far, yet ,since+过去的时间点,for+一段时间等
already常用于肯定句;yet用于否定句和疑问句。

二常用句型结构辨析
(一)have/has been to / have / has gone to / have/ has been in 辨析:
⑴ have/ has been to + 地名“曾经去过某地” , 现在已经回到原地。

He has been to England twice.他曾经去过英国两次。

(现在已经不在英国了)
Have you ever been to the Great Wall你到过长城吗(现在已经不在长城上)
⑵have gone to + 地名“已经去某地了”,说话时该人不在现场。

He has gone to England。

他已去英国了。

(已经不在说话的地方,到达英国或者在去英国的路上)
⑶ have been in +地点待在某地,常与时间段搭配。

I have been in Shanghai for three years.
(二)since与for区别:
1)for其后只能接表示“一段时间”的名词性短语,可用于多种时态。

表示动作或状态持续的时间长短;
since其后接表示“时间点”的短语或从句(一般过去时);也可以接“一段时间+ago”,常用于完成时态;还用于句型“It’s+时间段+since+一般过去时态的句子”。

表示过去某个时间发生并持续至说话时的动作或状态。

I’ve lived in this city for five years.
He usually sleeps for 12 hours every day.
We’ve studied here since 2009.
She has worked here for five years.
It’s two years since I came to China.
练习:用since 和for填空
1.Jim has been in Ireland last Monday.
2.Jill has been in Ireland three days.
3.His aunt has lived in Australia 15 days.
4.Mike has been ill a long time. He has been in hospital 0ctober.
2)for 与since引导的时间状语可以进行相互替换
My uncle has worked at this factory for five years.
=My uncle has worked at this factory since five years ago.
练习:
I have studied English for five I have studied English .
(三)延续性动词与非延续性动词
延续性动词表示经过、经历;非延续性动词表示行为的结果,不能与表示一段时间的状语连用。

I’ve known him since then. 表经历
He has finished the work. 表结果
(1)延续性动词与非延续性动词的用法:
①非延续性动词与短暂性时间(点)连用
非延续性动词也被称为终止性动词、瞬间动词,表示不能延续的动作,这种动作发生后立即结束。

如:open, die, close, begin, finish, come, go, move, borrow, lend, buy等。

非延续性动词在肯定句中与表示时间点的状语连用,如two years ago.
He joined the Army three years ago.
②非延续性动词可用于“It is/has been +时间段+since”句型
It is/has been three years since I bought the book.从我买这本书到现在3年了。

I began to study English three years ago.
It is since I study Enlish.
I moved to Changchun 5 years ago.
.
Lily finshed her homework 2 hours ago.
.
③延续性动词表示能够延续的动作,如:learn, work, stand, know, walk, keep, wait, watch, read, sleep, live, stay等。

延续性动词可以与表示时间段的状语for+段时间/since+时间点/since引导的从句(过去时)/since+段时间+ago等连用。

(2)非延续性动词与延续性动词之间的转换:
①非延续性动词转换为相应的延续性动词,用于现在完成时态,时间状语为for+段时间/since+时间点/since引导的从句(过去时)/since+段时间+ago The old man died 4years ago.
=The old man has been dead for 4 years.
I borrowed the book 5 days ago.
=I have kept the book since 5days ago.
borrow-keep buy-have catch a cold-have a cold put on-wear get to know-know get to sleep-sleep
②非延续性动词转化为“be+ adj 、adv、prep、n”
begin/start-be on go out-be out get to/arrive in/reach-be in die-be dead open-be open
leave- be away finish-be over fall ill-be ill get up- be up fall asleep-be asleep join-be a member of go to school- be in school become-be make friends-be friends
come/go-be+相应的介词短语
练习-同义句转换:
1 I bought the dictionary last year.
I have the dictionary one year.
2 The film began 5 minutes ago.
The film for 5 minutes.
3 His grandfather died 5 years ago.
His grandfather for 5 years.
4 His uncle left the city 2 hours ago.
His uncle the city 2 hours.
三现在完成时与一般过去时的区别:
(1)一般过去时表示过去发生的动作或存在的状态;现在完成时表示过去发生的某一动作对现在造成的影响或结果。

强调的是现在的情况。

I saw this film yesterday. I have seen this film.
(2)一般过去时时间状语:yesterday, last year, 时间+ago, in 1990, just now…
现在完成时时间状语:ever、never、yet、already、recently、so far…。

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