完成时
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什么时候用完成时①表示动作发生在过去某个不确定的时间,但对现在留下了某种影响和结果。
常被just、already、yet等副词修饰。
如:-Have you had lunch yet? -Y es, I have. I've just had it.你(已经)吃午饭了吗?我刚刚吃过。
(现在我不饿了)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。
这个动作可能刚停止,可能仍然在进行。
常带有for和since等表示一段时间的状语。
如:He has taught here since 1981他自1981年就在这儿教书。
(可能还要继续教)I haven’t seen her for four years.3 现在完成时用法总结⑴与时间状语so far, till now, up to now, for + 一段时间, before, ever, never, recently, just, already, yet 等时间状语的句子中, 谓语常用现在完成时.I have planted fourteen trees so far.Have you ever been to Europe before?I have learned English for three years.She has not yet studied French well.⑵用在特定句型中ⅰThis /It is the first /second…/last time (that) …” that常省略, 表示“这是某人第几次做某事” 常常用完成时态. 如果主句用一般现在时, 从句用现在完成时。
主句用一般过去时, 从句用过去完成时。
It is the third time that I have seen the film.It is my first time that I have been to Shanghai.It was the first time I had seen a fantasy film.ⅱIt is / has been… since…句型中, 主句常用现在完成时,但since从句用一般过去时.It has been three years since she graduated from Beijing University.自她北大毕业以来已经三年了.ⅲThis is one of the most attractive places I’ve been to. 被形容词最高级所修饰的名词后的定语从句中,一般用完成时态。
完成时的四种时态的基本结构完成时态是英语中最常用的时态之一,它表示过去某个时间点或时间段已经完成的动作或状态。
完成时态有四种基本结构,分别是现在完成时、过去完成时、将来完成时和完成进行时。
下面将分别介绍这四种时态的基本结构和用法。
一、现在完成时现在完成时的基本结构是“have/has + 过去分词”,其中have用于第一人称单数、第二人称单数和复数,has用于第三人称单数。
现在完成时表示过去发生的动作或状态对现在造成的影响或结果,常用于以下情况:1. 表示过去发生的动作或状态对现在造成的影响或结果,如:I have lost my keys.(我丢了我的钥匙。
)She has been studying English for five years.(她已经学习英语五年了。
)2. 表示过去发生的动作或状态一直持续到现在,如:I have lived in this city for ten years.(我在这个城市住了十年了。
) He has worked for this company since 2010.(他自2010年以来一直在这家公司工作。
)3. 表示过去发生的动作或状态与现在有关联,如:I have just finished my homework.(我刚刚完成了我的作业。
)She has already left for the airport.(她已经去机场了。
)二、过去完成时过去完成时的基本结构是“had + 过去分词”,表示在过去某个时间点或时间段之前已经完成的动作或状态。
过去完成时常用于以下情况:1. 表示过去某个时间点或时间段之前已经完成的动作或状态,如:I had finished my work before he arrived.(他到达之前我已经完成了我的工作。
)She had lived in Paris for two years before she moved to London.(她在搬到伦敦之前在巴黎住了两年。
现在完成时的三种基本用法
现在完成时是英语中最常用的时态之一,它表示过去发生的动作或状态对现在产生的影响。
现在完成时有三种基本用法,分别是表示经验、表示持续状态和表示完成的动作对现在的影响。
一、表示经验
现在完成时可以用来表示一个人的经验或经历。
例如,“我已经去过巴黎了”表示我曾经去过巴黎,这是我的经验。
这种用法通常和时间状语连用,如“已经”、“曾经”、“从来没有”等。
二、表示持续状态
现在完成时还可以用来表示一个动作或状态从过去一直持续到现在。
例如,“我已经学习英语十年了”表示我从十年前开始学习英语,一直到现在还在学习。
这种用法通常和时间段连用,如“十年”、“三个月”等。
三、表示完成的动作对现在的影响
现在完成时还可以用来表示一个动作已经完成,但对现在产生了影响。
例如,“我已经吃过晚饭了”表示我已经吃完了晚饭,但这个动作对现在的状态有影响,我现在不饿了。
这种用法通常和表示现在状态的词连用,如“饿”、“累”、“渴”等。
现在完成时是英语中非常重要的时态,它可以用来表示经验、持续状态和完成的动作对现在的影响。
在学习英语时,我们需要掌握这三种基本用法,以便更好地运用现在完成时。
现在完成时:用法一:持续到现在的动作或状态开始于过去的动作一直持续到现在,而且还可能持续下去(状态、习惯等)。
谓语动词一般为延续性动词(last, continue, know, want, be, work, study, teach, live ……)。
特点:1.动作发生的时间是过去,但这一动作持续到现在,而且还可能继续持续下去。
2.与这种用法的现在完成时态连用的时间状语通常是表示“一段时间”的时间状语,以说明某个动作或状态持续了多久。
(since+时间点,for+时间段,untill now,up till now, so far. In the past few years, over the past few years. during, through centuries, throughout history等)。
用法二:过去发生但与现在仍有联系的动作或状态表示不确定的过去发生的某一动作对现在仍有影响。
谓语动作一般为短暂性的动词。
例句:he has broken his leg 言外之意就是now he is still in hospital,so he can't go out for outing with his classmates.He broke his leg. 单纯表示一种过去的经历,但现在腿已经好了。
使用短暂动词的肯定句不可与“一段时间”的时间状语连用,但否定句表示尚未发生的事情可理解为一种状态,从而可以表示延续。
Eg. I haven't heard from my girlfriend since I came to America. (词句写成肯定句就是错误表达)用法三:表示到目前为止,一段时间内重复发生的动作谓语动词可以使持续的也可以是短暂的。
Eg, I have taken three tests so far this week.(短)For more than eight years, scientists have argued over whether life exists on the planat Mars.(持)其他用法结构表达:This is the third time that I've come to Beijing.This is the most intereting movie that I've ever seen.综述:现在完成时总是与现在有着密切关系:或是表示到现在为止这段时间“一直在持续”或“重复发生”的动作或状态;或是表示“影响现状”的事件。
现在完成时的三种含义
现在完成时是英语中的一个时态,表示动作已经完成,但与现在仍有联系。
它可以有以下三种含义:
1. 表示过去完成的动作对现在造成的影响
例如:I have lost my car keys. (我丢了车钥匙)
这句话中,现在完成时表示“我丢了车钥匙”,这个动作已经完成了,但是对现在仍有影响,即我现在找不到车钥匙。
2. 表示从过去到现在发生的一段时间内已完成的动作
例如:I have been studying English for five years. (我已经学英语五年了)
这句话中,现在完成时表示“我已经学英语五年了”,这个动作是从过去一直持续到现在,已经完成了五年。
3. 表示刚刚完成的动作
例如:I have just finished my homework. (我刚做完作业) 这句话中,现在完成时表示“我刚做完作业”,这个动作是刚刚完成,与现在有直接联系。
- 1 -。
现在完成时用法大全1.现在完成时是表示过去动作对现在造成影响和结果的时态,常用时间状语如many times。
just。
yet。
ever。
never。
already。
so far。
by now等。
另外,现在完成时也可以表示动作或状态从过去开始一直持续到现在,常与so far、for或since等短语连用。
例如,He has been working here since last year.2.现在完成时的构成是have/has+过去分词,例如I have XXX.3.现在完成时的四个基本句型包括肯定句、一般疑问句、否定句和特殊疑问句。
例如,XXX the work。
He has not finished the work。
What has he done?4.在使用现在完成时时,常用的九个词语包括already。
yet。
ever。
never。
just。
before。
so far。
how long和how many times,以及两个词组have/has gone to和have/has been to。
例如,I have already found my pen。
He has gone to Beijing.Jim has been living in this city for two months。
Lucy has been living in Beijing since three years ago。
He has been in China since he arrived here。
If there is no time adverb in the sentence。
the present perfect tense is often used to convey the meaning of "already" in Chinese。
For example。
"Have you lost your library book?" can be translated as "你已经弄丢了从图书馆借的那本书吗?"The present perfect tense is also commonly used in the following sentence patterns: "They have planted many trees in the last few years," "This is the best book I have ever read," and "It is the first time I have played computer games."In the present perfect tense。
现在完成时(Present perfect)一、现在完成时定义1.过去发生并且已经完成的动作对现在造成影响或后果。
2.过去某一时间开始并一直持续到现在并且有可能还会持续的动作或状态。
二、现在完成时的结构have/has done动词的过去分词变化规则1.+ed work,plant,call2.e+d live,change,like,love,agree,save,hate,move,arrive,,skate, hope,use3.以重读闭音节结尾,末尾只有一个辅音字母的双写+ed.如:plan,stop, drop,fit(适合),prefer(更喜欢),travel4.以辅音字母+y,结尾,变y为i+edtry,study,carry,hurry,cry,worry,copy5.不规则变化三、现在完成时的标志词标志词:already yet never ever just before recently once/twice 数字+times so far by now up to nowuntil now these days in/over/during the last/past+时间段for+一段时间since+过去的某一个时间点标志词讲解already: 往往用于肯定句,放在句中或句末,在句中时位于助动词或系动词后,实义动词前。
He has already left here.yet用于否定句和疑问句,一般在句末。
My teachers haven’t had breakfast yet. Have you written to your parents yet? ever用于肯定句和疑问句中,在句中位于助动词和系动词后,实义动词前。
Have you ever visited the museum?never用于句中,助动词或系动词后,实义动词前,表示否定意义。
We have never met again since that day.just 用于句中,表示“刚刚”,与already,never等副词位置一样。
现在完成时例句大全现在完成时是英语中常用的一种时态,用来表示过去发生的动作对现在的影响或结果。
在现在完成时中,动词的形式是"have/has + 过去分词"。
下面是一些关于现在完成时的例句,帮助你更好地理解和运用这个时态。
1. I have finished my homework.我已经完成了我的作业。
2. She has visited Paris twice.她已经两次去过巴黎。
3. We have seen that movie before.我们以前看过那部电影。
4. Have you ever been to New York?你去过纽约吗?5. They have lived in this city for five years.他们在这个城市住了五年了。
6. He has already eaten breakfast.他已经吃过早饭了。
7. Have you ever tried sushi?你吃过寿司吗?8. The train has just arrived.火车刚刚到达。
9. She has never traveled abroad.她从未出过国。
10. They have known each other for a long time.他们互相认识已经很长时间了。
11. He has lost his keys.他丢了他的钥匙。
12. I have studied English for ten years.我学习英语已经十年了。
13. Have you ever seen a shooting star?你看过流星吗?14. She has already finished her work.她已经完成了她的工作。
15. They have never been to Asia.他们从未去过亚洲。
16. We have just arrived at the airport.我们刚到达机场。
BE动词的完成时BE动词的完成时是英语中的一种时态形式,用于表示过去发生的动作或状态与现在的关联。
本文将对BE动词的完成时进行详细介绍。
一、什么是BE动词的完成时是由助动词"have"加上主要动词的过去分词构成的。
它用来表达已经发生或完成的动作或状态,并与现在有关。
在BE动词的完成时中,助动词"have"的形式会发生变化,根据句子的主语和时态形式不同,BE动词的完成时会有多种形式。
二、BE动词的完成时的构成1. 肯定句形式BE动词的完成时的肯定句形式由助动词"have"的不同形式加上主要动词的过去分词构成。
例如:- I have completed my homework.(我已经完成了作业。
)- They have gone to the park.(他们已经去公园了。
)2. 否定句形式BE动词的完成时的否定句形式在助动词"have"之后加上"not"构成。
例如:- She has not arrived yet.(她还没有到达。
)- We have not seen the movie.(我们还没有看过这部电影。
)3. 疑问句形式BE动词的完成时的疑问句形式将助动词"have"置于主语之前。
例如:- Have you finished your work?(你完成你的工作了吗?)- Has he ever been to Paris?(他曾经去过巴黎吗?)三、BE动词的完成时的用法1. 表示过去发生的动作对现在产生的影响。
例如,使用BE动词的完成时可以表示已经完成的动作对现在的状态或情况造成的影响。
例如:- She has studied English for five years.(她已经学了五年英语了。
)这句话表示过去五年以来她一直学英语,现在她的英语水平相对较高。
2. 强调已经发生的动作或状态。
完成时现在完成时(一):开始于过去的动作一直持续到现在,有可能继续持续。
谓语动词为延续性动词 I have lived here for 3 years. 我仍然住在这里,而且还可能继续住下去。
如果在搬家时说这句话,则live这件事只持续到目前为止。
The teacher has taught in this school since I came here.I’ve worked in this company since I left school.since表明了动作开始的时间点。
有上下问明确告知,动作只持续到说话的时刻为止。
a. A: Have you waited long?B: I’ve waited for three hours.b. I’ve waited for him all day; I don’t want to wait any longer.特点:1. 谓语动词为延续性动词2. 动作的发生时间是过去,持续到现在,还可能继续持续下去。
3. 常常与表示一段时间的时间状语连用,是说明某个状态持续了多久。
与现在完成时搭配的时间状语1. since + 时间点a. I’ve worked in thiss company since 1980b. I’ve worked in this company since I left school. (从句中一般过去时)2. for + 时间段a. I’ve worked in this company for three years.b. Great changes have taken place in Beijing for the past few years.3. 到目前为止:until now, up until now, up to now, up till now, so far.a. We have up until now failed to take any action to decide on a common language that would further communication between nations.4. 在最近几世纪/年/月以来:in the past few years, over the past few years, during the last three months, for the last few centuries, through centuries, throughout history.a. Throughout history man has had to accept the fact that all living things must die, for the very nature of life includes death.b. Through centuries the bizarre anticss of sleepwalkers have puzzled police, perplexed scientists anad fascinated writers.现在完成时(二):过去发生但与现在仍有联系的动作或状态a. He has broken his leg. 他现在还在医院,所以不能和同学一起郊游。
现在完成时的两种用法现在完成时表示过去发生或已经完成的动作对现在的影响或结果。
一、现在完成时表示影响这种完成时一般表示:过去发生的动作在过去已经完成;过去发生并完成的动作对现在有影响或结果;说话者强调的或感兴趣的就是这个影响或结果。
例句:Someone has broken the window. (结果:窗户仍破着。
)二、现在完成时表示持续这种完成时一般表示:过去发生的动作或开始的状语在过去并未完成或结束;到现在依旧持续;未来可能继续或到此结束)。
例句:He has worked for us ever since he left school.三、现在完成时表示重复这种完成时一般表示:过去到现在不断重复发生的动作或情况;可能继续;可能到此结束。
例句:My father has always gone to work by bike.四、现在完成时表示将来可以在时间状语从句里表示将来。
例句:When you have rested, I’ll show you the garden.五、现在完成时的用法考点考点一:现在完成时是由“助动词(have/has)+动词过去分词”构成。
当主语是第三人称单数的时候,助动词要用has,其余都用have。
考点二:现在完成时虽然与过去有关,但实际上强调的是对现在的影响或结果。
现在完成时也可以表示动作开始于过去的某一时刻,一直延续到现在或可能还要继续下去,经常与“for+一段时间”,“in the last/past+一段时间” 或者是“since+时间点/谓语动词为一般过去时的句子” 等表示一段时间的状语连用。
考点三:与现在完成时连用的副词常见的有already, just, yet, ever, never, before等。
现在完成时用法大全1.现在完成时是一个表示过去发生的动作对现在造成影响和结果的时态。
常用时间状语包括many times,just,yet,ever,never,already,so far,by now等。
此外,它还可以表示动作或状态在过去已经开始,持续到现在并可能继续下去,常与so far、for或者since短语连用。
例如,since + 时间点/从句,for + 时间段,如for two months等。
2.现在完成时的构成是have/has + 过去分词。
3.现在完成时有四个基本句型:肯定句,一般疑问句,否定句和特殊疑问句。
肯定句形式为主语 + have/has + 过去分词,例如He has finished the work。
一般疑问句形式为Have/Has +主语 + 过去分词 + 其他?例如Has he finished the work。
否定句形式为主语 + have/has + not + 过去分词,例如He has not finished the work。
特殊疑问句形式为疑问词 + have/has + 主语+ 过去分词,例如What has he done?4.现在完成时在以下情形下使用:①已经肯定句中或句尾使用already,例如I have already found my pen。
②已经否定句和疑问句句尾使用yet,例如I have not finished the work yet。
Have you bought a computer yet。
③曾经句中使用ever,例如Have you ever seen pandas。
④从不句中使用never,例如I have never been to Beijing。
⑤刚刚句中使用just,例如I have just done my work。
⑥以前句尾使用before,例如I have never been there before。
英语时态:现在完成时现在完成时(The Present Perfect Tense)表示过去发生的某一动作对现在造成的影响或结果,可能持续发生下去。
常与一些时间状语,如:already, yet, ever, never, just, before, once, twice(次数)等连用,也可以和包括现在在内的时间状语,如these days, today, recently, this year, so far(=by now)等连用.Ⅰ. 句法结构:1.陈述句:助动词have + done(过去分词)A. 肯定形式:主语+have/has +done+其他B. 否定形式:主语+have/has not+done+其他注:助动词have和has不构成实际含义,仅配合主语进行人称和数的变化;而行为(实义)动词统一以done形式存在在结构中,没有进行人称和数变化。
2.疑问句:A. 一般疑问句:助动词提前即可Have/Has+主语+done+其他B.特殊疑问句:特殊疑问词+一般疑问句(同上)3.被动语态:主语+ have/has + been +done +其他【被动结构be done,时体现在助动词】➢两态变化例句参考下表:Ⅰ. 主要用法:1.表示到说话人说话时已经完成的动作,却对现在仍有影响或结果。
He has lost his book.2.表示事情开始与过去,却一直持续到现在还在进行的事情。
He has taught in our school for 30 years.3.表示从过去某个时间直到现在的这个时间范围内不断重复发生的动作或情况,并且这个不断重复的动作有可能继续下去,也有可能到现在就结束。
My father has always gone to work by bike.4.同一般现在时可以表示将来一样,现在完成时也可以在时间状语从句里表示将来。
I’ll wait until he has written his letter.Ⅰ. 常用于现在完成时的时间状语:for, since, already, yet, ever, never, recently, just, before, so far, by now等1.for+段时间;since+(过去的某一个)点时间I have lived in Nanning for ten years.I have lived in Nanning since ten years ago.2.already用于肯定句, 可放在助动词之后、过去分词之前,也可放在句末。
三.完成时态1.现在完成时的基本概念和形式现在完成时(Present perfect tense)表示动作发生在过去,但与现在情况有关系,即用一个发生在过去的动作来说明现在的情况。
现在完成时由动词have (has) + 过去分词构成。
1.1 现在完成时的基本用法1)表示动作到现在为止已经完成或刚完成,汉语常用"了"或"过"来表示。
如:I have finished my work.我把工作做完了。
We have set up many new factories in this area.我们在这个地区建立了许多新工厂。
She has read all these books.她把这些书都读完了。
2)动作在过去完成,表示"经验"或"结果"。
汉语常用"过"来表示。
如:Have you ever seen the play The Doll's House? 你看过话剧《傀儡家庭》吗? Yes,I have seen it twice.我看过两遍了。
I have learnt to drive.我学过开车。
The man has lived in China.那人在中国住过。
[注] 注意be在下面句子中的意义。
如:Where have you been? -I've been to the laboratory.你上哪儿去了?--到实验室去了。
Have you ever been to Hangzhou? ―No,I've never been there.你到过杭州吗?--没到过。
How have you been?-I've been well thank you.你近来身体好吗?--谢谢你,我近来很好。
1.2 现在完成时与过去一般时的区别现在完成时和过去一般时都表示在过去完成的动作,但现在完成时强调这一动作与现在的关系,如对现在产生的结果、影响等,而过去一般时则表示动作发生在过去,一般不表示和现在的关系。
过去完成时1)概念:表示过去的过去----|-------|-----|---->其构成是had +过去分词构成。
那时以前那时现在2)用法a.在told, said, knew, heard, thought等动词后的宾语从句。
She said (that) she had never been to Paris.b. 状语从句在过去不同时间发生的两个动作中,发生在先,用过去完成时;发生在后,用一般过去时。
When the police arrived, the thieves had run away.c. 表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示原本…,未能…We had hoped that you would come, but you didn't.3)过去完成时的时间状语before, by, until , when, after, once, as soon as。
He said that he had learned some English before.By the time he was twelve, Edison had began to make a living by himself.Tom was disappointed that most of the guests had left when he arrived at the party.典型例题The students ___ busily when Miss Brown went to get a book she ___ in the office.A. had written, left B,were writing, has left C. had written, had left D. were writing, had left答案D. 把书忘在办公室发生在去取书这一过去的动作之前,因此忘了书这一动作发生在过去的过去,用过去完成时。
句中when表示的是时间的一点,表示在同学们正忙于……这一背景下,when所引导的动作发生。
因此前一句应用过去进行时。
注意:had no … when还没等…… 就……had no sooner… than刚…… 就……He had no sooner bought the car than he sold it.1. 单项选择1.He asked me _____ during the summer holidays.A. where I had beenB. where I had goneC. where had I beenD. where had I gone2. What ____ Jane ____ by the time he was sever?A. did, doB. has, done C did,did. D. had, done3. I ______ 900 English words by the time I was ten。
A. learnedB. was learningC. had learnedD. learnt4. She ______lived here for ______ years.A. had, a fewB. has, severalC. had, a lot ofD. has, a great deal of5. By the time my parents reached home yesterday, I _____ the dinner already.A had cooked B. cooked C. have cooked D. was cooked6. She said she __________ the principle alreadyA .has seen B. saw C. willsee D. had seen7. She said her family _______ themselves ______ the army during the war.A. has hidden, fromB. had hidden, fromC. has hidden, withD. had hidden, with8. By the time he was ten years old, he _________.A. has completed universityB. has completed the universityB. had completed an university D. had completed university9. She had written a number of books ______ the end of last year.A. forB. inC.by D. at10. He _____ to play ____ before he was 11 years old.A had learned, piano B. had learned, the pianoC. has learned, the pianoD. learns ,piano.11. What _______ Annie ____ by the time he was ten?A. did, doB. did, didC. has, doneD. had done12 .He ___ in the factory for three years before he joined the Army.A. has workedB. worksC. had workedD. will work13. By the end of last week, they ____ the bridge.A. has completedB. completedC. will completeD. had completed14. Ben hates playing _____ violin, but he likes playing ____ football.A. a…theB. the… theC. / …theD. the…/15. By the time he was 4, he ______ a lot of German words.A. had learnedB. has learnedC. learnedD. learns16 .Jim turned off the lights and then _____ the classroom.A. was leftB. had leftC. has leftD. left17.They _________ in Guangzhou since 2000.A. livedB. had livedC. have livedD. were living18. The train from Beijing_______ ten minutes ago.A. has arrivedB. was arrivingC. arrivedD. had arrived19. The students _________ their classroom when the visitors arrived.A . have cleaned B. had cleaned C. was cleaned D. have been cleaned20. Fergie_______ the project in one hour.A. have finishedB. will finishC. finishesD. has finished21. The man ________ his coat and went out.A. put onB. had put onC. will put onD. was putting on22 My mother______ in that factory at the age of 18.A. had workedB. has workedC. workedD. works23. Dad ________ while he _______ TV.A .fell asleep…watch B. was falling asleep…watchedC. fell asleep……was watchingD. had fallen asleep…watched2.用动词的适当形式填空1. We _____________ (paint) the house before we ______________ (move) in.2. That rich old man _____________ (make) a will before he _____________ (die).3. They _____________ (study) the map of the country before they ________ (leave).4. The robbers _____________ (run away ) before the policemen _______ (arrive).5. I __________ (turn off) all the lights before I ____________ (go) to bed.6. Paul __________ (go) out with Jane after he __________ (make) a phone call.7. Tom __________ (say) he ___________ (read) the book twice.8. Our plan ____________ (fail ) because we _____________ (make) a bad mistake.9. When the chairman ______________ (finish) speaking, he _____________ (leave)the hall.10.The Reads __ ______ (have) lunch when I ________________(get) to their house.11.When I ______________(arrive) at the station, he ____________________(leave).12..We _______________(learn) about 4000 English words by the end of last term.13. I waited until he _______________(finish) his homework.14. We were surprised at what she ________already ______(do)15.She ____________(not go) to Qingdao because she ________________ (go) there before.16. He ______________(not tell) you the news yet.17. He said he _____________already_________(give) the book to the teacher.18. I ______________(be) to Shanghai before.19. She told me she _________________(be) to Sanya three times.20.She _____________(play) the guitar while her sister_______________(sing).(2)现在完成时可以和带有since或for等表示“一段时间”的状语连用,表示动作或状态从某一时刻开始,一直持续到现在。