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现在完成时的形式是什么 现在完成时的结构

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目录

现在完成时的形式是什么 现在完成时的结构

完成时分为哪几种?分别怎么用?句型是什么?

完成时分为:现在完成时 、过去完成时、现在完成进行时

现在完成时:

1.表示过去发生的动作对现在造成的影响或结果

2.表示过去的动作或状态持续到现在

3.构成 主语+have/has +动词的过去分词。

过去完成时:

表示过去某一时间或动作以前已经发生或完成了的动作对过去的某一点造成的某种影响或是结果,用来指在另一个过去行动之前就已经完成了的事件。它表示动作发生的时间是“过去的过去”,侧重事情的结果。

主语+had+动词过去分词(done)

①肯定句:主语+had+动词过去分词+其他.

②否定句:主语+had+not+动词过去分词+其他.

③一般疑问句:Had+主语+动词过去分词+其他+?

肯定回答:Yes,主语+had.

否定回答:No,主语+had not

④特殊疑问句:特殊疑问词或词组+一般疑问句(had+主语+过去分词+其他)

⑤被动语态:主语+had(not) +been+动词过去分词+其他

现在完成进行时:

英语中,动词的一种基本时态,其构成为:主语+助动词(have/has)+been+动词的现在分词+其他成分。表示动作从某一时间开始,一直持续到现在,或者刚刚终止,或者可能仍然要继续下去。(与since,for连用时,常常表示动作会进行下去)也可以表示某种经历。但注意,现在完成进行时所应用的语境必须是现在(now等状语的提示或者根据上下文、语境)的,不能应用在过去的语境(如出现明确表示是在过去某一个时刻的状语)。

请问现在完成时的定义是什么?

1.现在完成时表示到现在为止已完成或仍在持续的动作、状态;强调对现在的影响、联系,或表示经历、经验即用过去发生的动作来说明现在的情况。

2.现在完成时的形式是have(has)+过去分词。

3.现在完成时是用过去发生,到现在已完成或刚完成的动作来说明现在的情况,或说明到目前为止所完成的动作。

I have opened the door.

我已打开门了。

表示门现在是开着的。

He has come back from town.

他已经从城里回来了。

表示人现在此处。

4.现在完成时用在过去已完成而其结果对现在仍有影响的动作来说明经历、经验,或表示某种感情色彩。

Mr. Lee speaks good English. He has learned English for ten years.

李先生说一口好英语,他学了十年英语了。

表示经历、经验。

What have you done!

你做的什么事啊!

表示对所做的事表示不满。

5.在表示时间或条件的状语从句中用现在完成时表示未来完成的动作。

You may go swimming if you have done your homework before nine o'clock.

如果你在九点以前做完功课,你可以去游泳。

6.当现在完成时表示从过去某时持续到现在的动作或状态,以说明经历、经验,与for或since引导的表示一段时间的副词短语连用时,谓语动词要用be, keep, learn, live, read, serve, stay, study, teach, watch, work, write等表示持续的动词,不可使用arrive, become, begin, borrow, buy, come, close, die, end, enter, get, go, hear, graduate, join, leave, lend, lose, marry, open, put, reach, receive, return, see, shut, start, stop等表示终止的动词。

中文:他到这里三天了。

(误)He has arrived here for three days.

(正)He has been here for three days.

7.终止动词的否定式可与for或since引导的表示一段时间的副词短语或状语从句连用。

I haven't seen her for five years.

我五年没见到她了。

8.与ever, never,just, always等表示不确定的时间副词连用时,可用现在完成时也可用一般过去时。

中文:你听说过这样一个人吗?

Have you ever heard of such a man?

本句为现在完成时。

Did you ever hear of such a man?

本句为一般过去时。

9.have(has) been to与have(has) gone to的比较。

Have you been to Hong Kong?

你去过香港吗?

现在已不在香港。

He has gone to Hong Kong.

他已去香港了。

他现在已不在本地。

现在完成时是什么?请写出其形式和举例子

现在完成时的用法

have(has)+过去分词

1.现在完成时用来表示现在之前已发生活或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在.

I have lost my wallet.(含义是:现在我没有钱花了.)

Jane has laid the table.(含义是:已可以吃饭了.)

Michael has been ill.(含义是:现在仍然很虚弱)

He has returned from abroad. (含义是:现在已在此地)

2. 现在完成时可以用来表示发生在过去某一时刻的,持续到现在的情况,常与for,since连用.

Mary has been ill for three days.

I have lived here since 1998.

3. 现在完成时往往同表示不确定的过去时间状语连用,如already, yet, just, before, recently, lately等:

He has already obtained a scholarship.

I haven't seen much of him recently (lately).

We have seen that film before.

Have they found the missing child yet

4. 现在完成时常常与表示频度的时间状语连用,如often, sometimes, ever, never, twice, on several occasion等:

Have you ever been to Beijing

I have never heard Bunny say anything against her.

I have used this pen only three times. It is still good.

George has met that gentleman on several occasions.

5. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如now, up to these few days/weeks/months/years, this morning/week/month/year, now, just, today, up to present, so far等:

Peter has written six papers so far.

Man has now learned to release energy from the nucleus of the atom.

There has bee too much rain in San Francisco this year.

The friendly relations and cooperation between our two countries have been enhanced in the past few years.

Up to the present everything has been successful.

什么是现在完成时?

1。现在完成时用来表示之前已发生或完成的动作或状 态,其结果的确和现在有联系。动作或状态发生在过去 但它的影响现在还存在;也可表示持续到现在的动作或 状态。其构成: have (has) +过去分词。 2。将来完成时 1) 构成will / be going to do sth. 2) 概念 a. 状态完成:表示某事继续到将来某一时为止一直有的状态。 b. 动作完成:表示将来某一时或另一个将来的动作之前,已经完成的动作或一获得的经验。 They will have been married for 20 years by then. You will have reached Shanghai by this time tomorrow. 3。过去进行时的基本用法 a.过去进行时表示过去某一时间正在进行的动作,常和表过去的时间状语连用,如: I was doing my homework at this time yesterday.昨天的这个时候我正在做作业。 They were expecting you yesterday.他们昨天一直在等待。 b.过去进行时可与soon, the next moment, in minutes, minutes later等时间状语连用,表示一个新的 动作刚刚开始。如: Soon the whole town was talking about it.不久镇上的人就都谈论起这种事了。 c.过去进行时可用来申述原因或用作借口,这种用法常用在口语中。如: -- Have you finished your homework, Mary?玛丽,你作业做完了吗? -- No, I was helping my mother is the kitchen all day yesterday.还没呢,我昨天一天都帮妈妈在厨 房干活。 d.过去进行时可用来为一个后一系列动作的发生提供背景。如: I hurt my leg when I was riding a bike.我在骑车时把腿摔坏了。 e.过去进行时可表示过去未曾实现的愿望或打算,这时be动词was/were要重读。如: I was writing him a letter this morning and forgot all about it .我本该今天早上给他写信的 ,后来全给忘了。 I was seeing her tomorrow. 我本来打算明天会见她。 He was watching the play yesterday, but he was too busy. 他昨天本来要看那场戏的,可是太忙 了。 过去进行时表示过去某一段时间或某一时刻正在进行的动作。常与之连用的时间状语有,at that time/moment, (at) this time yesterday (last night/Sunday/week…), at+点钟+yesterday (last night / Sunday…),when sb. did sth等时间状语从句。 What were you doing at seven p.m. yesterday?昨天晚上七点你在干什么? I first met Mary three years ago. She was working at a radio shop at the time.我第一次遇到玛丽 是在三年前,当时她在一家无线电商店工作。 I was cooking when she knocked at the door.她敲门时我正在做饭。 (3)一般过去时往往表示某一动作已经完成,而过去进行时却表示动作在持续或未完成。如: I saw you while you were speaking to the teacher.你在和老师谈话时我看见了你。 注意:有的过去时间状语既可用于一般过去时,也可用于过去进行时,但含义不同。如: She wrote a letter to her friend last night.她昨晚给她的朋友写了封信。(信写完了) She was writing a letter to her friend last night.她昨晚一直在给她的朋友写信。(信不一定写完) 一、过去进行时的时间状语 1.when 和while引导的状语从句中,强调某个动作正在进行的过程中时要用进行时态,while表示一段时 间,因此它所引导的状语从句中,谓语动词常用进行时态,如: When/While we were having supper, the light went out.我们正在吃饭时灯熄灭了。 2.when用作并列连词时,主句常用进行时态,从句则用一般过去时,表示主句动作发生的过程中,另一个意 想不到的动作发生了。如: I was walking in the street when someone called me.我正在街上走时突然有人喊我。 二、下面几种情况不用一般过去时而要用过去进行时: 1. 表示过去某一阶段暂时性的习惯动作时。如: Tom was getting up at six o’clock every day that week.汤姆那一周里每天都是六点钟起床。 2. 与always连用表示赞美,厌烦等感情色彩时。如: John was always coming to school late.约翰上学总是迟到。 Lei Feng was always doing good deeds for the people.雷锋总是为人民做好事。 3. 用来描写故事发生的情景时。如: It was a dark night. The wind was blowing hard and the rain was falling heavily. A PLA man suddenly appeared on the river bank. He wanted to cross the river.那是一个漆黑的夜晚,风刮得很 厉害,雨下得很大,一个解放军战士突然出现在河岸上,他想过河去。 4. when作并列连词,表示“(这时)突然”之意时,第一个并列分句用过去进行时,when引导的并列分句 用一般过去时。如: I was taking a walk when I met him.我正在散步,突然遇见了他。 We were playing outside when it began to rain.我们正在外边玩,这时下起雨来了。 5go, come, leave, start, arrive等动词可用过去进行时表示过去将来的含义。如: I was leaving for Wuhan that day.那天我正要去武汉。 She was coming later.她随后就来。 三、过去进行时表示婉转语气(只限于want, hope, wonder 等动词),用以提出请求。如: I was wondering if you could help me. I was hoping you could send me home. 4。现在完成进行时 1. 形式:have(has)+been+现在分词,以work为例: 肯定式: IYouWehave HeSheIthasbeen working. 否定式: IYouWehave HeSheIthasnot been working. 疑问式: haveIYouWe HasHeSheItbeen working? 2. 用法 现在完成进行时表示从过去某一时间开始一直延续到现在的动作。现在这个动作可能刚刚终 止,也可能仍在进行。 I have been sitting here all afternoon. 我在这儿坐了一下午了。 How long has it been raining? 雨下了多久了? They have been fighting for independence since 1960s. 他们从60年代以来一直为独立而斗争。 3?现在完成进行时和现在完成时的区别 1)现在完成进行时一般强调过去发生的动作现在仍在继续。 现在完成时强调过去发生的动作现在已经完成或表示曾经发生过。 I have been writing an article. 我一直在写一篇文章。(仍在) I have written an article. 这已写好一篇文章。(已完成) I have been reading that book since last week. 上周以来,我一直在读那本书。(还在读) I have read that book before. 以前我曾读过那本书。(动作在过去曾经发生过) 2) 现在完成进行时表示刚刚结束的动作,强调动作在不久前持续进行,带有感 情色彩。 现在完成时表示已经结束的动作,强调动作的结果。 Where have you been? We have been looking for you everywhere. 你到哪里去了?我们到处在找你。(表示刚刚结束的动作) We have looked for him, but haven't found him. 我们找过他,但没有找到他。(表示动作已结束,强调支作的结果) 3) 现在完成进行时表示现在以前的这段时间内反复发生的事情。 All these years they have been contributing articles to our magazine. 这些年来,创立们一直为我们杂志写稿。 We have been seeing quite alot of each other recently. 最近我们常常见面。

现在完成时

一。意义:表示动作发生在过去,截止到现在

二。构成:has/have+done

三。标志:since+过去的一个时间点

for+时间段

看着两个例句:

I have lived in beijing for ten years.

I have lived in beijing since ten years ago.

TAG: 形式