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英语语法

英语语法——语气概述

来源:普特英语

一、语气及其种类

1)语气(mood)语气是一种动词形式,表示讲话人对某一行为或事情的看法和态度。

2)语气的种类语气可分为下列三种:

a)直陈语气(indicative mood)表示讲话人认为他所说的话是一个事实。如:

There are two sides to every question.每个问题都有两个方面。

Jinzhou is famous for its apples.锦州以产苹果闻名。

Comrade Zhang Side had a deep love for the Party.张思德同志对党怀有深厚的爱。

b)祈使语气(imperative mood)表示讲话人对对方的请求或命令。如:

Bring along your exercise books tomorrow.明天把练习本带来。

Make yourself at home.请随便,不要客气。

Don't move! 不许动!

Don't be late.不要迟到。

Be quiet! 请安静!

c) 虚拟语气(subjunctive mood)。

二、虚拟语气一

虚拟语气是一种特殊的动词形式,用来表示说话人所说的话不是一个事实,而只是一种愿望、假设、怀疑、建议、猜测、可能或纯粹的空想等。如:

If I were not so busy,I would go with you.假如我不太忙,我会和你一起去。(表示假设)

I wish Lao Li were here.H6 would know how to fix the machine.老李在这儿就好了,他会知道怎样把机器修好的。(表示愿望)

He suggests that we should all go to see the film.他建议我们都去看电影。(表示建议)

1.虚拟语气的动词形式

比较特殊,共有下列七种:

1)动词原形(用于一切人称和数)

2)动词的过去式(用于一切人称和数,be的过去式用were)

3) had + 过去分词(用于一切人称和数)

4) should + 动词原形(用于一切人称和数)

5) should have + 过去分词(用于一切人称和数)

6) should (第一人称),Would(第二、三人称) + 动词原形

7) should(第一人称),Would(第二、三人称) + have + 过去分词

[注]上述某些动词形式和直陈语气的某些动词形式相同,但它们的用法及其所表示的时间概念则完全两样,二者切不可混淆。

虚拟语气常用在表示条件的从句和表示结果的主句中。

2.虚拟语气在条件从句和结果主句中的用法

1)表示与现在事实相反的条件和结果,:如:

If I Were you,I should go and see the dentist at once. 假如我是你的话,我会马上去看牙科医生。

If they were no gravity, we should not be able to walk. 假如没有引力,我们就不能行走。

If they had time,they would study Italian too. 假如他们有时间的话,他们也会学意大利语的。If She knew German,She would read Marx and Engels in the original假如她懂德语,她就会读马克思和恩格斯的原著了。

He would tell me if he knew,but he does not,know anything about it. 假如他知道的话,他会告诉我的,但是他一点也不知道。

2)表示与过去事实相反的条件和结果。如:

If I had known of your arrival I should have met you at the station.如果我早知道你要来,我会去车站接你的。

If you had come a few minutes earlier,you would have met him.要是你早来几分钟的话,你就见到他了。

If She hadn't been so strict with herself, she wouldn't have made such great progress.她要是对自己要求不严格,她就不会有这样大的进步。

If the child had fallen through the ice, he would have drowned. 假如这孩子掉到冰窑里,他定会淹死了。

3)表示与将来事实可能相反的条件和结果。其用法和表示与现在事实相反的条件和结果相同。如:

If it Were Sunday tomorrow,my brother would go skating at the Beihai Park.如果明天是星期天,我弟弟会去北海公园滑冰的。

If you dropped the glass,it would break.你如将杯子掉下来,它就会打碎的。

What Would happen if I put the paper on the fire? -It Would bum.我若把纸放在火上会怎么样?--纸就会烧着。

[注]在表示与将来事实可能相反的条件从句中,亦可用were to + 动词原形(比较正式,常用于书面体中)和should + 动词原形。如:

If you were to come tomorrow,I might have time to see you.你如果明天来的话,我或许会有时间见你。

If I were to see her tomorrow,I would tell her about your decisions. 我明天如见到她,就把你的决定告诉她。

If it should rain tomorrow,what would we do?明天万一下雨,我们怎么办?

If you should meet George,tell him I want to see him.你如见到乔治,告诉他我要见他。

三、虚拟语气二

不用if的条件从句结构

在笔语中,条件从句有时可以不用连词小而把were,had或should移至主语之前。但如从句没有were,had或should,则一般不能这样做。如:

Should he come,tell him to ring me up.他要是来了,让他给我打个电话。

Were I in your position,I would go.如果我处于你的地位,我就去。

Had they not helped us,our experiment would have failed. 如果没有他们的帮助,我们的试验是会失败的。

[注]有时虚拟条件不用条件从句而用介词短语、动词不定式等来表示。如:

without contradiction nothing would exist. 没有矛盾就没有世界。

We could not have done the work well without your help.要是没有你的帮助,我们不可能做好这工作。

It wonld be a good idea to go swimming at the summer palace.到颐和园去游泳,倒是个好主意。All this would have been impossible ten years ago.这一切在十年前是不可能有的。

四、虚拟语气三

虚拟语气和情态动词

虚拟结构(不论从句或主句)常可用情态动词的过去式,即could,might,wou1d等加不带to 的动词不定式或不带to的动词不定式完成式,来作谓语动词。这些情态动词除表示虚拟结构外,本身还有独立的意思。如:

If I were you,I Would go.我如果是你,我就愿意去。

If he were here,he might agree with you.假如他在这里,他可能会同意你。

I Would help you if I could. 假如我能够的话,我一定帮助你。

If it had not been for their help,we could not have succeeded. 如果没有他们的帮助,我们是不可能成功的。

五、虚拟语气四

有时条件从句中的动作和结果主句中的动作所发生的时间不一致

这时,动词的形式应根据它所表示的时间加以调整。如:

If he had followed the doctor's advice,he Would be quite all right now.他当时若是听医生的话,现在就会痊愈了。(从句说明过去,主句说明现在)

If I were you,I Would have gone to the theatre.假如我是你,我会去看话剧了。(从句的时间包括现在,主句说明过去)

If you hadn't helped me,I couldn't have finished it on time and most likely I would be still working now.假若你没有帮助我,我不可能按时完成工作,很可能现在还在干哩。(从句说明过去,主句说明过去和现在)

用直陈语气表示条件和结果

在现代英语里,多用直陈语气表示条件和结果。直陈语气的条件和结果所表示的往往是事实。如不是事实,其可能性也较虚拟语气要大。如:

If it rains tomorrow,we shall not go out.假如明天下雨的话,我们就不出去。

The dog won't attack you if you sit still.如果你安静地坐着,狗是不会咬你的。

If the train leaves at eight thirty,there is no time to lose. 火车如果是八点半开,我们得抓紧时间了。

If the rain stops,I'll go for a swim.要是雨停了,我就去游泳。

六、虚拟语气五

省去从句或主句的虚拟结构

虚拟结构中的从句或主句有时形式上可以省略,但意义上却仍存在。

1)省去了条件从句的虚拟结构。如:

That would be fine.那就太好了。(省去了if you should do it或类似条件)

You might stay here forever.你可以永远呆在这里。(省去了if you wanted协或类似条件)

I would not have done it.我是不会做那件事的。(省去了if were you或类似条件)

[注]虚拟结构中省去的从句有时并不容易找出。如:

Who would have thought of it ? 谁会想到是这样的呢?

2)省去了结果主句的虚拟结构(常用以表示愿望)。如:

If he were here!假如他在这里该多好啊!

If I had never married.如果我从未结婚就好了。

这种结构也常用if only开头。如:

If only I could help you! 假如我能帮助你,那该是多好啊!

If only I were ten years younger!我要是能年轻十岁该多好啊!

If you would only try harder!你如再努力一试就好了。(only亦可置于would等助动词之后) [注]有时if only只表条件,不表愿望。如:

If only I had known earlier,I'd have sent you a telegram.我只要知道得早一点,就会拍电报给

你了。

七. 虚拟语气的其他用法六

虚拟语气用在主语从句中

在It is natural(necessary,strange,important) that...这类句型里,that所引导的主语从句中的谓语动词常用should加动词原形。如:

It is quite natural that he should think so.他这样想是很自然的事。

It is strange that he Should have gone away without telling us. 真奇怪,他没有通知我们就走掉了。

It is necessary that the question should be settled at once.必须马上解决这个问题。

It is important that we should speak politely. 我们说话要有礼貌,这是很重要的。

It is imperative that we should practise criticism and self-criti - cism. 应当进行批评与自我批评。虚拟语气用在宾语从句中

下列两种宾语从句须用虚拟语气:

1)在动词wish后的宾语从句(常常省去连词that),表示不可实现的愿望。从句中的动词如用过去式,则表示与现在事实相反(如下面第一、二例句);如用过去完成式,则表示与过去事实相反(如下面第三、四例句)。如:

I wish I were a pilot.但愿我是个飞行员。

I wish I knew how to operate the machine.我要是会操作这架机器该有多好啊! (= I'm sorry I don't know.)

I wish he hadn't gone.他要是没走该多好!(= I'm sorry he has gone.)

We wish you had come to our New Year's party.我们真希望你来参加我们的新年联欢会。(= but you did not)

动词wish如果是过去式,后面宾语从句的动词的虚拟语气形式不变,仍用过去式或过去完成式。如:

She wished she knew how to play golf. 她但愿会打高尔夫球。(和过去事实相反)

I wished I hadn't been so forgetful. Then I shouldn't have missed the concert.我要是不这样忘事该多好,那我就不会不去听音乐会。(和过去的过去的事实相反)

[注]有时在宾语从句中可用would或might加动词原形,表示有可能实现的愿望。如:.

I wish he,might stay with me.我希望他和我住在一起。

He wishes I would go with him.他希望我和他一起去。

I wish you would be quiet.我希望你安静一些。

2)动词demand(要求),suggest(建议),order (命令),insist(坚持),propose(建议)等后面的宾语从句,用should(用于所有的人称)加动词原形来表示虚拟语气。如:

I suggest that we should hold a meeting tonight.我建议今晚开个会。

The chairman proposed that we Should discuss the question.主席提议我们讨论这个问题。

Most students insist that they should have more English classes. 多数同学坚持要多上英语课。[注]这种结构往往可不用should,尤其在美国,只用动词原形(用于所有的人称)。如上面三例只用hold,discuss和have,不用should hold,should discuss和should have。又如:

I suggest that we make a new expertinent.我建议进行新的试验。

I propose that the matter be put the vote at once.我提议把这个问题马上付表决。

虚拟语气用在状语从句中

由as if或as though所引导的状浯从句表示比较或方式时,从句中的谓语动词常用虚拟语气。动词形式用动词的过去式(be用were)或had + 过去分词。如:

My mother locked after the orphan as if he were her own child. 我母亲照料这个孤儿像自己孩子一样。

You speak as if you had really been there.你谈得好像你真的到过那里似的。

注意下面句中的as if从句用作表语。如:

It looks as if it might rain,天好像要下雨似的。

[注]连词lest和in case所引导的状语从句中的谓语动词亦用虚拟语气。例见15.33和15.30 虚拟语气用在定语从句中

It is time (that)…句型中的定语从句里的谓语动词常用虚拟浯气表示将来,动词形式用动词的过去式:意思是"该干某件事了,时间已经有些晚了"。如:

It is time we left.我们该走了。

It is time we went to bed.我们该睡觉了:

It is time we summed up our results.我们该总结我们的成绩了。

虚拟语气用在简单句中

下面是虚拟语气用在简单句中较常见的两种情况,皆表祝愿。如:

1)动词原形1ive用在Long live…中。如:

Long live the Communist Party of China! 中国共产党万岁!

Long live the people! 人民万岁!

(1ive在此也是虚拟语气的一种动词形式,不可改为lives)

2)May用在句子开头(多用在正式的文体中)。如:

May good luck be yours.祝你顺利。

May you be happy.祝你快乐。

May you do even better! 祝你取得更大成就!

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every https://www.wendangku.net/doc/f98232722.html, every day.—Yes, she does. / No, she doesn’t. 现在进行时 1、定义:表示现在或现阶段正在进行或发生的动作。句中常有now,look,listen等词。 如:I am washing clothes now. Look! Liu Tao is climbing the tree. Listen! Jane is singing in the music room. 2、构成:be动词(am/is/are)+ 动词现在分词(V-ing) 3、动词现在分词构成: ?一般是在动词原形后加ing 如:read-reading,drink-drinking,eat-eating,look-looking ?以不发音的e结尾的动词,去掉e,再加ing 如:write-writing,make-making,ride-riding,take-taking ?以重读闭音节结尾,如末尾只有一个辅音字母,要双写这个字母,再加ing 如:sit-sitting,swim-swimming,put-putting,run-running,stop-stopping,get- getting,begin-beginning,jog-jogging,forget-forgetting 4、动名词其实就是动词的现在分词,它既有名词性质(可作主语),又有动词性质(可带宾语)。 如:Asking the way My hobby is collecting stamps. He is good at skating. 5、现在进行时的句型转换: 肯定句否定句一般疑问句及回答 —Is he running now? He is running now.He isn’t running now. —Yes, he is. / No, he isn’t.

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常见易混淆英语语法

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英语语法专业术语新

英语语法专业术语 语法 grammar 句法 syntax 词法 morphology 结构 structure 层次 rank 句子 sentence 从句 clause 词组 phrase 词类 part of speech 单词 word 实词 notional word 虚词 structural word 名词 noun 专有名词 proper noun 普通名词 common noun 可数名词 countable noun 不可数名词 uncountable no 抽象名词 abstract noun 具体名词 concrete noun 物质名词 material noun 集体名词 collective noun 个体名词 individual noun 介词 preposition 连词 conjunction 动词 verb 主动词 main verb 及物动词 transitive verb 不及物动词 intransitive verb 系动词 link verb 助动词 auxiliary verb 情态动词 modal verb 规则动词 regular verb 不规则动词 irregular verb 短语动词 phrasal verb 限定动词 finite verb 非限定动词 infinite verb 使役动词 causative verb 感官动词 verb of senses 动态动词 event verb 静态动词 state verb 感叹词 exclamation 形容词 adjective

副词 adverb 方式副词 adverb of manner 程度副词 adverb of degree 时间副词 adverb of time 地点副词 adverb of place 修饰性副词 adjunct 连接性副词 conjunct 疑问副词 interrogative adverb 关系副词 relative adverb 代词 pronoun 人称代词 personal pronoun 物主代词 possessive pronoun 反身代词 reflexive pronoun 相互代词 reciprocal pronoun 指示代词 demonstrative pronoun 疑问代词 interrogative pronoun 关系代词 relative pronoun 不定代词 indefinite 物主代词 possessive pronoun 名词性物主代词 nominal possessive 形容词性物主代词 adjectival possessive pronoun 冠词 article 定冠词 definite article 不定冠词 indefinite article 数词 numeral 基数词 cardinal numeral 序数词 ordinal numeral 分数词 fractional numeral 形式 form 单数形式 singular form 复数形式 plural form 限定动词 finite verb form 非限定动词 non-finite verb form 原形 base form 从句 clause 从属句 subordinate clause 并列句 coordinate clause 名词从句 nominal clause 定语从句 attributive clause 状语从句 adverbial clause 宾语从句 object clause 主语从句 subject clause 同位语从句 appositive clause 时间状语从句 adverbial clause of time 地点状语从句 adverbial clause of place

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