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enough的用法

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今天我们来学习enough的用法,快来一起学习吧。下面小编就和大家分享,来欣赏一下吧。

enough的用法

1.用作名词,表示“足够(的数目或数量),没有复数形式,但根据情况可表示复数意义.如:

Enough has been said of this problem.有关这个问题,已经谈得够多了.

Enough were present to constitute a quorum.出席的人数够法定人数.

2.用作形容词,通常修饰复数名词或不可数名词,可放在被修饰名词之前或之后(但以前置为多见).如:

He has enough money to buy a car.他有足够的钱买辆汽车.

We have time enough to get to the airport.我们来得及赶到机场.

有时与某些具有形容词意味的名词连用,此时 enough 必须后置,且该名词通常不用冠词.如:

I was fool [=foolish] enough to accept his offer.我接受他的提议真是太傻了.

3.用作副词,可用来修饰形容词、副词、动词等,此时总是放在被修饰语之后.如:

You don’t relax enough.你休息不足.

I wonder if it’s large enough.我不知道它是否够大.

You’re not driving fast enough.你开车开得不够快.

修饰形容词时要后置,即使被修饰的形容词后面修饰有名词也是如此.如:

We haven’t got a big enough house.我们的房子不够大.

He was a handsome enough child.他是一个非常帅气的孩子.

但是,如果enough修饰整个名词词组,则置于形容词之前.比较:

We haven’t got big enough nails.我们没有够大的钉子.

We haven’t got enough big nails.我们没有足够多的大钉子.

4.可用于某些副词之后对一情景进行评论.可以这样使用的词有curiously,funnily,interestingly,oddly,strangely,surprisingly等.如:

Strangely enough,I won first prize.说来奇怪,我得了一等奖.

Curiously enough,he seemed to know that already.说也奇怪,他似乎已经知道这事了.

Interestingly enough,this proportion has not increased.说也有趣,这个比例并未增加.

Oddly enough,we didn’t meet,although we were both there.真怪,我们没有碰面,虽然我们都在那里.

5.在通常情况下,enough不能用作表语,除非其主语是代词或是那些具有(或暗示有)数量意义的名词.如:

One such dictionary is enough.这样的词典一本就够了.

Five men will be quite enough.5个人完全够了.

I did all I could,but it wasn’t enough.我做了我能做的一切,但是还不够.

比较下面的正误句子:

误:The beer isn’t enough.啤酒不够.

正:There isn’t enough beer.啤酒不够.

误:Was the time enough?时间够吗?

正:Did you have enough time?你们时间够吗?

6.用于cannot...enough,表示“无论怎样……都不够”.如:

I cannot thank you enough.

You cannot be careful enough.你越仔细越好.

I cannot say enough in praise of his work.我对他的工作赞扬不已,怎么说也不嫌过分.

need用法小结

need用法小结

海南省北京师范大学万宁附属中学 于洪伟

need既可以用作情态动词、实义动词,还可以用作名词。need词义简单,用法却不简单。

一、用作情态动词

表示必要,后接动词原形,即:need + do

1.通常用在疑问句、否定句中。

疑问式:Need +主语+ do…?

否定式:needn’t + do

Need you go yet? 你一定要去吗?

No, I needn’t. 不一定要去。

You needn’t clean the house now. 你不必现在打扫房子。

2. need引导的疑问句,肯定回答要用must。

—Need I call him up now? 我需要现在给他打电话吗?

—Yes, you must.是的,需要打。

—No, you needn’t.不,不需要现在打。

3. need have done的否定式或疑问式,表示“ 做了不必做的事” 。

needn’t have done sth 本不必做某事(事实上却做了)

Need +主语+ have done sth? 当时非得做某事吗?

You needn’t have told him because I had already told him about it . 你本没必要告诉他,因为我已经告诉他这件事了。

Need you have sold the house? 你那时非得把房子卖掉吗?

二、用作实义动词

表示需要(require, want, lack)或义务。

1.可用于 肯定句 、 疑问句 和 否定句。

肯定:need + to do sth

否定:don’t / doesn’t /didn’t need + to do sth

疑问:do +主语+ need to do sth?

I need to consult a dictionary. 我需要查词典。

Does she need to do the cooking? 她需要做饭吗?

Yes, she does.是的,她需要做饭。

No, she doesn’t.不,她不必做饭。

She doesn’t need to do the cooking. 她不必做饭。

2. need + 名词

They need my love and care. 他们需要我的关爱。

3. need doing 表示被动含义。

The clothes need washing.这些衣服需要洗了。

= The clothes need to be washed.

三、用作名词

We are in need of your help.我们需要你的帮助。

A friend in need is a friend indeed. 患难见真情。

There is no need to persuade him to follow my advice .没必要说服他采纳我的意见。

There's no need for you to start yet. 你现在还不必动身

There isn't much need for further research. 没有必要进一步的实验。

satisfy /meet their needs满足他们的需要

prefer的用法

prefer在英语中用作动词(verb)意思是更喜欢;宁愿, 后面可以接名词,不定式或者现在分词,也就是这样:

prefer sth. to sth.

prefer to do...

prefer doing...

栗子:I prefer a small city to a big one.

I prefer to live in a tropical city. = I prefer living in a tropical city.

还有一种常见的结构是:

prefer to do.... rather than do...

栗子: Miranda prefers to take a bus rather thanwalk .

米兰达宁愿坐公交车,而不是走路。

最后要介绍的是 would prefer 组合,缩写形式是(I`d prefer)

我们可以用would prefer 表示某人在某种场景中想要(做)的事物。

(At a party)

"Would you prefer beer or juice?" "Beer, Please."

在这个组合后面需要注意,我们只能接不定式,不用现在分词,像这样:

I`dprefer to go to the library today

rather thanstay at home.

最后问问 :

Which do you prefer, dogs or cats? Why?

希望大家可以在生活中多多用到prefer这个词,以及它正确的表达方式哦~下次见~

while用法详解

1

while作名词:

while作名词,作“一会儿”“一段时间”解。

once in a while 偶尔


Several years ago, Feng Jicai put down his pen for a while.

几年前,冯骥才有段时间停止了写作。

I’ll be backin a little while.

我一会儿就回来。

Coming to another country to study requires a big adjustment and it takes a while to fit it.

来到另一个国家求学,需要花一段时间来适应。

2

while作连词:

引导时间状语

意思是“当...时候”

We must strikewhile the iron is hot.

趁热打铁。

Mary watched TV while she ate her supper.玛丽边吃饭边看电视。

While she was listening to the radio, she fell asleep. 她听着收音机睡着了。

引导让步状语从句

意思是“虽然…但是….”、“尽管…但是…” (多放于句首)

While  I agree with your reasons, I can't allow it.

尽管我同意你的理由,但我不能允许这样做。

While  (he was) respected, he is not liked.

他虽受人尊敬,但并不被人喜欢。

引导条件状语

意思是“只要”, 这时候while相当于 as long as

There will be life while  there is water and air.

=There will be life  as long as there is water and air.

只要有空气和水,就有生命。

3

while作并列连词:

while作并列连词时,前后分句有对比意味,表示句意的转折 ,作“而;却(whereas)”解。

eg:

Waving one’s hand is to say “Goodbye”. Nodding the head means agreement,while shaking it means disagreement.

挥手表示再见,点头表示同意,而摇头表示不同意。

Some people waste food while  others haven't enough.有些人浪费粮食,然而有些人却吃不饱。

You like sports, while  I prefer music.你喜欢体育,而我更喜欢音乐。

Cloning plants is straightforwardwhile cloning animals is very complicated.

克隆植物简单,但克隆动物就非常复杂了。

史上最全的not only...but also的用法

一、not only…but的主要用法

1、连接主语:

Not only I but also Tom and Mary are fond of watching television.

不仅我,而且汤姆和玛丽都喜欢看电视。

2、连接宾语:

The problem for the recipient was trying to guess not only who the sender was, but also what his secret feelings might be.收信人不仅要尽力猜出是谁的,还要推测寄信人内心有什么想法。

3、连接谓语动词

The Americans and the British not only speak the same language but also share a large number of social customs.英国人和美国人不但语言相同,而且有很多相同的风俗习惯。

注意not only…but also连接的动词一般不重复,这与汉语不同。如汉语说“我不仅懂英语,而且懂俄语”,英语则说“I know not only English but also Russian”,而不说“I not only know English but also know Russian”.再如:“气体不仅改变形状,而且改变体积”,英译为“A gas changes not only in shape but also in volume.”(注意介词常重复)

4、连接表语:

Shakespeare was not only a writer but (also) an actor 莎士比亚不仅是一位剧作家,而且是一位演员。

5、连接宾语补足语:

Light and bright colors make people not only happier but more active.浅色和鲜艳的颜色不但使人看了高兴,也会使人更加活泼。

6、连接状语:

If your friend reminds you kindly of your faults, take what he says not merely pleasantly but thank fully. 如果低你的朋友善意地指明出你的缺点,你不但要欣然接受,而且要心怀感激之情。

7、连接从句:

He didn’t let us off the hook until we had proved not only that we knew what an organism was but also that we had the fortitude to stand up for the truth. 直到我们证明了我们不仅知道什么是生物体,而且具有坚持真理的不屈不挠精神时,他这才放过我们。

8、连接定语:

Man has become master not only of the sky but also of the space. 人类不但征服了天空,而且征服了太空。

9、连接句子:

I not only heard it, but (also) I saw it. 我不仅听到、而且看到了它。 Not only…but also连接句子时, not only 可以置于句首表示强调,这时第一分句要采用倒装结构。

例如:

Not only has he a first-class brain but also he is a tremendously hard worker. 他不仅有着头等聪明的脑子,而且工作很能吃苦。

Not only had the poor man been arrested but he had been sent to prison as well. 这个可怜的人不仅被逮捕,而且被投进监狱。

Not only do the professors have their own ideas on the matter, but the students have theirs too.对这件事不仅教授们有自己的看法,学生们也有自己的想法。

10、用于 it is…that 强调结构

It is not only the scientist and the physician who need a long special training now, but the computer expert, the accountant, and the business manager. 现在,不仅科学家和医生需要长期的专门训练,计算机专家、会计师和企业经理也需要这种训练。

It is not only what we do, but also what we do not do, for which we are accountable. 我们不但要对我们所做的事负责,而且要对我们没有去做的事负责。

二、not only…but的省略及其变体

1、Not only…but also中的also可以省略。有人认为该句型所连接的第二部分最高级形容词或它所表示的范围、程度、影响等超过第一部分时,常将also省略。

例如:

He was not only a successful writer but (also) the greatest poet of his time. 他不仅是一位成功的作家,而且是他那个时代最伟大的诗人。

He is famous not only in China but (also) in the whole world. 他不仅闻名中国,而且闻名全球。

Not only do they suffer less pain than most women in labor, but the town boasts an unusually

low rate of infant mortality. 这不仅使她们比大多数产妇受痛苦,而且使城市婴儿死亡率大大降低。

2、not only…but also句型一般只省略also,但在连接句子时,有时也可见到省略but甚至but also的情形。

例如:

Not only was I tired, I was also cold.我不光困倦, 还感到很冷。(省去了but)

George not only made an important friend, he also learned about the frontier. (省去了but)

Since moisture is needed for rain, dry air in the morning not only allows the spider to get an early start, is also means a dry day. 有了湿度才会下雨,因此,早晨空气干燥不仅使蜘蛛早点开始结网,而且意味着这一天不会下雨。(省去了but)

Not only bas she been an excellent wife, she has been a better husband than I’ll never be.她不仅是一个极其出色的妻子,而且是一个我永远也做不到的好丈夫。(省去了but also)

Not only were there no traces of drinking water in the room, there was not sufficient water found in the dead star’s stomach to have comfortably taken the tablets with. 不仅房内没有饮用水的痕迹,在这位已故影星的胃里也没发现有把这些药丸舒适地送下去的水。省去了but also)

3、not only…but also的形式比较固定,但也会出现but与also被分隔开来的情形。例如:Not only the mother but the children are also sick.

Not only is his right lung affected but his left lung is also.他不但右肺被感染,而且左肺也被感染了。

4、not only A but also B的替代式常见的还有not only A but B…as well, not only A but B too, not merely A but also B, not just A but also B, not…alone…but 等。

例如:

Not only my mother was unhappy, but Mary, too. 不但我妈妈不高兴,玛丽也不高兴。

In jurisprudence it is a well-known principle that justice should not merely be done but should also be seen to be done.在法理学方面,人所共知的原则是:对受害者不仅应当公正对待,而且应当让人们看到他得到了公正的对待。

Not just the people of our nation, but all the people of the world have profited from his work.不仅我们国家的人民,而且全世界所有的人民,都从他的研究工作中得到了好处。

Not poets alone, nor artists, nor that superior order of mind which arrogates to itself all refinement, feel this, but dogs and all men.不仅诗人,艺术家以及那些自命不凡、思想杰出的人觉得如此,连狗和普通人也有同感。

三、not only…but用法注意事项

1、”not only A but also B”结构中的A和B通常是同等成分。由于同一成分常常由同一词类的词来担任,所以A与B常常也是同一词性,这从本文第一部分的例句中即可看到。但是,也有A与B属于不同词性的情形。如:”He is not only very clever, but also a very hard worker, and he likes to do everything well.(他不但聪明,而且能下功夫。他喜欢把每一件事都做得很好。)其中A是形容词,B是名词,但两者均在句中作表语,因此仍是正确句子。然而,在“He not only plays the piano, but also the violin.”一句中,A是动词,B是名词,不是同一成分,因此语法学家认为此句有点欠妥,至少在书面语中就是如此。如改为“He plays not only the piano, but also the violin”就无懈可击了,再看下面二例:

The surprise grant not only enabled Dad to finish A&T, but to graduate first in his class.这笔意外的奖学金不仅使我父亲能读完农业和技术学院,而且毕业成绩名列榜首。

1、Not only spoke English very carefully, but very clearly as well.

2、有人认为,not only…but also不能用于否定句。汉语中用于否定句中的“不但…而且”在英语中要用as well as 表示。如“不但我不想看戏,而且他也不想看戏”可译作“He, as well as I, doesn’t want to see the play.”不过,这条规则也有例外

请看下面二例:

Not only did none of us know how the crime was to be committed, we didn’t even know what the crime was to be!

Not only don’t I know the population of Nepal, I don’t know where in god’s world it is!我不但不知道尼泊尔人口,而且连它究竟在哪里也不知道!

这两个例句有几个共同点:都是连接否定分句,都是倒装句,都没有用but also。下面一例出自一位美国作家之手,所不同的是,not only…but连接的是并列谓语,第一个动词是否定的,第二个动词则是肯定的:

Nonetheless, as he described Mary’s attitudes her accomplishments, he found himself wishing that she cared more about the police side of his life than she seemed to, that she might understand it as intimately, say, as the woman opposite him. But this motion seemed to him so disloyal to Mary that he not only did not articulate it, but at once tried to suppress it.

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