an>art.(冠词)an>

1. 一个（在元音字母前代替不定代词a）
2. 任一，每一（个）
3. 某一
4. 一种
5. 对每个，为了每个
6. 在每个

an>_null.an>

1. 安，中国和韩国姓氏的音译

an>abbr.(缩略词)an>

1. =anglo-Norman 诺曼系英国人，盎格鲁诺曼语

an>Noun:an>

1. an associate degree in nursing

1.（在发音以元音开始的单词前，代替不定冠词a）
an is used instead of 'a', the indefinite article, in front of words that begin with vowel sounds.

1.

1. 丙烯腈：且共聚反应速度大于N-苯基马来酰亚胺的均聚反应速度;共聚物的特性粘数随转化率的增加而降低,反应物摩尔分数的改变基本不影响共聚物的玻璃化转变温度.[关键词]N-苯基顺丁烯二酰亚胺(NPI) 丙烯腈(an) N-乙烯基甲酰胺

2. 岸：村子前面有一条(tiao)碧(bi)蓝(lan)的小河,河水缓缓(huan)地向东流(liu)去,河两岸(an)有田野(ye)和青山. 山坡(po)上开着各种颜(yan)色的鲜(xian)花. 河上有一座白色的小桥. 一群鱼儿在河里游来游去. 五月三十日是小书虫的生日,

3.an：aneuploidy; 非整倍体

4.an：acoustic neuroma; 听神经瘤

5.an：aneurysm; 脑动脉瘤

6.an：auditory neuropathy; 听神经病

假期

B：It’s such (a beautiful/an exquisite/ a lifelike) statue.*
这尊雕像真是（漂亮/精致/栩栩如生）。

A：I agree.
是这样。

健康和社会问题

an

A：He died of (lung cancer/an overdose/ AIDS).
他死于（肺癌/过量吸食毒品/艾滋病）。

B：That’s horrible.
真可怕。

学校

an的翻译

B：What’s your major?
你的专业是什么？

an

A：I’m (a business/an art/an engineering) major.
我专业学的是（商务/艺术/工程）。

He gave her an admiring glance.

他向她投以敬慕的一瞥。

I always rest for an hour after dinner.

晚饭后，我总要休息一小时。

Australia is an English speaking nation.

澳大利亚是一个讲英语的国家。

Advice and correction roll off him like water off a duck's back.

劝导对他好象水过鸭背似的(不起作用).

The driveway makes a hook around an old tree.

车道绕过一棵老树来了个急转弯.

Television allows viewers to experience an event without any loss of immediacy.

电视让观众可以即时经历某一事件.

They came to an accord that profits should be shared equally.

他们达成协议,收益由大家均分.

Hearing that there was an emergency case, the doctor put down his chopsticks and left at once.

听说有急诊, 医生撂下筷子就走.

Gold prices are often seen as an indicator of inflation.

黃金价格常常被看作是通货膨胀的指标.

an infected cut looks angry.

感染的伤口看起来发炎了.

In the course of time , this kind of lantern has become an exclusive of the Shens.

后来, 这种灯笼成了沈家的绝活.

He established an alibi to the charge of murder.

他证实在谋杀案发生时他不在场.

A stranger who is kind is a relative; an unkind relative is a stranger.

善良的陌生人是亲戚, 冷漠的亲戚是陌生人.

She flopped into an armchair.

她猛然坐到扶手椅上.

Despite her scruffy clothes, there was an air of sophistication about her.

尽管她衣衫褴褛, 但神态老练世故.

He is recognized internationally as an authority in this field.

国际上承认他是这方面的一个权威.

After having spent wholemornings on the river, I always go home with an empey bag.

把每天上午的时间都花在河上之后, 我总是带着空包回家.

He's denied having an affair with secretary but of course there's no smoke without fire.

他不承认他和他的秘书有染,但是无风不起浪啊.

This was an act of extreme brutality.

这是一种极端野蛮的行为.

Then an idea suggested itself to her.

这时她脑中浮现出一个想法.

I think we can fit in an additional room.

我想我们可以再加建一间房子.

He's an ardent supporter of the local football team.

他是本地足球队的热情支持者.

an idea flashed into [ through ] his mind.

他脑子里闪过一个 念头.

He has an austere manner.

他态度严肃.

The candidate will take an oral examination.

那个应试者将参加口试.

I've been chopping away for half an hour but the tree is still standing.

这树我砍了半小时,但还未把它砍倒.

They swore an oath to carry out their duties faithfully.

他们宣誓忠实履行自己的职责.

He maintained an attitude of high seriousness.

他保持了极为认真的态度.

It's polite to yield up your seat on the bus to an old lady.

在公共汽车上给老太太让座是礼貌的.

The football match came to an end, and the crowd soon cleared away from the ground.

足球赛结束了, 人群很快从球场散去.

He dived his hand into his pocket in an attempt to find the key.

他把手伸到口袋里摸,试图找到那把钥匙.

2. 通常来说，a 是用在以辅音开首的词前面，an 是用在以元音开首的词前面；
3. 可数名词前面用 a（或 an），不可数名词前面不可用a（或 an)，如可以说 a healthy boy，却不可以说 a health；
4. 在特定情况下，a（或 an）可以用在复数形式前面:习语中有a few (books)，a great many (books)等表示方法。在表示时间或款项的短语前面，如 a further five minutes。 在若干在形式上是复数而在意思上是单数的单词前面，如 a barracks，a links。 在美国口语中，如 a good ways，a long ways；
5. a （或 an）有时有“一个而不是那所要的一个”的意思。

   I got a letter indeed，but it was from a friend.
   事实上，我收到了一封信，但只是一个朋友的来信。

6. a 也有“任何一个”的意思。

   I wanted to read a book，I did not care whether it was a history，a novel，or a biography.

7. a 与 few 搭配使用时，few 是“很少”，有“几乎没有”的意思。a few 是“若干”，有“颇有几个”的意思。注意，only a few 却等于 few，也是“很少”的意思。

• ☆ 12世纪进入英语，直接源自古英语的an，意为一个，唯一。