a
[ei,ə]
art.一(个), 每一(个), 任一(个)
例句与用法:
I have engaged a room at this hotel.
我已经在这个旅馆里预订了一个房间。
You should give it a try.
你应该试一试。
I don't care what a car looks like as long as it gets me from A to B.
我倒不在乎汽车的样子,只要能把我从一处载到另一处就行了。
The function of an adjective is to describe or add to the meaning of a noun.
形容词的作用是描述或增加名词的意思。
China is a developing country.
中国是一个发展中国家。
You're just a good for nothing bum!
你一无是处!
Declension means varying the forms of nouns, pronouns and adjectives in a sentence.
变格是指名词、代词和形容词在句中的形式变化。
Would you do me a favor?
你能帮我一个忙吗?
词形变化:
名词复数: a's |
art.
1. 一
He has got a job in Los Angeles.
他已在洛杉矶找到一份工作。
2. 任一
A triangle has three sides.
三角形有三条边。
3. 某一
A Mr. Brown wishes to see you.
一位叫布朗的先生想见你。
4. 每一
We met once a week.
我们每周见面一次。
aabbr.1.■abbreviation2.■abundant3.■accommodation4.■account5.■acreage6.■anthracite7.■arc8.■area9.■argent10.■arrive11.■assumed12.■atmosphere13.■atomic14.■atto-15.■audit16.■auditor17.■August18.■available19.■aviation20.■aviator21.■axis1.■希腊语的第一个字母α a1[强 ei;弱ə]1.■indefinite article2.■(非特指的)一(个);一(种):We planted a tree.我们种了一棵树。3.■(同类事物中的)任何一(个)[相当于 any]:A gun is dangerous.枪是危险品。4.■每,每一(个):once a day一天一次twice a week每周两次5.■[用于由定语修饰的抽象名词之前]某一种:a happiness that she couldn’t quite hide她所按捺不住的内心喜悦6.■[用于由定语修饰的专有名词前,表示此专有名词的一时特色或某些属性]:It was a cold December.那是一个寒冷的12月。7.■[用于某些物质名词之前]一种:a black tea一种红茶8.■[用于具体化了的、部分化了的或表示经验的抽象名词之前] 一个;一种;一件;一次;一番:They have had a friendship of ten years.他们已有10年的友谊。9.■[用于姓氏或表示政党、团体、民族等的名词之前]…的一员:a Communist一名共产党员10.■[用于人名、地名或表示日期、节日等的专有名词之前]某一(个)[相当于 a certain]:A Miss Helen called you just now.有一位海伦小姐刚刚打电话给你。11.■[用于专有名词之前]类似…的一个[相当于 one like]:a Watergate一则水门事件式丑闻12.■[用于表示饮料、食物的某些物质名词之前]一客;一份:a beer一杯啤酒13.■同一(个)[相当于 the same]:the people all of a mind同心同德的人们(或持相同意见的人们)14.■[用于通常一起出现的形象或两件成套配对的器物之前]一套,一副,一组:a cup and saucer一只带茶托的茶杯15.■[用于若干复数形式的名词之前,表示“单一”的概念]:a falls in the Niagara River尼亚加拉河上的一幕瀑布16.■[用于非特指的单数名词之前]:A man falls overboard!有人落水啦!17.■[用于可数的集合名词和某些数量词之前]:a barracks一座兵营18.■[用于作为典型事例的人名或事物名词]:a Cicero in eloquence一个口才和西赛罗一样(好)的人19.■[与定语修饰的表示数量、时间、年龄等的词语连用,表示说话者的某种态度或情感]:Her grandfather is a healthy 90.她祖父现年90岁,仍很健康。20.■[用于商标名、人名等之前]一件…牌(或型)产品;一幅…的画像,一个…的雕塑;一件…的作品:a Boeing 737一架波音 737 型飞机21.■[用于 few,little,lot,great many,good many,score,dozen,hundred,thousand,million,billion 等词语之前表示数量]:a million thanks非常感谢22.■[用于 world,moon,sun 等独一无二的事物之前,表示此事物的一时特色或某种属性]:a crescent moon新月23.■[用于百分数、基数词或自 third 起的序数词之前表示分数]:a tenth十分之一24.■[用于表示动作的名词或动名词之前]:I must get (或 have) a wash.我必须洗一下。25.■[口语][用于某些不带定语修饰的名词之前,表示程序]:I was there for a time.我在那里呆了一些时候。26.■[用于否定结构,表示强调,相当于 a single]:never a one没有一个(人)27.■[a 一般用于读音以辅音音素起首或以 /h/音起首的词之前,如:a child, a home,a uniform, a eunuch;an 一般用于读音以元音音素起首或不发音的 h 起首的词之前: a2[ə]v.aux.1.■[口语、方言][用于虚拟语气,= have]:You should a thought of it.你该想到这一点。 a3[ə]prep.1.■[口语][通常与名词连用,=of]:a cup a tea一杯茶2.■[古语](属于)…的:
aa1.■=about;2.■absolute;3.■acre;4.■active;5.■adjective;6.■after;7.■anonymous;8.■anno([拉]=in the year of);9.■ante([拉]=before)
(元音前用 an)
determiner
- used when mentioning someone or something for the first time in a text or conversation
[用于第一次提及某人或某事物]有个,某个,一个。 比较 the
a man came out of the room.
一个男人走出了房间。
it has been an honour to have you.
你能来真是荣幸。
we need people with a knowledge of languages.
我们需要有语言知识的人。
■used with units of measurement to mean one such unit
[与度量单位连用,表示一个单位]一
a hundred.
一百。
a quarter of an hour.
一刻钟。
■[with negative]one single; any
一个,任何一个
I simply haven't a thing to wear.
我简直没有衣服可穿。
■used when mentioning the name of someone not known to the speaker
[用于提及说话者不认识的人]某一个
a Mr Smith telephoned.
有个史密斯先生打电话来过。
■someone like (the name specified)
[与具体人名连用]像…的人
you're no better than a Hitler.
你就像个希特勒。 - used to indicate membership of a class of people or things
[用于表示某一类人或事物]一个,一
he is a lawyer.
他是律师。
this car is a BMW.
这是辆宝马车。 - in, to, or for each; per (used when expressing rates or ratios)
[用于表示速度或比率]每
typing 60 words a minute.
每分钟打60个词。
a move to raise petrol prices by 3p a litre.
将汽油价格每升提高三便士的动议。
- Middle English : weak form of Old English ān 'one'
- On the question of using a or an before words beginning with h, see usage at an
a2
abbreviation for
- ■(in travel timetables) arrives
[用于旅行时刻表]。 同 arrives
Penzance a 0915.
9点15分到达彭赞斯。
■[in combination](in units of measurement) atto- (10-18)
(度量单位)。 同 atto-
■(Brit)(with reference to sporting fixtures) away
(英)(比赛的安排)。 同 away
March 15 Sheffield United (a).
设菲尔德联队将于3月15日在客场举行比赛。
Latin
■(used before a date) before
在…之前(用于日期之前)
a1200.
1200年前。
- (a)(Physics)acceleration
(物理)加速度
a
名词 a:
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
同义词:angstrom, angstrom unit
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
同义词:vitamin A, antiophthalmic factor, axerophthol
one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
同义词:deoxyadenosine monophosphate
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
同义词:adenine
the basic unit of electric current adopted under the Systeme International d'Unites
the 1st letter of the Roman alphabet
同义词:letter a
the blood group whose red cells carry the A antigen
a
■A country must have the will to repel any invader.
一个国家得有决心击退任何入侵者。
■A new upsurge in construction is in the making.
一个建设的新高潮正在兴起。
■A syndicate of local businessmen is bidding for the contract.
一个当地企业家的联合组织在向这一合同投标。
■A man appeared at the castle gate in the guise of a woodcutter.
一个男子打扮成樵夫的模样出现在城堡的门口。
■A peevish child is unhappy and makes others unhappy.
一个脾气暴躁的孩子自己不高兴也使别人不高兴。
■It's natural to slack2 off towards the end of a hard day's work.
一天紧张工作快结束的时候有些放松是自然的。
■He twisted up with a sudden stab of pain.
一阵突然的剧疼使他挺不起身来。
■I got a new coat in that store last week.
上礼拜我在那家店买了一件新外套。
■That is not, properly speaking, a dictionary, but a grammar.
严格说来; 那不是一本词典,而是一本语法书。
■His strength in a crisis is an ace in the hole.
临危不惧是他的看家本领。
■It may take a long time to find a solution to the problem.
也许要花很长时间才能找到解决这个问题的办法。
■As a matter of fact, I've never been there before.
事实上我从未到过那儿。
■He had had a blackout after the accident.
事故发生后,他晕过去一阵子。
■A cloud is a mass of vapor in the sky.
云是天空中的水汽团。
■It's a tight squeeze to get five people in that small car.
五个人坐在那个小车子里真是太挤了。
■Our firm is likely to reap a big profit this year.
今年我们公司很可能获得巨额利润。
■The bank is a ten minutes' run from the hotel.
从旅馆到银行跑步需十分钟。
■Economically, the country is in a very healthy state.
从经济学的观点来说,国家处于很兴旺的状态之中。
■He took out a fire insurance policy for his house.
他为自己的房子办理了一份火险保险单。
■He got a lot of dope from the secretary.
他从秘书那里获得许多内部消息。
■He bounced into the room with a springy step.
他以轻快的跑步跳进房间。
■They denounced him to the police as a criminal.
他们向警方告发他是罪犯。
■They cleaved a path through the wilderness.
他们在荒原中开辟出一条路。
■They all maintained a reverent silence.
他们都保持肃静。
■He lugged a heavy handcart along.
他使劲拉走那笨重的手推车。
■He pushed hard on the brake pedal to avoid a collision.
他使劲踩下煞车踏板以避免撞车。
■He let himself down slowly by means of a tope.
他借助一根绳子慢慢地下来了。
■He looks a suspicious character.
他像个可疑的人。
■He judged the distance to a nicety.
他判断距离很正确。
■He cut off a bunch of grapes to entertain us.
他剪下一串葡萄招待我们。
■He talks like a parrot and just repeats what he heard.
他只是鹦鹉学舌,拾人牙慧罢了。
■He bit off a large piece of the apple.
他咬下一大块苹果。
■He took a lot of flak for his stand against abortion.
他因坚持反对堕胎而饱受责难。
■He qualified in London as a teacher of English overseas.
他在伦敦取得了海外英语教师的资格。
■He is on a par with his brother in intelligence.
他在智力方面同他的弟弟不相上下。
■An idea popped into his mind like a flash.
他头脑里突然闪过一个念头。
■His interest in photography is only a passing fad.
他对摄影的爱好仅是一时的兴致。
■He tried to put a bold face on his failure.
他对自己的失败装出一副满不在乎的样子。
■He has a lot of clout with the board of directors.
他对董事会有很大的影响力。
■He has got a lot of mileage out of the shoes.
他已将那双鞋穿够了本钱。
■He took sick and died a week later.
他得了病,一周后就死去了。
■He is always raising a stink about this, that or the other thing.
他总是为了这个、那个的大吵大闹,什麽事都有得吵,有得闹。
■He gave a description of what he had seen.
他描述了他所见到的一切。
■He is a very good footballer; you ought to see him in action.
他是一位出色的足球运动员,你应该看他踢球。
■He is a great guy, a chip off the old block.
他是一位好人,就像他父亲一样。
■He was a dishonor to his regiment.
他是那个团的耻辱。
■He has a knack of falling out with everyone.
他有个怪癖,总是和每个人吵架。
■She is pounding out a new rune on the piano.
他正在钢琴上弹奏一支新曲。
■He has a yen to be alone in a boat.
他渴望独自待在一条船上。
■He's such a good swimmer that he makes me look sick.
他游得这么好,真叫我相形见绌。