a
a是什么意思、a怎么读
读音：[ə]
[ə]
a 基本解释
art. (用于可数名词或单数名词前，表示未曾提到的)一(人、事、物); 用于前有形容词或后有短语的不可数名词前; 任何一; 每一
a 词组短语
- coenzyme A
- provitamin A
- anhydrovitamin A
- azure A
- echinochrome A
- neovitamin A
- Nile blue A
- Nipagin A
- vitamin A
- block a line
a 详细解释
indefinite article
- （用于可数名词或单数名词前，表示未曾提到的）一（人、事、物）
used before countable or singular nouns referring to people or things that have not already been mentioned- a man/horse/unit
一个人；一匹马；一个单位 - an aunt/egg/hour/x-ray
一个姑母；一个鸡蛋；一小时；一张X光片 - I can only carry two at a time.
我一次只能带两个。 - There's a visitor for you.
有位客人找你。 - She's a friend of my father's (= one of my father's friends) .
她是我父亲的一位朋友。
- a man/horse/unit
- （用于前有形容词或后有短语的不可数名词前）
used before uncountable nouns when these have an adjective in front of them, or phrase following them- a good knowledge of French
精通法语 - a sadness that won't go away
挥之不去的悲愁
- a good knowledge of French
- 任何一；每一
any; every- A lion is a dangerous animal.
狮子是猛兽。
- A lion is a dangerous animal.
- （表示为某一群体或职业中的一员）
used to show that sb/sth is a member of a group or profession- Their new car's a BMW.
他们的新轿车是辆宝马。 - She's a Buddhist.
她是个佛教徒。 - He's a teacher.
他是教师。 - Is that a Monet (= a painting by Monet) ?
那是莫奈的画吗？
- Their new car's a BMW.
- （用于视为一体的两个名词之前）
used in front of two nouns that are seen as a single unit- a knife and fork
一副刀叉
- a knife and fork
- （用于某些数字前，代替one）
used instead of one before some numbers- A thousand people were there.
那里有一千人。
- A thousand people were there.
- （用于价格、数量、比率等）一，每一
used when talking about prices, quantities and rates- They cost 50p a kilo.
其价钱是一公斤50便士。 - I can type 50 words a minute.
我每分钟能打50个单词。 - He was driving at 50 miles an hour.
当时他正以每小时50英里的速度驾车。
- They cost 50p a kilo.
- 像（某人）的人；…式的人物
a person like sb- She's a little Hitler.
她是个小希特勒。
- She's a little Hitler.
- （用于某人姓名前，表示说话者不认识此人）有个
used before sb's name to show that the speaker does not know the person- There's a Mrs Green to see you.
有位格林太太要见你。
- There's a Mrs Green to see you.
- （用于一星期中某天的名称前，表示具体某一天）
used before the names of days of the week to talk about one particular day- She died on a Tuesday.
她是在一个星期二去世的。
- She died on a Tuesday.
a 同义词辨析
〔辨析〕通常用于单数可数名词之前，泛指某类人或事物中的一个。
〔例证〕
My friend needs a bilingual dictionary.
我的朋友需要一本双语词典。
Would you like a sandwich?
要来份三明治吗？
There is a bird sitting in the tree.
树上卧着一只鸟。
我的朋友需要一本双语词典。
Would you like a sandwich?
要来份三明治吗？
There is a bird sitting in the tree.
树上卧着一只鸟。
〔辨析〕强调数量的概念，说明是一个而不是两个或三个。
〔例证〕
One million means a lot to me.
一百万对我来说是个大数目。
Plant one tree per hour.
每小时种一棵树。
一百万对我来说是个大数目。
Plant one tree per hour.
每小时种一棵树。
a 习惯用语
n.
- 从一地到另一地
from one place to another- For me a car is just a means of getting from A to B.
在我看来，汽车只不过是从一地到另一地的代步工具。
- For me a car is just a means of getting from A to B.
- 从头到尾；彻底地；完全
including everything there is to know about sth- He knew his subject from A to Z.
他通晓自己的学科。
- He knew his subject from A to Z.
from A to B
from A to Z
a 双语例句
- 1、
a waiter entered with a tray
侍者端着托盘进来了。 - 2、
Today you've got a new teacher taking you
今天有位新老师来教你们。 - 3、
I manage a hotel.
我经营一家旅馆。 - 4、
Bring a sleeping bag
带只睡袋。 - 5、
I was waiting for a bus.
我在等公共汽车。 - 6、
There was a terrible sadness in her eyes
她眼神中流露出深深的悲伤。 - 7、
He did have a real knowledge of the country
他对该国的确知之甚多。 - 8、
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。 - 9、
I spend a lot on expensive jewelry and clothing
我花很多钱购买昂贵的首饰和衣服。 - 10、
I've come looking for a bit of advice.
我特来讨教。 - 11、
Some parents believe a boy must learn to stand up and fight like a man.
有些父母认为男孩子必须学会像男子汉一样顶天立地，勇于抗争。 - 12、
The interview took place on a Friday afternoon
采访是在一个星期五的下午进行的。 - 13、
It was a Christmas when shoppers passed by expensive silks in favor of more practical gifts.
这是一个购物者不理会昂贵的丝绸衣服而热衷于更实用礼物的圣诞节。 - 14、
He was now a teacher and a respectable member of the community.
他现在是一位教师，并且是社区内受人尊敬的一员。 - 15、
The full address on a stick-on label was that of a Mrs P. R. Slater of Peterborough
不干胶标签上的完整地址写的是彼得伯勒的一位P.R.斯莱特太太。 - 16、
a Dr Matthew Owens was reported missing while on an expedition to north-eastern Turkey.
据报道，一位叫马修·欧文斯的博士在前往土耳其东北部考察的途中失踪了。 - 17、
When I listen to her play I can hear a new Nigel Kennedy.
从她的演奏中我听出了新一代的奈杰尔·肯尼迪。 - 18、
as far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。 - 19、
Most people have very little difficulty in seeing why a Van Gogh is a work of genius.
多数人不难理解为什么凡·高的作品是天才之作。 - 20、
It's not a question of some abstract concept.
这不是某个抽象概念的问题。 - 21、
a man had accosted me in the street.
一个男的在街上和我搭讪。 - 22、
I set off for a new adventure in the United States on the first day of the new year.
新年第一天，我在美国开始了一次新的冒险。 - 23、
This man is an animal, a beast
这人是个畜生，是个野兽。 - 24、
This is the end of a tour so I'm a little antsy, I guess.
旅途就此结束了，这让我有点坐立不安，我想是吧。 - 25、
I autographed a copy of one of my books.
我在自己的一本书上签了名。 - 26、
The research begs a number of questions.
研究绕过了一些问题。 - 27、
I had the beginnings of a headache
我有了头痛的先兆。 - 28、
I was in a market in Tangier and bingo! I found this.
当时我正在丹吉尔的一个市场里。瞧！我发现了这个。 - 29、
She's just given birth to a baby girl
她刚生了一个女孩。
a 英英释义
noun