简明英汉词典

a
[ei]
art.
n.
字母A

基本词义

A
abbr.

(1)

安 (ampere)

(2)

As 或 A's

美国传统词典[双解]

a
a 1或 A
AHD:[3]
D.J.[ei]
K.K.[e]
n.(名词)
【复数】 a's或 A's

(1)

The first letter of the modern English alphabet.
A字母:现代英语字母表中第一个字母

(2)

Any of the speech sounds represented by the letter a.
A的发音:a 所表示的读音

(3)

The first in a series.
序列中的第一

(4)

The best or highest in quality or rank:
甲等,甲级:在质量、等级上最好或最高:
grade A milk.
优质牛奶

(5)

Something shaped like the letter A.
A字形:形状象字母A的物体

(6)

Music
【音乐】

(7)

The sixth tone in the scale of C major or the first tone in the relative minor scale.
A音或A调:C大调音阶中的第六个音或C小调音阶中的第一个音

(8)

A key or scale in which A is the tonic.
A调音阶:以A调为主音调的音键或音阶

(9)

A written or printed note representing this tone.
A调的音符:代表A调的手写体或印刷体的音符

(10)

A string, key, or pipe tuned to the pitch of this tone.
发A调的乐器:调至A调音高的弦乐器、琴键或管乐器

(11)

A One of four types of blood in the ABO system.
A A型血:ABO系统中四种血型的一种

基本词义

a
a 2
AHD:[] [3 ] 重读时
D.J.[*][ei ]重读时
K.K.[*][e ]重读时
indef.art.(不定冠词)

(1)

Used before nouns and noun phrases that denote a single but unspecified person or thing:
非特指的一个:用在名词或名词短语前,表示单数及不确定的人或物:
a region; a person.
一个地区,一个人

(2)

Used before terms, such as few or many, that denote number, amount, quantity, or degree:
用在如few 或 many 之前,表示总和、总数、数量或程度:
only a few of the voters; a bit more rest; a little excited.
只有少许投票者;稍微多休息会儿;有些激动

(3)

Used before a proper name to denote a type or a member of a class:
用在一专有名称前来表示一类中的一种或一员:
the wisdom of a Socrates.
苏格拉底式的智慧

(4)

Used before a mass noun to indicate a single type or example:
用于物质名词前表示单一种类或事例:
a dry wine.
无甜味葡萄酒

(5)

The same:
同样,同类:
birds of a feather.
同一种类的鸟

(6)

Any:
任何一个:
not a drop to drink.
滴水未沾

语源

(1)

Middle English
中古英语

(2)

variant of an [an] * see an 1
an的变体 [不定冠词an] *参见 an1

用法
In modern written English, the form a is used before a word beginning with a consonant sound, however it may be spelled (a frog, a university, a euphemism ). The form an is used before a word beginning with a vowel sound ( an orange, an hour ). At one time, an was an acceptable alternative before words beginning with a consonant sound but spelled with a vowel ( an one, an united appeal ), but this usage is now entirely obsolete. · An was also once a common variant before words beginning with h in which the first syllable was unstressed; thus 18th-century authors wrote either a historical or an historical but a history, not an history. This usage had a phonetic justification inasmuch as the initial h in words such as historical and heroic was often dropped, a practice that was largely abandoned by the late 19th century in educated speech. By 1926 H.W. Fowler could regard the continued use of an before such words as pedantic. Nowadays it survives primarily before the word historical; one rarely encounters a reference to an hysterectomy or an hereditary trait. The use of a phrase like an historic opportunity is a harmless adornment in formal writing.
在现代书面英语中a 的形式用于以辅音开头的单词前, 但这个词可能被拼成(a frog,a university,a euphemism )。 an 的形式用于以元音开头的词前( an orange,an hour )。 有一度an 用于以辅音开头但拼写形式为元音的单词前的形式也被认可( an one,an united appeal ), 但这种用法现在已被废弃了。An 曾是用于第一个音节不重读,且以 h 为开头的单词前的一种常见变体形式; 所以18世纪的作家既可用a historical 也可用 an historical, 但不可用 a history 也不可用 an history。 当h 在这样一些单词,如 historical 和 heroic 中作为起首字母而又不发音时,这种用法在语音学上是合理的。 这种用法在19世纪末的高雅用语中已基本废弃了。1926年时H·W·福勒还认为an 继续在这些单词前使用太具学究气了。 现在这种用法主要在historical 前时还保存使用; 在an hysterectomy 或 an hereditary trait 之前则极为少见。 在正式的书面语中,象an historic opportunity 这种用法也不失为一种装饰

基本词义

a
a 3
AHD:[]
D.J.[*]
K.K.[*]
prep.(介词)
In every; to each; per:
单一;每一;每:
once a month; one dollar a pound.
每月一次;一磅一美元

语源

(1)

Middle English
中古英语

(2)

from Old English an [in] * see on
源自 古英语 an [在…里] *参见 on

基本词义

a
a 4
AHD:[]
D.J.[*]
K.K.[*]
v.aux.Informal (助动词)【非正式用语】
Have:
相当于助动词have:
He'd a come if he could.
如果他能来的话,他早就来了

语源

(1)

Middle English
中古英语

(2)

alteration of haven [to have] * see have
haven的变化 [有] *参见 have

基本词义

a
a 5
abbr.(略语)

(1)

Also a. Absent.
也作 a. Absent.

(2)

Physics Acceleration.
【物理学】 Acceleration.

(3)

Also a. Are [measurement]
也作 a. Are[测量]

基本词义

A
A 或 A.
abbr.(略语)

(1)

Also a. or A. Acre.
也作 a. 或 A. Acre.

(2)

Ammeter.
Ammeter.

(3)

Ampere.
Ampere.

(4)

Or ? Angstrom.
或 ? Angstrom.

(5)

Also a. or A. Area.
也作 a. 或 A. Area.

现代英汉词典

a 1
[E, eI]
indefinite art.

(1)

(用在以元音开始的词前为 an [An])

(2)

a pen
一枝笔
a car
一辆汽车
a dollar
一美元
a dozen pens
一打笔
an egg
一个鸡蛋
Can I have a tea and two coffees.
请给我一杯茶和两杯咖啡。

(3)

(一类事物中的)任何一个
not a one
没有一个
Let's go to a Chinese restaurant.
我们去一家中餐餐馆。
We saw a good film on TV last night.
昨天晚上我们在电视中看到了一个好片子。

(4)

任何
A square has four sides.
正方形有四条边。
A dog is an animal.
狗是动物。

基本词义

a 2
prep.
每一
twice a day
每日两次
three pounds a week
每周3英镑
two dollars a dozen
每打两元
ninety kilometers an hour
每小时90公里

习惯用语

from A to Z
从头至尾;彻底地,完全地

基本词义

A 1
[eI]
n.
As 或 A's

(1)

英语字母表的第1个字母 (亦作 a)

(2)

〈音〉C大调的第6音,A音

(3)

〈音〉A调

(4)

甲,第一

(5)

〈数〉第一个未知数 (= a)

基本词义

A 2
[eI]
abbr.

(1)

安 (ampere)

(2)

答案 (answer)

基本词义

A 3
[eI]
abbr.
(BrE.)
A级影片(十四岁以下儿童不宜观看)

现代英汉综合大辞典

a

(1)

=about;

(2)

absolute;

(3)

acre;

(4)

active;

(5)

adjective;

(6)

after;

(7)

anonymous;

(8)

anno([拉]=in the year of);

(9)

ante([拉]=before)

基本词义

A
a与e的连写形式(源自拉丁语和拉丁化的希腊语, 现多简化为e、ae, 如 encyclopAdia 可拼作 encyclopaedia 或encyclopedia

[七国语言]英汉地质大词典

a
a, 年

美国传统词典

a
a 1or A
AHD:[3]
D.J.[ei]
K.K.[e]
n.
pl. a'sor A's

(1)

The first letter of the modern English alphabet.

(2)

Any of the speech sounds represented by the letter a.

(3)

The first in a series.

(4)

The best or highest in quality or rank:
grade A milk.

(5)

Something shaped like the letter A.

(6)

Music

(7)

The sixth tone in the scale of C major or the first tone in the relative minor scale.

(8)

A key or scale in which A is the tonic.

(9)

A written or printed note representing this tone.

(10)

A string, key, or pipe tuned to the pitch of this tone.

(11)

A One of four types of blood in the ABO system.

基本词义

a
a 2
AHD:[] [3 ] when stressed
D.J.[*][ei ]when stressed
K.K.[*][e ]when stressed
indef.art.

(1)

Used before nouns and noun phrases that denote a single but unspecified person or thing:
a region; a person.

(2)

Used before terms, such as few or many, that denote number, amount, quantity, or degree:
only a few of the voters; a bit more rest; a little excited.

(3)

Used before a proper name to denote a type or a member of a class:
the wisdom of a Socrates.

(4)

Used before a mass noun to indicate a single type or example:
a dry wine.

(5)

The same:
birds of a feather.

(6)

Any:
not a drop to drink.

语源

(1)

Middle English

(2)

variant of an [an] * see an 1

用法
In modern written English, the form a is used before a word beginning with a consonant sound, however it may be spelled (a frog, a university, a euphemism ). The form an is used before a word beginning with a vowel sound ( an orange, an hour ). At one time, an was an acceptable alternative before words beginning with a consonant sound but spelled with a vowel ( an one, an united appeal ), but this usage is now entirely obsolete. · An was also once a common variant before words beginning with h in which the first syllable was unstressed; thus 18th-century authors wrote either a historical or an historical but a history, not an history. This usage had a phonetic justification inasmuch as the initial h in words such as historical and heroic was often dropped, a practice that was largely abandoned by the late 19th century in educated speech. By 1926 H.W. Fowler could regard the continued use of an before such words as pedantic. Nowadays it survives primarily before the word historical; one rarely encounters a reference to an hysterectomy or an hereditary trait. The use of a phrase like an historic opportunity is a harmless adornment in formal writing.

基本词义

a
a 3
AHD:[]
D.J.[*]
K.K.[*]
prep.
In every; to each; per:
once a month; one dollar a pound.

语源

(1)

Middle English

(2)

from Old English an [in] * see on

基本词义

a
a 4
AHD:[]
D.J.[*]
K.K.[*]
v.aux.Informal
Have:
He'd a come if he could.

语源

(1)

Middle English

(2)

alteration of haven [to have] * see have

基本词义

a
a 5
abbr.

(1)

Also a. Absent.

(2)

Physics Acceleration.

(3)

Also a. Are [measurement]

基本词义

A
A or A.
abbr.

(1)

Also a. or A. Acre.

(2)

Ammeter.

(3)

Ampere.

(4)

Or ? Angstrom.

(5)

Also a. or A. Area.

英汉船舶大词典

a
n.非

基本词义

a
n.非

朗文英汉综合电脑词典

A
= Ampere,【电】安培; = Angstrom, 埃(=0.0000000001米)

航空英语缩写词典

A
Aero 航空的,飞行的,空中的

基本词义

A
Areas 地区,区域

基本词义

A
Aear 区域

基本词义

A
Air 空气

基本词义

A
Alternalte 备用的

基本词义

A
Amber 琥珀色

基本词义

A
Ampere 安培

基本词义

A
Amber 琥珀色

基本词义

A
Ampere 安培

基本词义

A
Angstrom 埃(波长)

基本词义

A
Annual 年度

基本词义

A
Approach lighting 进近灯

基本词义

A
Arrive, Arrival 到达

基本词义

A
Ampere (s) 安培

英汉心理学大词典

A
型性格

基本词义

A
S

基本词义

A
type

基本词义

A
chromosome:A

基本词义

A
BX

基本词义

A
BX

基本词义

A
S

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