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BNC: 5 COCA: 5

A

Related topics: Letters & punctuation
A1, a /eɪ/ noun (plural A’s, a’s)
1. [countableC, uncountableU]SLA the first letter of the English alphabet 英語字母表的第一個字母
2. [countableC, uncountableU] the sixth note in the musical scale of C major or the musical key based on this note A音〔C大調音階的第六音〕；A調
3  [countableC] the highest mark that a student can get in an examination or for a piece of work A級，甲級，甲等〔表示學業成績優秀〕
I got an A in French.
我的法語得了個A。
Julia got straight A’s (=all A’s) in high school.
朱莉娅讀中學時成績全部是A。
→ A level
4. an A student American EnglishAmE someone who regularly gets the best marks possible for their work in school or college 優等生
Examples from the Corpus
an A student• I was an A student, on my way to medical school.
5  [uncountableU] used to refer in a short way to one of two different things or people. You can call the second one B 甲，A〔兩個不同事物或人中的一個，另一個稱乙（B）〕
A demands £500, B offers £100.
甲方索要500英鎊，乙方願出100英鎊。
→ plan A at plan1(5)
6  from A to B from one place to another 從一地到另一地
get/go from A to B
Hiring a car was the best way to get from A to B.
租車是從一地到另一地的最好方法。
Examples from the Corpus
from A to B• An eagle looking down from above implies a threat whereas a heron flying from A to B suggests a more peaceable purpose.• First, good generalization from A to B can be readily explained in terms of mediation by the associate.• I, I showed him our product and I said we have to go from A to B with this project.• It doesn't have to be fancy - I just need a car to get me from A to B.• The wavelength of the light increases as it passes from A to B for two reasons.• The arrow will point from A to B in the functional dependency illustrated in the definition.• For at least fifteen hours a day they get us from A to B and take our body weight.
7  from A to Z describing, including, or knowing everything about a subject 從頭到尾〔表示描述、涵蓋或了解一個科目的全部内容〕
the history of art from A to Z
藝術通史
Examples from the Corpus
from A to Z• Hewanted his whole oeuvre to be seen from A to Z without any cuts.
8. A34, A40 etcA40 etc A34 the name of a road in Britain that is smaller than a motorway, but larger than a B-road A34（主幹）公路，A40（主幹）公路等〔英國公路名稱，介於高速公路和B級公路之間〕 → A-road
9. [uncountableU] a common type of blood A型〔一種常見血型〕
Examples from the Corpus
A• an A on the test• I was at a party, and a guy hit me on the head with an A & W Root Beer mug.• But inside, the A & P brimmed with unexpected abundance.• They were already passing the A & P on the way out of town.• The A & P grocery chain ran a laundry in Belleville for cleaning and repairing their employees' work clothes.
Related topics: Electricity
A2
TPEthe written abbreviation of amp or amps amp 或 amps 安培 的書面縮寫
a /ə; strong eɪ/ ●●● S1 W1 (also an) indefinite article , determiner → re, aka, her, of, or, er, o o, eh, are
1  XXused to show that you are talking about someone or something that has not been mentioned before, or that your listener does not know about 一，一個〔用於未曾提及或對方不知道的人或物的名稱前〕
We have a problem.
我們遇到了一個麻煩。
There was a hole in the fence.
籬笆上有一個洞。
Suddenly they heard a loud bang.
他們突然聽到砰的一聲巨響。
→ the1
2  XXused to show that you are referring to a general type of person or thing and not a specific person or thing 〔用於泛指一類人或一類事物〕
Would you like a sandwich?
來塊三明治好嗎？
I want to train to be an engineer.
我想經過培訓成爲一名工程師。
He’s a really nice man.
他真是個好人。
Take a look at this.
瞧瞧這個。
It needs a good clean.
這得好好清洗一下。
3  XXused before someone’s family name to show that they belong to that family 〔用於某人的姓氏前表明其屬於這個家庭〕
One of his daughters had married a Rothschild.
他有個女兒嫁給了羅斯柴爾德家的人。
4  XXone 一（個）
a thousand pounds
一千英鎊
a dozen eggs
一打雞蛋
You’ll have to wait an hour or two.
你得等一兩個小時。
5  XXused in some phrases that say how much of something there is 〔用於某些表示數量的短語〕
There were a lot of people at the party.
許多人參加了聚會。
A few weeks from now I’ll be in Venice.
再過幾個禮拜我就在威尼斯了。
You have caused a great deal of trouble.
你惹出了很多麻煩。
6  XXused to mean ‘each’ when stating prices, rates, or speeds 每一（個）〔用於表明價格、費用或速度〕
I get paid once a month.
我的工資一個月發一次。
The eggs cost $2 a dozen.
雞蛋兩美元一打。
7  XXused before singular nouns to mean all things of a particular type 任一，每一〔用於單數名詞前表示某一類的全部〕
A square has four sides (=all squares have four sides).
正方形有四條邊。
A child needs love and affection.
孩子需要愛和關懷。
8  XXused once before two nouns that are mentioned together very often 〔用於兩個經常同時提及的名詞前〕
I’ll fetch you a cup and saucer.
我去給你拿一副杯碟來。
Does everyone have a knife and fork?
每個人都有刀叉了嗎？
9  XXused before the -ing forms of verbs when they are used as nouns referring to an action, event, or sound 〔用於表示動作、事件或聲音的動詞-ing形式之前〕
There was a beating of wings overhead.
頭頂上傳來翅膀的拍打聲。
Bernice became aware of a humming that seemed to come from all around her.
伯尼斯意識到似乎從四方八面傳來嗡嗡聲。
10  XXused before nouns that are usually uncountable when other information about the quality, feeling etc is added by an adjective, phrase, or clause 〔用於有形容詞、短語或從句修飾的不可數名詞前〕
Candidates must have a good knowledge of chemistry.
求職者必須精通化學。
11  XXused before the name of a substance, food etc to refer to a particular type of it 〔用於物質、食品等名稱前表示某一類〕
Use a good cheese to make the sauce.
要用優質的奶酪來做調味醬。
plants that grow well in a moist soil
在濕潤的土壤中生長良好的植物
12  used before the name of a drink to refer to a cup or glass of that drink 一杯〔用於飲料名稱前〕
Can I get you a coffee?
我給你倒杯咖啡好嗎？
Renwick went to the bar and ordered a beer.
倫威克走到吧台前點了杯啤酒。
13  XXused before the name of a famous artist to refer to a painting by that artist 一幅…的作品〔用於著名畫家的姓名前〕
an early Rembrandt
倫勃朗的一幅早期作品
14  XXused before a name to mean someone or something that has the same qualities as that person or thing 〔用於某人或某物的名字前指與其具有同樣特性的人或物〕
She was hailed as a new Marilyn Monroe.
她被譽爲瑪麗蓮·夢露再世。
15  XXused before someone’s name when you do not know who they are 某一，一位〔用於陌生人的姓名前〕
There is a Mr Tom Wilkins on the phone.
有位湯姆·威爾金斯先生打電話來。
16  XXused before the names of days, months, seasons, and events in the year to refer to a particular one 〔用於某一年的日、月、季節和事件前，指具體的日子或事件〕
We arrived in England on a cold wet Sunday in 1963.
1963年一個寒冷、下着雨的星期天，我們來到了英格蘭。
I can’t remember a Christmas like it.
我的記憶中不曾有過像這樣的聖誕節。
 USAGE: A, an
Before a word beginning with a vowel sound, use an: 讀音以元音開頭的單詞前用an
an elephant
一頭大象
an umbrella
一把傘
an obvious mistake
一個明顯的錯誤
Use an before an 'h' that is not pronounced: 不發音的h前用an
an hour later
一小時之後
an honest explanation
如實的解釋
Use a before a 'u' that is pronounced like 'you': u發you音時前面用a
a university
一所大學
a unique opportunity
一個千載難逢的機會
Use an before an abbreviation that is pronounced with a vowel sound at the start: 讀音以元音開頭的縮寫前用 an
an SOS call
一個緊急求救電話
an MP3 file
一個MP3文件
Examples from the Corpus
a lot• "How does your arm feel?" "It still hurts a lot."• If you plan carefully, a trip to Europe doesn't have to cost a lot.• It's nice to meet you. Wendy's talked about you a lot.• She goes abroad on business quite a lot.• An awful lot of his customers are unhappy with his work.• I'm really glad to meet you. Betty's talked a lot about you.• He laughed quite a lot as he spoke.• I like her a lot, but I don't think I'm in love with her.• I used to walk a lot, but I've been very lazy recently.• I like the people a whole lot, but the pay isn't very good.• He really sweats a lot in hot weather like this.• Ask Susan - she knows a lot more about computers than I do.• The tickets were a lot more expensive than we expected.• I'm sure she has a lot more problems than I have.• John has lived in a lot of different places.• All the same, it is a lot of fun, and the warm weather is very pleasant.• Stevie Wonder is a black artist, but a lot of his music comes out pop.• I went out with quite a lot of men before I met Stuart.• The Big Three are making a lot of noise in hopes of gaining a political and competitive advantage.• As with most coupes there is not a lot of room in the back, even kids find it tight.• But that is true of a lot of subjects I did at O level.• A lot of tourists visit Venice in the summer.• The book contains a lot of useful advice about setting up your own business.• Helen looks as if she's lost quite a lot of weight recently - is she on a diet?• He knows a lot of weird people over in Nam.• She's changed a lot since she's been here.• I was surprised so few people were at the concert - I thought there'd be a lot there.
a-1 /ə/ prefix
1  XXin a particular condition or way 處於某種狀況；以某種方式
aloud
大聲地
alive (=living)
活（着）的
with nerves all a-tingle (=tingling)
全身神經刺痛
2  old use in, to, at, or on something 在…内[上]；往…
abed (=in bed)
在床上
afar (=far away)
在遠處
Examples from the Corpus
a-• atop
a-2 /eɪ, æ, ə/ prefix
XXnot or without 與…相反；缺乏；不；沒有
amoral (=not moral)
不道德的
atypically (=not typically)
非典型地
A* /ˌeɪ ˈstɑː $ -ˈstɑːr/ noun [countableC, uncountableU]
the highest mark that a student can get in a GCSE examination A星級〔普通中等教育證書考試的最高得分等級〕
A1 nounA2a indefinite article
→10-16

→USAGE1a-1 prefixa-2 prefixA* noun
Corpus

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