a

^[2]  Would you like a drink?

你想喝點兒東西嗎？

A dog has four legs.

狗有四條腿。

He's a teacher.

他是教師。

------------------------------------

^[2]  She phones her mother three times a week.

她每星期給母親打三次電話。

This wine costs £4 a bottle.

這種葡萄酒4英鎊一瓶。

在讀音以a、e、i、o或u開始的字之前，用 an ,不用 a 。

重要的是發音，不是拼寫字母。

a box 一個盒子

a singer 一個歌唱者

a university 一所大學

an apple 一個蘋果

an hour 一個小時

an MP 一位議員

一輛汽車：a car

一輛公交車：a bus

一隻貓：a cat

一個玩具：a toy

一支鋼筆：a pen

一根香蕉：a banana

^[2] 

also an

indefinite article

【幫助説明】 The form a is used before consonant sounds and the form an before vowel sounds. When saying abbreviations like ‘FM’ or ‘UN’, use a or an according to how the first letter is said. For example, F is a consonant, but begins with the sound /e/ and so you say:

an FM radio.

U is a vowel but begins with /j/ and so you say:

a UN declaration.

a用於輔音前，an用於元音前。在FM、UN等縮略語前，用a還是an，需視首字母如何發音而定。如F是輔音字母，但其發音以 /e/ 開頭，故應説：an FM radio。U是元音字母，但其發音以 /j/ 音開頭，故應説：a UN declaration。

（用於可數名詞或單數名詞前，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

一個人；一匹馬；一個單位

an aunt/egg/hour/x-ray

一個姑母；一個雞蛋；一小時；一張X光片

I can only carry two at a time.

我一次只能帶兩個。

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) .

她是我父親的一位朋友。

（用於前有形容詞或後有短語的不可數名詞前）

used before uncountable nouns when these have an adjective in front of them, or phrase following them

a good knowledge of French

精通法語

a sadness that won't go away

揮之不去的悲愁

任何一；每一

any; every

A lion is a dangerous animal.

獅子是猛獸。

（表示為某一羣體或職業中的一員）

used to show that sb/sth is a member of a group or profession

Their new car's a BMW.

他們的新轎車是輛寶馬。

She's a Buddhist.

她是個佛教徒。

He's a teacher.

他是教師。

Is that a Monet (= a painting by Monet) ?

那是莫奈的畫嗎？

（用於視為一體的兩個名詞之前）

used in front of two nouns that are seen as a single unit

a knife and fork

一副刀叉

（用於某些數字前，代替one）

used instead of one before some numbers

A thousand people were there.

那裏有一千人。

（用於價格、數量、比率等）一，每一

used when talking about prices, quantities and rates

同義詞： per

They cost 50p a kilo.

其價錢是一公斤50便士。

I can type 50 words a minute.

我每分鐘能打50個單詞。

He was driving at 50 miles an hour.

當時他正以每小時50英里的速度駕車。

像（某人）的人；…式的人物

a person like sb

She's a little Hitler.

她是個小希特勒。

（用於某人姓名前，表示説話者不認識此人）有個

used before sb's name to show that the speaker does not know the person

There's a Mrs Green to see you.

有位格林太太要見你。

（用於一星期中某天的名稱前，表示具體某一天）

used before the names of days of the week to talk about one particular day

She died on a Tuesday.

她是在一個星期二去世的。

從一地到另一地

from one place to another

For me a car is just a means of getting from A to B.

在我看來，汽車只不過是從一地到另一地的代步工具。

從頭到尾；徹底地；完全

including everything there is to know about sth

He knew his subject from A to Z.

他通曉自己的學科。

a few 少數；幾個

a good few 相當多，不少，頗有 ^[3] 

a good many 相當多，很多 ^[4] 

a great many 許許多多，極多，為數極大

quite a few 很多；許多；相當多 ^[1]