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单词 a
释义  /eɪ/ determiner
1.(introducing person or thing for first time)(用于初次提及的单数可数名词前)一个

Today you've got a new teacher taking you.今天有一位新老师带你们。

2.(without specifying)(同类人或物中的任何)一个

Bring a sleeping bag.带个睡袋吧。

I was waiting for a bus.我在等公共汽车。

3.(with qualified uncount nouns)(用于由定语修饰的不可数名词前)一种

There was a terrible sadness in his eyes.他眼里有一种极度的悲伤。

4.(describing makes or types)(用于物质名词前, 表示种类或品牌)一种

Use a hard cheese, like Cheddar.用一种硬奶酪, 比如切达奶酪。

Roses grow best in a clay soil.玫瑰在黏质土壤中长得最好。

5.(with drinks)(用于表示饮料的不可数名词前)一杯

I'll have a coffee.我要喝一杯咖啡。

6.(indicating a type, group, class)(表示某人或某物所属的类型、群体、阶层等)一个

He's a bully.他是个恶霸。

It's ten years since the country became a democracy.该国成为民主国家已经十年了。

7.(indicating job, occupation)(表示某人的职业)一个

She's a doctor.她是个医生。

He works as a minicab driver.他是个小型出租车司机。

8.(in generalizations)(用于单数名词前, 泛指一类人或物)任何, 所有

An ostrich cannot fly.鸵鸟不能飞。

A child needs praise.孩子需要夸奖。

9.(with days, months, festivals)(用于日、月或节日前, 表示某个特定时间)

The interview took place on a Friday.面试是在周五进行的。

Did you have a good Christmas?你圣诞节过得好吗?

10.(describing paintings, sculpture)(用于艺术家的名字前, 表示其创作的画或雕像)一件…的作品

The drawing fetched a record price for a Michelangelo.这幅画创下了米开朗琪罗作品的售价纪录。

11.(one)(用于hundred、hour、meter等量词前或half、quarter、third等分数前)一

They travelled over a thousand miles.他们行程超过一千英里。

a quarter of an hour一刻钟

12.(expressing ratios, prices etc)(表示比例、价格等)一, 每
once a day每天一次

at a speed of 10 kilometres an hour以每小时10公里的速度

Carrots cost 70 pence a kilo.胡萝卜每公斤70便士。

13.(with nouns or determiners of quantity)(用于表示数量的名词或限定词前)

I spend a lot on expensive jewellery.我花很多钱买昂贵的珠宝。

I've come looking for a bit of advice.我来咨询点儿建议。

14.(with proper nouns)(用于专有名词前, 表示某人或某物具有某些特质)

He fancied himself as a bit of a Romeo.他自以为有点儿罗密欧的气质。

He didn't have the brain of an Einstein.他没有爱因斯坦那样的头脑。

15.(with name of unknown person)(用于不认识的人名字前)一个, 一位

There's a Mr Smith on the phone for you.有一位史密斯先生打电话找你。

16.(any at all)(在词组中与否定词连用)丝毫, 一点
not a hope毫无希望
not a chance绝不可能
 /eɪ/ aux. vb.
<非正式或方>=have

They'd a said if they'd known.他们要是知道就说了。

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更新时间:2025/8/24 23:25:33