如何区别该用不定冠词a还是an?

来源于未知   雪域流沙发布   2020-07-30 11:03更新  浏览

不定冠词a与an的区别

对于要使用到不定冠词的名词前,到底该用不定冠词a还是an,要看不定冠词后的单词发音的第一个音素是元音还是辅音。如:

an apple 一个苹果  

apple的发音是/ˈæpl/,第一个音素是/e/是元音,所以应该用 an apple

a pen 一支笔

pen的发音是/pen/,第一个音素是/p/是元音,所以应该用 a pen

一、辅音前用不定冠词a,如:

He is a bit of a coward.
他多少有几分怯懦。

The bread was as hard as a brick.
这面包硬得像块砖。

I got a friendly reception from them.
我受到他们友好的接待。

The only green thing was a lone pine tree.
绿色的东西只有孤零零的一棵松树。

A good driver varies the speed of his car according to the condition of roads.
优秀的司机会根据路况不同而改变车子的速度。

I want to buy a hat and a pair of boots, among other things.
除别的东西之外,我还想买顶帽子和一双皮靴。

His parents give him so much money that he’s got no motivation to get a job.
父母给了他很多钱,因此他根本就没有找工作的动力。

二、元音前用不定冠词an,如:

But everything has an opposite.
但一切都有相反的一面。

I have an American passport.
我有一份美国护照。

It was an old pine tree in the backyard.
这是后院里的一棵老松树。

He received an unfair treatment
他受到了不公平的待遇。

About this time an incident happened.
差不多就在这个时候,发生了一件事。

After an absence of seven years I went home.
外出7年后,我返回家乡。

Please write an abstract of this scientific article.
请写一份这篇科学论文的摘要。

I didn’t receive an acknowledgement of my application.
对我的申请,我还没收到回信。

Travel to the moon is not a dream but an actual happening.
登月旅行已不是梦想而是现实事情了。

三、易错辨析

hour, honest, honor等单词的拼写虽然以辅音字母h开头,但其读音却以元音开头,因此,前面要用an。反过来,有些单词虽然以元音字母开头,但其读音却以辅音开头,那么它们的前面应用a而不是an,这些词常见的有useful, university, usual, European, united, one-eyed, one-way等。

She comes from a European country.
她来自一个欧洲国家。

He is an honest businessman, according to what everyone says.
根据大家所说,他是位诚实的商人。

Write me a one-page summary of this report.
替我把这份报告写出一页纸的摘要。

A one per cent rise would be a disaster.
升高一个百分点将意味着一场灾难。

Father bought a used car from a car dealer.
父亲从汽车商那里买了一辆旧汽车。

He doesn’t fit (into) the traditional mold of a university professor.
他没有大学教授那种传统的气质。

另外,对于数字、字母以及由单词首字母构成的缩略词,其前到底是用a还是an,也需根据读音来确定,如:

He has an 11-year-old daughter.
他有一个11岁大的女儿。

Our daughter sent us an SOS for some more money.
我们的女儿给我们发来了再要点钱的求救信号。

 

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