英语中a和an的用法?a和an的用法:1、a用在以辅音字母开头,或以读做辅音的元音字母开头的单词前面:例如:a man 一个男人,a university 一所大学,a hat一顶帽子 2、an用在以元音字母(a,e,i,o,u)开头,或以不发音的h字母开头的单词前面:例如:an apple 一个苹果,an island 一个岛,那么,英语中a和an的用法?一起来了解一下吧。
an和a的区别具体如下:
一、音标区别
1、当后面接的单词的音标是以原音开头的话就用an。
2、当后面接的单词的音标不以原音开头的话就用a。
二、单词区别
1、以a 、e、 i、 o开头的单词前面都是要用an的。
2、不以a 、e 、i 、o开头的单词前面都是要用a的。
三、语境不同
1、an 指初次提及或非特指的人或物。
2、a 用于可数名词或单数名词前。
a和an的用法上注意哪些?
1、拼写以辅音字母开头读音却以元音开头的单词。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。
2、拼写以元音字母开头读音却以辅音开头的单词。useful, university, usual, united, European, one-eyed, one-way等单词的拼写虽然以元音字母开头,但其读音却以元音开头,因此,前面要用a。
3、在26个英文字母中,a, e, i, o, f, h, l, m, n, r, s, x这12个字母的读音是以元音开头的,其余字母的读音则是以辅音开头的。

a和an用在可数名词单数的前面。a修饰的是以辅音音素开头的单词,an则是元音,注意是以音标来判断的。
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不定冠词最基本的用途就是用来表示“一”这概念,如: ① A stitch in time saves nine. ② Jason is an internationally known scholar. 此外,a/an 还有下列 6 种用途: 一常和time、measurement等有关的名词连用,以表示“每—” 的概念,如: ③ I teach five days a week. ④ This type of vegetables is sold at one dollar a kilo. ⑤ My car usually runs sixty kilometres an hour. 二常和 hundred, thousand, dozen 以及数目及数量连用,如: ⑥ That factory turns out at least a hundred tyres a day. ⑦ Noel's monthly salary is a thousand dollars. ⑧ I have a number of sponsored students. ⑨ Mary has a lot of money. 三在“of / at”后面出现,以表示“同一类”这概念,如: ⑩ Birds of a feather flock together. 11. Please come one at a time. 12. Things of a kind come together, so do people of a mind. 四常在“rather, quite, many, half, what, such”等字后面出现,形成固定用法,如: 13. Tom is rather a fool. 14. I think Chinese is quite a useful language. 15. Many a student has asked that question. 16. The visitor left half an hour ago. 17. What a fine day it is! 18. How can you say such a thing? 五用在“so, as, too, how +形容词”这些结构里,如: 19. We have not had so hot a day before. 20. Susan is as clever a girl as Anna. 21. That is too difficult a book for beginners. 22. No one knew how serious a problem it was until later. 六出现在许多惯用语中,如: 23. Bob always has a bone to pick with others. 24. Some students turned a deaf ear to the teacher's advice. 25. All must learn a language with an eye to mastering it. 26. I hope you will make an effort to attend the meeting punctually. 27. Jason has an aversion to being idle. 28. The news of Jack's sudden resignation came as a bolt from the blue.不定冠词最基本的用途就是用来表示“一”这概念,如: ① A stitch in time saves nine. ② Jason is an internationally known scholar. 此外,a/an 还有下列 6 种用途: 一常和time、measurement等有关的名词连用,以表示“每—” 的概念,如: ③ I teach five days a week. ④ This type of vegetables is sold at one dollar a kilo. ⑤ My car usually runs sixty kilometres an hour. 二常和 hundred, thousand, dozen 以及数目及数量连用,如: ⑥ That factory turns out at least a hundred tyres a day. ⑦ Noel's monthly salary is a thousand dollars. ⑧ I have a number of sponsored students. ⑨ Mary has a lot of money. 三在“of / at”后面出现,以表示“同一类”这概念,如: ⑩ Birds of a feather flock together. 11. Please come one at a time. 12. Things of a kind come together, so do people of a mind. 四常在“rather, quite, many, half, what, such”等字后面出现,形成固定用法,如: 13. Tom is rather a fool. 14. I think Chinese is quite a useful language. 15. Many a student has asked that question. 16. The visitor left half an hour ago. 17. What a fine day it is! 18. How can you say such a thing? 五用在“so, as, too, how +形容词”这些结构里,如: 19. We have not had so hot a day before. 20. Susan is as clever a girl as Anna. 21. That is too difficult a book for beginners. 22. No one knew how serious a problem it was until later. 六出现在许多惯用语中,如: 23. Bob always has a bone to pick with others. 24. Some students turned a deaf ear to the teacher's advice. 25. All must learn a language with an eye to mastering it. 26. I hope you will make an effort to attend the meeting punctually. 27. Jason has an aversion to being idle. 28. The news of Jack's sudden resignation came as a bolt from the blue.
a和an的用法:
1、a用在以辅音字母开头,或以读做辅音的元音字母开头的单词前面:
例如:a man 一个男人,a university 一所大学,a hat一顶帽子
2、an用在以元音字母(a,e,i,o,u)开头,或以不发音的h字母开头的单词前面:
例如:an apple 一个苹果,an island 一个岛,an uncle 一位大叔
3、an还用在发音以元音开头的单个字母前面:
例如:an L-plate 一块“实习驾驶”车牌,an MP 一个国会议员,an SOS 一个呼救信号
4、a/an没有性的变化:
例如:a man一个男人,a woman一个女人,an actor一个男演员,an actress 一个女演员
扩展资料:
a英[ə; eɪ]美[ə; e]
art. 一;任一;每一
短语
1、a cappella无伴奏合唱 ; 阿卡贝拉 ; 走在大街的女子 ; 无伴奏
2、A little一点 ; 一些 ; 一点儿 ; 一点点
3、Bisphenol A双酚A ; 酚甲烷 ; 丙二酚
例句:
Asadoctor,how doyoudo that?
作为一个医生你怎么能那样做?。

a用在以辅音字母开头,或以读做辅音的元音字母开头的单词前面:
a man一个男人
a university一所大学
a hat一顶帽子
a European一个欧洲人
a one-way street一条单行马路
an用在以元音字母(a,e,i,o,u)开头,或以不发音的h字母开头的单词前面:
an apple一个苹果
an island一个岛
an uncle一位大叔
an onion一个洋葱
an egg一个鸡蛋
an hour一小时
an还用在发音以元音开头的单个字母前面:
an L-plate一块“实习驾驶”车牌
an MP一个国会议员
an SOS一个呼救信号
an‘x’一个x字母、X形的东西或未知数
a/an没有性的变化:
a man一个男人
a woman一个女人
an actor一个男演员
an actress一个女演员
a table一张桌子
a/an不用在以下几种情况下:
A 复数名词之前:
a/an没有复数形式,所以a dog的复数是dogs,an egg的复数是eggs。
B 不可数名词之前(参见第13节):
C 三餐名称之前,但这些名称前加形容词时除外:
We have breakfast at eight.
我们8点钟吃早饭。

以上就是英语中a和an的用法的全部内容,一、a和an是不定冠词用法:1.通常来说,a是用在以辅音开首的词前面,an是用在以元音开首的词前面。2.可数名词前面用 a(或 an),不可数名词前面不可用a(或 an),如可以说 a healthy boy,却不可以说 a health。3.在特定情况下。