A1 Nouns & Articles 4 min read 简单

不定冠词：A 与 AN 的区别

Choose 'a' or 'an' based on the very first sound you hear, not the letter you see.
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Grammar Rule in 30 Seconds

Use 'a' before consonant sounds and 'an' before vowel sounds to talk about one non-specific person or thing.

  • Use 'a' before words starting with a consonant sound: 'a cat', 'a dog'.
  • Use 'an' before words starting with a vowel sound: 'an apple', 'an egg'.
  • Focus on the sound, not the letter: 'an hour' (silent H) or 'a university' (Y sound).
A + 🔤 (Consonant Sound) | AN + 🍎 (Vowel Sound)

Overview

### Overview
大家好！今天我们要学习英语里一个非常基础但又非常重要的部分：不定冠词 a 和 an。你可以把它们想象成英文里表示“一个”的词。虽然中文里我们说“一本书”、“一个苹果”，但英语里什么时候用 a，什么时候用 an，是有讲究的。这就像我们在淘宝上买东西，虽然都是“买一件”，但有时候需要注意一下细节。掌握好 a 和 an 的用法，是让你的英语听起来更地道、更自然的第一步。别担心，它们没有你想的那么难，我们一步一步来！
### How This Grammar Works
首先，我们来理解一下 a 和 an 的基本作用。它们有两个核心功能：
  1. 1表示“一个”：它们都用来修饰单数的、可数的名词。什么是“可数名词”呢？就是你可以数出来的东西，比如 book（书，一本、两本书）、chair（椅子，一把、两把）、idea（想法，一个想法、两个想法）。像 water（水）、information（信息）这种是“不可数名词”，你就不能说 a water 或者 an information。
  2. 2表示“不特定的”：当你用 a 或 an 时，你指的不是某个特定的、你们俩都知道的东西，而是泛指“任何一个”或者“某一个”。比如，你说 I want a book（我想要一本书），意思就是我想要随便哪一本，不是指某本你已经知道的书。这和用 the（定冠词）是不同的，the 用来指代特定的、双方都知道的东西。
那么，什么时候用 a，什么时候用 an 呢？这其实很简单，关键看后面紧跟着的那个单词的“发音”，而不是看它写的是什么字母！这就像我们在微信里聊天，有时候为了让语气更顺畅，会加一些语气词，an 就像是给发音加了一个小小的“润滑剂”。
英语里，两个元音（a, e, i, o, u）发音如果靠得太近，听起来会有点别扭。为了让发音更顺滑，当一个单词以元音发音开头时，我们就在它前面加 an。如果以辅音发音开头，就加 a。
核心口诀：
* 辅音音前面用 a。
* 元音音前面用 an。
记住，是音，不是字母！这一点非常重要。
### Formation Pattern
我们来具体看看怎么用。选择 a 还是 an，完全取决于紧跟在它后面的那个单词的第一个声音。这个单词可能是名词本身，也可能是修饰名词的形容词。
1. 用 a 的情况：
当后面单词的第一个声音是辅音时，我们用 a。
* 以辅音字母开头，发辅音音： 这是最常见的情况。
* a book (book 以 /b/ 开头，是辅音音)
* a car (car 以 /k/ 开头，是辅音音)
* a dog (dog 以 /d/ 开头，是辅音音)
* a friend (friend 以 /f/ 开头，是辅音音)
* a table (table 以 /t/ 开头，是辅音音)
* 以元音字母开头，但发辅音音： 有些单词虽然写着以元音字母开头（a, e, i, o, u），但实际发音却是以辅音音开头的。这种情况，我们也要用 a。
* a university (university 的发音是 /juː/, 第一个音是 /j/，像 'y' 的音，是辅音音)
* a uniform (uniform 的发音是 /juːnɪfərm/, 第一个音是 /j/，是辅音音)
* a European country (European 的发音是 /jʊərəˈpiːən/, 第一个音是 /j/，是辅音音)
* a one-dollar coin (one 的发音是 /wʌn/, 第一个音是 /w/，像 'w' 的音，是辅音音)
关键点： 看到 u 或 eu 开头的单词，如果发的是“you”的音 (/juː/)，就要用 a。看到 o 开头的单词，如果发的是“wo”的音 (/wʌn/)，也要用 a。
2. 用 an 的情况：
当后面单词的第一个声音是元音时，我们用 an。
* 以元音字母开头，发元音音： 这是最常见的情况。
* an apple (apple 以 /æ/ 开头，是元音音)
* an egg (egg 以 /ɛ/ 开头，是元音音)
* an idea (idea 以 /aɪ/ 开头，是元音音)
* an orange (orange 以 /ɒ/ 开头，是元音音)
* an umbrella (umbrella 以 /ʌ/ 开头，是元音音)
* 以辅音字母开头，但那个辅音字母不发音（通常是'h'不发音），使得单词以元音音开头： 这种情况需要特别注意。
* an hour (hour 里的 'h' 不发音，实际发音是 /aʊər/, 第一个音是 /aʊ/，是元音音)
* an honest person (honest 里的 'h' 不发音，实际发音是 /ˈɒnɪst/, 第一个音是 /ɒ/，是元音音)
* an honor (honor 里的 'h' 不发音)
* 以首字母缩写开头，而这个首字母的发音是以元音音开头的： 这种情况在大学、工作中比较常见。
* an MBA (MBA 的发音是 /em biː eɪ/, 第一个字母 'M' 的发音是 /em/，以元音 /ɛ/ 开头)
* an FBI agent (FBI 的发音是 /ef biː aɪ/, 第一个字母 'F' 的发音是 /ɛf/，以元音 /ɛ/ 开头)
* an SOS signal (SOS 的发音是 /es əʊ es/, 第一个字母 'S' 的发音是 /ɛs/，以元音 /ɛ/ 开头)
关键点： 看到以 'h' 开头的单词，要想想这个 'h' 是不是不发音（比如 hour, honest）。看到首字母缩写，要读出它的发音，看第一个音是元音还是辅音。
一个例子来巩固：
* a big apple (因为 big 以辅音 /b/ 开头)
* an enormous apple (因为 enormous 以元音 /ɪ/ 开头)
你看到没？冠词的选择是看它紧挨着的那个词的第一个声音，和后面隔了多少个词没关系。
### Gender & Agreement
这一点对我们中文母语者来说是个好消息！英语的 a 和 an 和名词的性别完全没有关系。不像有些语言（比如法语、西班牙语），名词有阳性、阴性之分，冠词也得跟着变。在英语里，man（男人）是阳性，woman（女人）是阴性，apple（苹果）是中性，但它们前面用什么冠词，只看发音：
* a man (man 以 /m/ 辅音音开头)
* a woman (woman 以 /w/ 辅音音开头)
* an actor (actor 以 /æ/ 元音音开头)
* an actress (actress 以 /æ/ 元音音开头)
你看，无论男女，只要后面是辅音音就用 a，是元音音就用 an。这大大简化了我们的学习，不用去记每个名词的“性别”了，只需要关注发音规则。
### When To Use It
什么时候我们应该用 a 或 an 呢？主要有以下几种情况：
1. 第一次提到一个单数、可数名词时：
当我们第一次在一个对话或一段文字里提到某个东西，并且这个东西是单数、可数的，而且不是特指某一个，我们就用 a 或 an 来介绍它。这就像我们在朋友圈发一张照片，第一次展示给大家看。
* I bought a new phone yesterday. （我昨天买了一部新手机。—— 这是第一次提到这部手机，它不是某个大家都知道的特定手机。）
* She is reading an interesting book. （她在读一本有趣的书。—— 泛指一本，不是某本特定的书。）
* There is a cat on the roof. （屋顶上有一只猫。—— 告诉你有一个猫在那里，但不是指某只你认识的猫。）
重要提示： 一旦这个东西被提到了，后面再提到它，通常就要用 the 来指代那个特定的东西了。比如：I bought a new phone yesterday. The phone is very fast. （我昨天买了一部新手机。这部手机速度很快。）
2. 用于说明职业、类别或身份：
当我们说某人是做什么的，或者某物属于哪一类时，会用到 a 或 an。
* He is a doctor. （他是一名医生。—— 说明他的职业。）
* That’s an excellent idea! （那真是个绝妙的主意！—— 说明主意的类别或质量。）
* A dog is a mammal. （狗是哺乳动物。—— 说明狗的类别。）
* This is a kind of fruit. （这是一种水果。—— 说明属于哪一类。）
3. 表示“任何一个”或“每一类中的一个”：
当你想表达“随便哪一个都行”或者“属于某一类”的意思时，也用 a 或 an。
* Could you give me a pen? （你能给我一支笔吗？—— 随便哪支笔都行。）
* I need an answer soon. （我需要尽快得到一个答案。—— 任何一个答案都可以。）
* She ate a slice of pizza. （她吃了一片披萨。—— 泛指一片。）
4. 用于一些表示数量、频率和速率的固定表达：
有些短语是固定搭配，就像我们说“外卖”一样，是习惯用法，需要记住。
* 数量：
* a few (一些，用于可数名词) - I have a few friends here.
* a little (一点，用于不可数名词) - I have a little money.
* a couple of (两个，或少数) - I need a couple of minutes.
* 频率：
* once a day (一天一次)
* twice a week (一周两次)
* three times a month (一个月三次)
* an hour (每小时，比如 The bus comes once an hour.) - 注意这里是 an hour，因为 hour 的 'h' 不发音。
* 速率/价格（表示“每”）：
* fifty miles an hour (每小时五十英里)
* ten dollars a pound (每磅十美元)
* $5 a day (每天5美元)
5. 在以 What 开头的感叹句中：
用来表达惊讶或赞叹时，What 后面会跟 a 或 an，然后是形容词和名词。
* What a beautiful day! （多么美好的一天！）
* What an interesting movie! （多么有趣的电影啊！）
* What a surprise! （多么大的惊喜！）
### Common Mistakes
对于我们中文母语者来说，在使用 a 和 an 时，有几个特别容易犯的错误，主要是因为我们中文里没有冠词，而且对发音的敏感度可能不如英语母语者。
错误 1：不加冠词，或者加错冠词。
* 中文思维干扰： 中文里说“我有一个苹果”，直接说“我有一个苹果”就行，不需要加额外的词。所以，说英语时，很容易就直接说 I have apple. 或者 I have an apple.。但如果说“我有一个苹果”，并且是第一次提到，就必须是 I have an apple.。如果说“我喜欢苹果”，泛指所有苹果，那可以说 I like apples. （注意这里用了复数，前面就不加 a 或 an 了）。
* 例子：
* 错： She is teacher.
* 对： She is a teacher. （职业需要冠词）
* 错： I want book.
* 对： I want a book. （第一次提到，单数可数名词需要冠词）
错误 2：只看字母，不看发音。
这是最最常见的错误！因为我们习惯看写出来的字，容易忽略发音规则。
* 中文思维干扰： 比如 university，我们看到它以 'u' 开头，'u' 是元音字母，就想当然地认为应该用 an。但实际上，university 的发音是 /juː/，第一个音是 /j/，是辅音音，所以应该用 a。
* 例子：
* 错： an university
* 对： a university
* 错： a honest man
* 对： an honest man （因为 honest 的 'h' 不发音，以元音 /ɒ/ 开头）
* 错： an one-dollar coin
* 对： a one-dollar coin （因为 one 的发音是 /wʌn/，第一个音是 /w/，辅音音）
错误 3：对不可数名词和复数名词错误地使用 a 或 an。
a 和 an 只能用在单数的可数名词前面。看到不可数名词（如 water, rice, information, advice）或复数名词（如 books, chairs, ideas）时，就不能用 a 或 an。
* 中文思维干扰： 中文里“一些水”可以说“一些水”，有时会想当然地对应 a water。但英语里 water 是不可数名词，要说“一些水”要用 some water 或者 a little water。
* 例子：
* 错： I need a water.
* 对： I need some water. 或 I need a bottle of water. （如果想表达“一瓶水”）
* 错： He gave me an advice.
* 对： He gave me some advice. 或 He gave me a piece of advice.
* 错： I saw a cats.
* 对： I saw cats. 或 I saw some cats.
### Contrast With Similar Patterns
我们来对比一下 a/an 和其他一些容易混淆的词，比如 the 和 some。
| 词 | 用途 | 例子 | 解释 |
| :------ | :----------------------------------------- | :-------------------------------------------- | :------------------------------------------------------------------- |
| a/an | 用于不特定的单数、可数名词。 | a book, an apple | 泛指“任何一本/一个”，第一次提到，或者说明类别。 |
| the | 用于特定的、双方都知道的单数或复数名词。 | the book (我昨天跟你说的那本书), the apples | 指代已提到过、或大家都能指认出来的具体事物。 |
| some | 用于不特定的复数或不可数名词。 | some books, some water | 表示“一些”或“若干”，是泛指，但数量不确定，可以是多个或一部分。 |
| one | 表示确切数字“一”，强调数量。 | one book | 强调就是“一个”，而不是“两个或更多”，有时也用来和 a/an 区分，表示强调。 |
举例说明：
* I want a book. （我想要一本书。—— 随便哪本都行。）
* I want the book. （我想要那本书。—— 指的是我们都知道的那一本。）
* I want some books. （我想要一些书。—— 几本，不确定具体数量，复数。）
* I want one book. （我想要一本书。—— 强调就是一本，不是两本或更多。）
* I need an umbrella. （我需要一把伞。—— 泛指，不知道哪一把。）
* I need the umbrella. （我需要那把伞。—— 指的是大家知道的那把。）
* I need some water. （我需要一些水。—— 不可数，要一点。）
### Quick FAQ
Q1: 为什么 university 前面用 a，而 apple 前面用 an？它们不都以元音字母开头吗？
A1: 这是因为我们看的是发音，不是字母。university 的发音是 /juːnɪˈvɜːsəti/，第一个音是 /j/，这是一个辅音音（像 'y' 的发音）。而 apple 的发音是 /ˈæpl/，第一个音是 /æ/，这是一个元音音。所以，辅音音前面用 a，元音音前面用 an。
Q2: hour 和 honest 前面为什么用 an？它们不是以 'h' 开头的吗？
A2: 是的，它们以 'h' 开头，但是在这个单词里，'h' 是不发音的。所以，hour 的实际发音是 /aʊər/，第一个音是 /aʊ/，是元音音。honest 的实际发音是 /ˈɒnɪst/，第一个音是 /ɒ/，也是元音音。因为后面是元音音开头，所以我们用 an。
Q3: 我什么时候应该用 a/an，什么时候用 the？
A3: 这取决于你指的是不特定的还是特定的。当你第一次提到一个东西，或者泛指“任何一个”，就用 a/an。当这个东西已经被提到过，或者你和听话人都明确知道是哪一个时，就用 the。
Q4: a 和 an 后面能跟复数名词吗？
A4: 不能。a 和 an 只能用在单数的可数名词前面。如果你要说复数名词，并且是泛指，要用 some (e.g., some books)，或者直接用复数名词本身 (e.g., I like books.)。
希望今天的讲解能帮助你更好地理解和使用 a 和 an！多练习，你会越来越熟练的！

Choosing the Right Article

Article Sound Type Examples Exceptions
A
Consonant Sound
a car, a dog, a man
a university (Y sound)
An
Vowel Sound
an apple, an egg, an insect
an hour (Silent H)
A
Consonant Sound (Adjective)
a blue apple
a unique gift
An
Vowel Sound (Adjective)
an old car
an honest man

Meanings

The indefinite articles 'a' and 'an' are used before singular countable nouns to introduce something for the first time or to talk about a general member of a group.

1

General Introduction

Used to mention a person or thing for the first time in a conversation.

“I have a sister.”

“There is an ant on the table.”

2

Professions and Roles

Used when stating someone's job or role.

“He is a teacher.”

“I want to be an astronaut.”

3

Rates and Frequency

Used to mean 'per' or 'each' in measurements.

“Apples are $2 a kilo.”

“I exercise three times a week.”

Reference Table

Reference table for 不定冠词：A 与 AN 的区别
Form Structure Example
Affirmative
a/an + singular noun
I have a pen.
Negative
not + a/an + singular noun
I do not have a pen.
Question
Verb ... a/an + singular noun?
Do you have a pen?
With Adjective
a/an + adjective + noun
It is an expensive pen.
Job/Role
Subject + be + a/an + job
She is a doctor.
Frequency
Number + times + a/an + period
Twice a day.

正式程度

正式
Would it be possible to borrow a pen?

Would it be possible to borrow a pen? (School/Office)

中性
Can I borrow a pen?

Can I borrow a pen? (School/Office)

非正式
Got a pen?

Got a pen? (School/Office)

俚语
Yo, lend us a pen.

Yo, lend us a pen. (School/Office)

The Article Decision Tree

Is the noun singular and countable?

No

  • Water / Advice No article

Yes

  • Consonant Sound Use 'A'
  • Vowel Sound Use 'An'

Sound vs. Spelling

Starts with Vowel Letter
An Apple Vowel Sound
A University Consonant Sound (Y)
Starts with Consonant Letter
A Cat Consonant Sound
An Hour Vowel Sound (Silent H)

The 'A vs An' Flow

1

Does the next word start with a vowel sound?

YES
Use 'An'
NO
Use 'A'

Common 'An' Words

🍎

Food

  • • An apple
  • • An egg
  • • An orange
☂️

Objects

  • • An umbrella
  • • An eraser
  • • An iron
免费注册阅读完整解释

按水平分级的例句

1

I have a cat.

I have a cat.

2

She eats an apple.

She eats an apple.

3

It is a big house.

It is a big house.

4

He is a teacher.

He is a teacher.

1

I need an umbrella because it is raining.

I need an umbrella because it is raining.

2

He wants to be an actor in the future.

He wants to be an actor in the future.

3

Can I have a glass of water?

Can I have a glass of water?

4

They stay in a hotel every summer.

They stay in a hotel every summer.

1

It was an unusual day for everyone.

It was an unusual day for everyone.

2

She earns fifty thousand dollars a year.

She earns fifty thousand dollars a year.

3

I'll be ready in an hour.

I'll be ready in an hour.

4

He is a university student in London.

He is a university student in London.

1

A knowledge of French is required for this job.

A knowledge of French is required for this job.

2

It was a once-in-a-lifetime opportunity.

It was a once-in-a-lifetime opportunity.

3

He gave me an honest opinion about my work.

He gave me an honest opinion about my work.

4

We are looking for a European partner.

We are looking for a European partner.

1

A certain Mr. Jones called while you were out.

A certain Mr. Jones called while you were out.

2

The project was a failure on an epic scale.

The project was a failure on an epic scale.

3

He is a better player than a coach.

He is a better player than a coach.

4

It is an honor to meet you, Professor.

It is an honor to meet you, Professor.

1

The author provides an historical overview of the era.

The author provides an historical overview of the era.

2

Such a policy would be a disaster for the economy.

Such a policy would be a disaster for the economy.

3

He is a man of an independent mind.

He is a man of an independent mind.

4

The discovery was a breakthrough of an unprecedented nature.

The discovery was a breakthrough of an unprecedented nature.

容易混淆

Indefinite Articles: A vs. AN 对比 A vs. The

Learners often use 'the' when they should use 'a' for the first mention of an object.

Indefinite Articles: A vs. AN 对比 A vs. Some

Using 'a' with plural nouns or uncountable nouns.

Indefinite Articles: A vs. AN 对比 A vs. One

Using 'one' when 'a' is more natural.

常见错误

✗

I have a apple.

✓

I have an apple.

Apple starts with a vowel sound, so use 'an'.
✗

She is teacher.

✓

She is a teacher.

In English, you must use an article before a job title.
✗

I see a cats.

✓

I see cats.

'A' means 'one'. You cannot use it with plural nouns.
✗

He is an boy.

✓

He is a boy.

Boy starts with a consonant sound, so use 'a'.
✗

It is an university.

✓

It is a university.

University starts with a 'Y' sound, which is a consonant sound.
✗

I'll be there in a hour.

✓

I'll be there in an hour.

The 'H' in hour is silent; the word starts with a vowel sound.
✗

I want a water.

✓

I want some water / a bottle of water.

Water is uncountable. You can't use 'a' directly with it.
✗

He is a honest man.

✓

He is an honest man.

Honest has a silent H, so it requires 'an'.
✗

It was an unique experience.

✓

It was a unique experience.

Unique starts with the 'Y' sound.
✗

I need an advice.

✓

I need some advice.

Advice is uncountable in English.
✗

He is a MP.

✓

He is an MP.

When pronouncing the letter 'M', it starts with an 'E' sound (em-pee).

句型

I am a/an ___.

I have a/an ___ in my bag.

It is a/an ___ day.

She is a/an ___ person.

Real World Usage

Ordering at a Cafe constant

I'd like a croissant and an espresso.

Job Interviews very common

I am a motivated individual with an interest in tech.

Texting Friends constant

Wait a sec, I forgot an umbrella!

Doctor's Appointment common

I have a headache and an earache.

Shopping very common

Do you have a smaller size for this shirt?

Social Media Bio common

A traveler, a dreamer, and an optimist.

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💡

Trust Your Ears

If it feels hard to say 'a' followed by the word, you probably need 'an'. The 'n' is there to help you breathe!
⚠️

The 'U' Trap

Don't assume every 'U' word takes 'an'. Words like 'university', 'user', and 'unit' start with a 'Y' sound. Use 'a'!
🎯

Adjectives Matter

The article only cares about the word right next to it. 'An apple' but 'a red apple'.
💬

Jobs Need Articles

In English, saying 'I am doctor' sounds very broken. Always say 'I am a doctor'.

Smart Tips

Say the word out loud. If you blow air (house), use 'a'. If you don't (hour), use 'an'.

a hour → an hour

Check if it sounds like 'umbrella' (vowel) or 'university' (consonant 'Y').

an university → a university

Use the sound of the first letter's name. 'M' sounds like 'em' (vowel).

a MP → an MP

Never forget the article! It's a key difference between English and many other languages.

I am student. → I am a student.

发音

/ə/

The Schwa Sound

In normal speech, 'a' is pronounced as a weak /ə/ (schwa), like the 'a' in 'sofa'.

/ən ˈæp.əl/

Linking 'An'

The 'n' in 'an' usually attaches to the following vowel sound. 'An apple' sounds like 'a-napple'.

Unstressed Article

I have a ↘️DOG.

The article is usually unstressed; the stress falls on the noun.

记住它

记忆技巧

A is for the Alphabet's consonants; An is for the Apple's vowels.

视觉联想

Imagine the 'n' in 'an' as a bridge. You need a bridge to cross from one vowel sound to another so they don't crash into each other.

Rhyme

If it sounds like A, E, I, O, U, then 'AN' is the one for you!

Story

A traveler named 'A' only visits cities starting with hard sounds like 'B'oston or 'C'hicago. His friend 'An' only visits 'A'msterdam or 'I'taly because she loves vowels.

Word Web

SingularCountableGeneralSoundVowelConsonantArticle

挑战

Look around your room. Point to 5 things and say their name with 'a' or 'an' (e.g., 'a lamp', 'an armchair').

文化笔记

Some British speakers say 'an hotel' or 'an historic event', though 'a' is becoming more common.

Americans almost always use 'a' before 'historic' or 'hotel' because they pronounce the 'H' clearly.

Using the correct article for jobs is a sign of politeness and clarity in professional settings.

Both 'a' and 'an' come from the Old English word 'ān', which meant 'one'.

对话开场白

“

What do you want to be in the future?

“

What is in your bag right now?

“

Tell me about a movie you saw recently.

“

If you could have any animal as a pet, what would it be?

日记主题

Write about your typical breakfast. What do you eat and drink?
Describe your dream house. What rooms does it have?
Write about a person you admire. What is their job and why are they special?
Describe an unusual experience you had while traveling.

常见错误

Incorrect

正确

Incorrect

正确

Incorrect

正确

Incorrect

正确

Sign up free to see all tips

Test Yourself

Fill in the blank with 'a' or 'an'.

I have ___ orange in my bag.

✓ Correct! ✗ Not quite. Correct answer: an
Orange starts with a vowel sound.
Choose the correct sentence. 多项选择

Which sentence is correct?

✓ Correct! ✗ Not quite. Correct answer: He is an engineer.
Engineer starts with a vowel sound and needs an article.
Find the mistake in the sentence. Error Correction

Find and fix the mistake:

It takes a hour to get to London.

✓ Correct! ✗ Not quite. Correct answer: a
Hour has a silent H, so it should be 'an hour'.
Put the words in the correct order. Sentence Building

is / university / she / student / a

✓ Correct! ✗ Not quite. Correct answer: She is a university student.
University starts with a consonant 'Y' sound.
Which word takes 'an'? Grammar Sorting

Select the word that requires 'an'.

✓ Correct! ✗ Not quite. Correct answer: Honest
Honest is the only word here with a silent H.
Fill in the blank.

That was ___ unique opportunity.

✓ Correct! ✗ Not quite. Correct answer: a
Unique starts with a 'Y' sound.
Match the article to the word. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: 1-Banana, 2-Apple
Banana (consonant), Apple (vowel).
Choose the correct article for the abbreviation. 多项选择

He is ___ FBI agent.

✓ Correct! ✗ Not quite. Correct answer: an
The letter 'F' is pronounced 'ef', which starts with a vowel sound.

Score: /8

练习题

8 exercises
Fill in the blank with 'a' or 'an'.

I have ___ orange in my bag.

✓ Correct! ✗ Not quite. Correct answer: an
Orange starts with a vowel sound.
Choose the correct sentence. 多项选择

Which sentence is correct?

✓ Correct! ✗ Not quite. Correct answer: He is an engineer.
Engineer starts with a vowel sound and needs an article.
Find the mistake in the sentence. Error Correction

Find and fix the mistake:

It takes a hour to get to London.

✓ Correct! ✗ Not quite. Correct answer: a
Hour has a silent H, so it should be 'an hour'.
Put the words in the correct order. Sentence Building

is / university / she / student / a

✓ Correct! ✗ Not quite. Correct answer: She is a university student.
University starts with a consonant 'Y' sound.
Which word takes 'an'? Grammar Sorting

Select the word that requires 'an'.

✓ Correct! ✗ Not quite. Correct answer: Honest
Honest is the only word here with a silent H.
Fill in the blank.

That was ___ unique opportunity.

✓ Correct! ✗ Not quite. Correct answer: a
Unique starts with a 'Y' sound.
Match the article to the word. Match Pairs

1. A 2. An

✓ Correct! ✗ Not quite. Correct answer: 1-Banana, 2-Apple
Banana (consonant), Apple (vowel).
Choose the correct article for the abbreviation. 多项选择

He is ___ FBI agent.

✓ Correct! ✗ Not quite. Correct answer: an
The letter 'F' is pronounced 'ef', which starts with a vowel sound.

Score: /8

Practice Bank

10 exercises
Complete the sentence 填空

Can you give me ___ hand with this box?

✓ Correct! ✗ Not quite. Correct answer: a
Check the article 多项选择

Choose the correct phrase:

✓ Correct! ✗ Not quite. Correct answer: An Uber driver
Fix the sentence Error Correction

It was a exciting game.

✓ Correct! ✗ Not quite. Correct answer: It was an exciting game.
Put the words in order Sentence Reorder

apple / I / an / ate

✓ Correct! ✗ Not quite. Correct answer: I ate an apple
Translate to English 翻译

Ella es una ingeniera.

✓ Correct! ✗ Not quite. Correct answer: She is an engineer.
Match the article to the word Match Pairs

Match 'a' and 'an'

✓ Correct! ✗ Not quite. Correct answer: a:laptop, an:earphone, a:user, an:owner
Fill the gap 填空

That is ___ unusual name!

✓ Correct! ✗ Not quite. Correct answer: an
Social Media Grammar 多项选择

Which is correct for a caption?

✓ Correct! ✗ Not quite. Correct answer: Post a photo
Spot the error Error Correction

Do you have an car?

✓ Correct! ✗ Not quite. Correct answer: Do you have a car?
Translate 'un mensaje' 翻译

How do you say 'un mensaje'?

✓ Correct! ✗ Not quite. Correct answer: a message

Score: /10

常见问题 (8)

It's about the sound. 'University' starts with a 'Y' sound (consonant), while 'umbrella' starts with an 'U' sound (vowel).

No. 'A' and 'an' mean 'one'. For plural words, use no article or 'some'.

It is `an hour` because the 'H' is silent and the first sound is a vowel.

Yes, always! 'I am a doctor' or 'She is an artist'.

The article matches the adjective. 'An apple' but 'a big apple'.

Usually no, because water is uncountable. You can say 'a glass of water' or 'a bottle of water'.

Both are used, but `a historic` is more common in modern English. Some people use 'an' if they don't pronounce the 'H' strongly.

If you can put a number in front of it (1 dog, 2 dogs), it is countable and can use 'a/an'.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

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In Other Languages

Spanish moderate

un / una

English has no grammatical gender for articles.

French moderate

un / une

French articles don't change based on vowel sounds in the same way 'a/an' does.

German partial

ein / eine / einen

English articles are much simpler as they don't have cases.

Japanese none

None

Japanese speakers must learn to add 'a/an' where they usually have nothing.

Arabic low

Nunation (tanween)

The indicator of indefiniteness is at the end of the word in Arabic, but at the start in English.

Chinese partial

一个 (yī gè)

In Chinese, the measure word changes based on the object's shape/type, not its sound.

Learning Path

Prerequisites

Previous
英语冠词: A, An 和 The
Next
单词“The”（定冠词）

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A1 Requires

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