Does the vowel begin with an? What is the other vowel phoneme?

26 letters are divided into 5 vowels (a, e, I, o, U)+2 1 consonant.

Adding the indefinite article a/an depends on the pronunciation of the first letter of the word, not the vowel.

Vowel phoneme refers to the pronunciation of vowels (a, e, i, o); U is a special case, with two pronunciations, one is vowel phoneme and the other is not.

For example: Apple-> The pronunciation of the first letter A must be a vowel phoneme, so 1 apple = an apple.

Special case:?

1, umbrella->; The pronunciation of the first letter U is similar to that of the letter A, so it must be a vowel phoneme, so 1 umbrella = an umbrella.

2, the university->; The first letter u is pronounced differently from the letter A/E/I/O, so it is not a vowel phoneme, so 1 university = a university.

3. Hour-> Although the first letter is H, it is not a vowel letter, and H is not pronounced at this time, so if you look at the second letter O, it must be a vowel phoneme, so 1 hour = one hour.

Extended data

Usage of indefinite articles a and an

1.a and an are used before the singular of countable nouns. Pay attention to the noun q at the beginning of consonant with a; An is used before nouns that begin with vowels. Everyone should pay attention to distinguish clearly, vowel consonants are not equal to vowels and consonants.

For example:

A computer, a computer;

A desk and a table;

The country is the country;

A university, a university;

A European. A European.

Here, the vowel letter e begins, but e is not pronounced.

So let's look at nouns that start with vowels, such as:

An apple, an apple;

An egg;

An uncle;

An umbrella, an umbrella;

U here is the same as the previous university. At the beginning of the word, the u in the university is pronounced as a semi-vowel /ju/, so it is used as a consonant and the university is used. Here, umbrella is pronounced vowel//,so use an umbrella.

For example, many of our letters usually start with vowels.

X, an "x", m, n, f, l, etc. , all start with "an": an "m, n, f, l",

So this is the first point that we should pay attention to.

Second, the usage of a and an.

1 first of all, a and an are used before the singular form of countable nouns to refer to a noun mentioned for the first time. When we were talking, we mentioned it for the first time, for example:

I need an English grammar book. I need an English grammar book.

They live in a two-story house. They live in a two-story house.

He bought a pencil. He bought a pencil.

2, they can be used in front of singular nouns, of course, can also be used in front of countable nouns, said a class of people or things, more special, generally refers to, for example:

Bicycles are very useful in the country. Bicycles are very useful in the country.

Bicycles are not bicycles here, but something like bicycles.

Elephants are stronger than horses.

Elephant doesn't mean elephant, but elephant. Horses are animals like horses. Elephants are stronger than horses.

3, a very special usage, used before numbers.

One hundred, one thousand, one hundred and fifty, but half an hour, we can say half an hour or half an hour.

4.a and an can also be used for price, speed, ratio, frequency and so on.

We often say, twice a week, once a week. Or we can say that 6 kilometers per hour means speed, 60 kilometers per hour. Or we can say that fifty yuan a catty is fifty yuan a catty, and A and an are equivalent to "every" and "one".

The interjections we will learn in the future are often used.

What a beautiful day! What a beautiful day!

What a lovely baby! What a lovely child!

What a beautiful campus! What a beautiful campus!

What an exciting trip! Exciting trip!

Such a boring job! What a tiring job!

Such an exciting trip! ? Exciting trip!

6. The usage is quite special. We often use someone to go. In this case, we mean this person, I am not familiar with him, he is a stranger to me.

A Mr Black has a Mr Black, a Mrs. Black has a Mrs. Black, a Miss Black has a Miss Black.

7.a and an can be used in some fixed phrases, mainly related to quantity.

A few, a few, a piece, a piece, a piece. In short, a piece is most commonly used to modify uncountable nouns, indicating the number of uncountable nouns.

One day, many, many, and so on.

These are the main uses of indefinite articles a and an.

Third, the case where A and an are not used.

First, never use it before uncountable nouns; Second, in front of plural nouns, of course, it can't be used; Thirdly, it should be noted that we generally don't add A or an before three meals a day, such as dinner, breakfast, lunch and supper.

But what we should pay attention to is that if there are adjectives before three meals a day, in this case, this three meals a day is more specific, adding ah or an:

A good meal.

A hearty breakfast. A hearty breakfast.

Welcome him to the dinner party.

Note: A, an and one represent numbers, or time, place, weight, etc. A, an and one can be used interchangeably:

A pound/pound

In other usages, a and an cannot be replaced by one.

References:

Baidu Encyclopedia-Vowel Baidu Encyclopedia-Vowel Phoneme