The articles A/AN and THE.

THE ARTICLES

A, AN AND THE

The articles a and an are always used to refer to singular nouns.

• a: starts with a consonant.

        Examples: 1. I have a dog.

                          2. There is a chair.

             

• an: starts with a vowel or vowel sound.

       Examples: 1. My friend bought an alligator.

                         2. She doesn't have an umbrella.

• the: It's used for specific, singular and plural nouns.

       Examples: 1. The Earth is big.

                         2. The president of USA.