Examples Help! Types of Articles - the Definite Article
'The' is called the definite article because it points out some particular person or thing. The English definite article is most commonly used before singular and plural nouns. Examples: The cat on the mat is white.
Examples Help! Types of Articles - the Indefinite Article
'A or an' is called the indefinite article because it does not point out any particular person or thing. Examples: “a dog” or “an apple” or “an orange.” The word 'An' is used when the next word begins with a vowel or a silent (unpronounced) h, as in “an elephant” or “an hour.”