Indefinite Articles A An Usage RulesSet 20
Frequently Asked Questions
When should "a" be used instead of "an"?
"A" is used before words that start with a consonant sound, while "an" is used before words that start with a vowel sound. This rule applies regardless of the actual first letter of the word.
How do indefinite articles function with countable nouns?
Indefinite articles "a" and "an" are used with singular countable nouns to refer to a non-specific item. For example, "a book" refers to any book, not a specific one.
What is the correct usage of indefinite articles in idiomatic expressions?
In idiomatic expressions, the choice between "a" and "an" follows the same rules as in regular sentences, based on the sound of the following word. For example, "an apple a day" uses "an" because "apple" starts with a vowel sound.
How do indefinite articles work with professional titles?
Indefinite articles are used with singular job titles to refer to a non-specific person in that role. For example, "a doctor" refers to any doctor, not a specific one.
Can indefinite articles be used with plural nouns?
No, indefinite articles "a" and "an" are used only with singular countable nouns. Plural nouns do not require indefinite articles.