The indefinite article takes two forms. It’s the word a when it precedes a word that begins with a consonant sound. It’s the word an when it precedes a word that begins with a vowel sound. The indefinite article indicates that a noun refers to a general idea or category of a thing rather than a specific thing.
For example, you might ask your friend, “Should I bring a gift to the party?” Your friend will understand that you are not asking about a specific type of gift or a specific item. “I am going to bring an apple pie,” your friend tells you. Again, the indefinite article indicates that she is not talking about a particular apple pie. Your friend probably doesn’t even have any pie yet. The indefinite article appears only with singular nouns. Consider the following examples of indefinite articles used in context:
- Please hand me a book; any book will do.
- Please hand me an autobiography; any autobiography will do.
More examples: Using a or an
As mentioned, the rule is to use a before words that start with a consonant sound and an before words that begin with a vowel sound. This can be tricky because some words that start with consonants don’t start with a consonant sound; the same is true of some words that start with vowels. The first letter of the word honor, for example, is a consonant, but it’s unpronounced. Despite its spelling, the word honor begins with a vowel sound. Therefore, we use an. Consider the example sentence below for an illustration of this concept.
Incorrect: My mother is a honest woman.
Correct: My mother is an honest woman.
Similarly, when the first letter of a word is a vowel but is pronounced with a consonant sound, use a, as in the sample sentence below:
Incorrect: She is an United States senator.
Correct: She is a United States senator.
This holds true for acronyms and initialisms too: an LCD display, a UK-based company, an HR department, a URL.
Leave a Reply