Singular nouns name one person, place, thing, or idea.
Give me a pen.
I need a bicycle.
Bring me an umbrella.
Use “a” before words beginning with consonants.
a boy, a car, a house, a book, a cat, a question
Use “an” before words beginning with vowels (a, e, i, o, u).
an actor, an apple, an elephant, an easy question
Use a (not an) before words pronounced with a consonant sound.
a unit, a euro, a user, a university, a uniform
Use an (not a) before words pronounced with a vowel sound.
an hour, an honor, an FBI agent, an honest man
