Indefinite Articlces: A / AN
A is used with countable nouns that begin with a consonant
Please hand me a pencil.
I would like to buy a newspaper.
An is used with countable nouns that begin with a vowel
An apple a day keeps the doctor away.
Please bring an umbrella with you.
Spelling is not a reliable indicator for using a or an. If a word starts with a consonant but sounds like it starts with a vowel, use an. If a word starts with a vowel but sounds like it starts with a consonant, use a.
I made an honest mistake.
I’ll send an SOS to the world.
I will attend a university next year.
A or an is used before a countable noun the first time it is mentioned. Thereafter, the is used to refer to the noun.
I will buy a present for my brother. The present must be under 20 dollars.
A or an are used with professions.
My brother is a teacher, and his wife is an accountant.
A or an can be used instead of per when used to express rate.
I go to the gym three times a week.
I am paid 5 dollars an hour.
Include a or an to the words little for few to make a more positive connotation.
She makes a little money.
She makes little money.