a or an - the difference - exercise
Indefinite articles
Use a / an to say what a person or thing is.
Examples: He is a friend.
a - indefinite article
a : one person or one thing
Indefinite article before consonant: a.
Example: a friend, a box
an - indefinite article
an: before a, e, i, o, u
Examples: an apple, an animal
But:
an hour (h is not pronounced)
a university, a user, a unit
...
Definite article the
Use the to refer to people or objects that are unique and to refer to something that has already been mentioned. Use the when you know, which thing or person you mean.
English a an - definite and indefinite articles exercises
a an - definite and indefinite articles with free online exercises, examples and sentences, questions and a an - definite and indefinite articles negative sentences.
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