Usage of A and An
Using articles is one of the hardest parts of learning English for students.
Therefore, I have typed up some of the most important rules in a series of blog notes. Each usage note has examples so you can see how the rule is applied.
1 – The listener does not know
When the listener does not know the thing we are talking about use a or an.
I was born in a town in the south west of England.
He works in a technology company.
There was a robbery today.
2 – All things
When we want to say something about all things of that kind we use a or an.
A woman needs good shoes.
A library needs books.
A house has to have a roof.
3 – One of a group
Use a or an when expressing if something is part of a group.
She is a member of the English club.
Fred is a student at Cambridge University.
Claire works in a school.