A / AN

A/AN - Artigo Indefinido (um /uma)

Uso:

A - antes de palavras que começam com consoantes.

AN - antes de palavras que comecem com vogal ou com som de vogal.

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It is an old university.

It is an exception to the rule.

It is a long trip, but it is an easy trip.

It is a large library.

It is an orange.

It is a pear.

He is an honest man.

She is an old woman.

It is a tall tree.

It is an apple.

It is an old bus.

It is an empty bottle.

It is an hour till lunch.

It is a windy day.

It is a good idea.

It is a good movie.

It is a hot day.

I am a student.

He is a businessman.

Paul is a lawyer.

It is a beautiful dress.

He is a frenchman.

He is a young man.

He is wearing a uniform.

There is a university there.

Qualquer dúvida na matéria favor comentar.