A: Usually used before a noun that begins with a consonant, such as: B, C, S and T.
When the vowel U and the combination EU are pronounced as
you, they are considered a vowel. For example.
Before a word that begins with an h that produces a scratchy sound, a is used.
Examples: a university, a unit, a euro, a European
Examples: a horse, a home, a hat, etc.
An is normally used before a noun that begins with a vowel, such as: a, e, i.
Examples: an apple, an idea, an air.
When the vowel u is pronounced as
uh, it's considered a vowel. That is why it is still used with words and phrases.
Before a word that begins with a silent h, an is used.
Examples: an umpire, an unfinished project,
an unimportant detail.
Examples: an hour, an honor
We use the definite article in front of a noun when we believe the listener/reader knows exactly what we are referring to:
Examples : The Pope is visiting Russia.
The moon is very bright tonight.
Who is the president of France?
We also use the definite article:
to say something about all the things referred to by a noun:
Examples: -The wolf is not really a dangerous animal.
- The kangaroo is found only in Australia.
We do not normally use the definite article with names:
-William Shakespeare wrote Hamlet.
-Paris is the capital of France.
-Iran is in Asia.
But we do use the definite article with:
the People's Republic of China
Examples: A boy, a cat, a dog, a girl.
Jean Pierre Olmedo
Aaron Leonel Delgado
Cristhian Granda
Sebastián Mejía