1. Articles "a" and "an" are used with countable nouns in singular form and for jobs or occupations. They are also used in exclamations with a singular noun. 2. "A" is used to indicate frequency. 3. The definite article "the" is used when the noun is specific or mentioned before, with cinema, theatre, and radio, to refer to a group of people, and in progressive constructions. 4. Articles are omitted when speaking in a general sense, with sports, usual places, and with last and next.

1. ARTICLES
A/AN
USE
1.-Countable nouns in singular
A house/An army
2.-Jobs
He works as a doctor/He is a doctor
3.-Exclamations with singular noun
What a nice girl!
What nice doctors!
How intelligent!
4.-Frecuency
He goes there three times a week
OMISSION
1.-After meals: breakfast, lunch, dinner, supper, tea
We usually have breakfast at eight
But We had a great breakfast (yes if they have adjective)
THE
USE
1.-When the noun is specific or mentioned before
The wine of La Rioja is great
2.-With: cinema, theatre and radio but not with TV
We went to the cinema
We don’t like TV
3.-With musical instruments
He plays the piano
4.-To refer to a group of people
I want to live as the rich
5.-Progressive construction
The more the better
OMISSION
1.-Speaking in general sense
Time is money
Cats are beautiful animals
2.-Sports
We play basketball
3.-Usual places: bed, school, university, collegue, work, church, prison,
hospital
I went to bed
4.-With last and next
I was there last week