1. Definite and Indefinite Articles by Soledad Morales Sánchez is licensed under a Creative Commons
Reconocimiento-NoComercial-SinObraDerivada 3.0 Unported License.

2. Here are the rules for when to use "A, An or The":
a = indefinite article (not a specific object, one of a number of the same
objects) with consonants
She has a dog.
I work in a factory.
an = indefinite article (not a specific object, one of a number of the same
objects) with vowels (a,e,i,o,u)
Can I have an apple?
She is an English teacher.
the = definite article (a specific object that both the person speaking and the
listener know)
The car over there is fast.
The teacher is very good, isn't he?
The first time you speak of something use "a or an", the next time you repeat
that object use "the".
I live in a house. The house is quite old and has four bedrooms.
I ate in a Chinese restaurant. The restaurant was very good.
DO NOT use an article with countries, states, counties or provinces, lakes
and mountains except when the country is a collection of states such as "The
United States".
He lives in Washington near Mount Rainier.
They live in northern British Columbia.
Use an article with bodies of water, oceans and seas -
My country borders on the Pacific Ocean
DO NOT use an article when you are speaking about things in general
I like Russian tea.
She likes reading books.
DO NOT use an article when you are speaking about meals, places, and
transport
He has breakfast at home
I go to university.
He comes to work by taxi.

3. Put a, an, the, or  nothing in the blanks in the following sentences.
1. _____ friend of mine is coming to visit next week.
2. _____ Italian people love Stuart, and now he is working for ______
international radio station.
3. Steve comes from_______ United States. He lives in _______ New York.
4. I heard ______ knock on ______ door.
5. When do you get ______ home?
6. There was _____ song in _____ bedroom.
7. Are you ______ doctor?
8. My country borders on _____ Pacific Ocean.
9. We are ______ Mexicans
10. I am afraid I can’t remember ________ exact date of _____ the concert.
Complete these paragraphs with a, an, the, or  nothing.
1 _______ Eiffel Tower in Paris was built between 1887 and 1889. 2 ______
architect was Stephen Sauvestre.
There is 3 _____ restaurant on the second level called 4 ______ Jules Verne
Restaurant and there is 5 _______ restaurant on the first level called 6.
________Altitude 95. There are 7 _______ stores on the third level and of course
there is 8 ______ great view of 9 ______ city. There are 1,665 steps to 10_____
top of 11_____ the tower, but there is also 12 ______ elevator.

4. Answers
Put a, an, the, or  nothing in the blanks in the following sentences.
1. a
2. - the
3. the- 
4. .a-the
5. 
6. a-the
7. a
8. the
9. 
10. the-the
Complete these paragraphs with a, an, the, or  nothing.
1. The
2. The
3. A
4. The
5. A
6. Nothing
7. Nothing
8. A
9. The
10. The
11. The
12. An