[Friendship 4-5/1999, page 8]
…there is a 2% reduction in heart attacks.
[Friendship 9-10/2000, page 21]
The
 We use the definite article in reading the dates and in reading the Ordinal Numerals:
Eg: 13th July … the thirteenth of July
19th century…the nineteenth century
It was the first law…
[Friendship 9-10/2000, page 6]

4) A/an
 We use the indefinite article before countable nouns in the singular, we do not use the indefinite article in plural:
Eg: A boy - boys
He is a victim of a brutal war between Chu`s Asian crime family and…
There were many victims during the time of slavery.
[Friendship 9-10/2000, page 6, 25]
 You cannot use singular countable nouns alone (without a/an):
Eg: But if you really posted a letter …
...the program I was working with in Slovakia came to an end…
[Friendship 4-5/1998, pages: 1, 9]
The
 We use the definite article in singular, but also in plural:
Eg: Sing: Yesterday I gave you the toy I liked best of all.
Plur: Yesterday I gave you the toys I liked best of all.
 And also we use it with countables and uncountables in the singular and plural:
Eg: In the 13th century…
During the four centuries that span…
[Friendship 9-10/2000, page 11]

5) A/an
 We use the indefinite article before countable nouns after there is, there was, there will be:
Eg: In 1879 there was only a small store,…
Many people believe there is a special code …
[Friendship 4-5/1999, page 24]

6) A/an
 We do not use the indefinite article before uncountable nouns:
Water, milk, steel, snow, love, cleverness
Eg: …as boys throwing water or perfume… [Friendship 8/2000, page 10]
 You cannot normally use the indefinite article with uncountable nouns, but we can often use “a…of…”:
Eg: …a better understanding of why countries have…
[Friendship 6/2000, page 14]
Basically: a love of nature equals love of man and awareness of God.
[Friendship 9-10/2000, page 34]
…a team of scientists has taken a number of sharks and genetically…
[Friendship 3/1999, page 13]
The
 We use the definite article in phrase “the…of“:
Eg: Many people think this is the real strength of Wordsworth`s poetry…
It marked the start of a special time for Wordsworth…
[Friendship 9-10/2000, page 34]
As one passes through the city of Orlando to the south, …
[Friendship 4-5/1999, page 19]

7) A/an
 Using the indefinite article with countable nouns:
- Example of a physical or concrete thing:
Countable nouns: Uncountable nouns:
I`m looking for a job. I`m looking for work.
What a beautiful view! What beautiful scenery!
- Instance of a substance or an idea:
Countable nouns: Uncountable nouns:
I had a stone in my shoe. The statue was made of stone.
The
 We use the definite article with a plural or uncountable noun in talking about specific things of people:
Eg: She`s an expert on Swedish geology.
Specific thing: She`s an expert on the geology of Sweden. Uncountable: Perhaps, the loneliness of such a life is too a high price to pay.
…wheter cholesterol played any role in causing the plague…
[Friendship 9-10/2000, page 21, 23]
Even when Americans write to Europeans about the weather…
[Friendship 8/1999, page 11]

7) A/an
 We use the indefinite article in these word combination, fixed idioms and
connections:
to be in a hurry, to be at a loss, to be in a rage, to have a headache, to have a toothache, in a loud voice, in a whisper, it´s a pity, to have a rest
The
 We use the definite article in these word combinations, fixed idioms and
connections: for the moment, to tell the truth, nothing of the kind, at the top of,
in the morning/afternoon/evening, on the other hand, on the left, what`s the time,
to go to the theatre, to play the piano, to pass the time etc.
Eg: …at the foot of the cliffs rather than at the top of them.