The definite article: 'the'

This is why we use the definite article with a superlative adjective:

He is the tallest boy in the class.
It is the oldest building in the town.

• because there is only one in that context:

We live in a small house next to the church. (= the church in our village)
Dad, can I borrow the car? (= the car that belongs to our family)
When we stayed at my grandmother’s house, we went to the beach every day. (= the beach near my grandmother’s house)
Look at the boy over there. (= the boy I am pointing at)

• because we have already mentioned it:

A young man got a nasty shock when he tried to rob a jewellery shop in Richmond. The man used a heavy hammer to smash the windows in the shop.

We also use the definite article:

• to say something about all the things referred to by a noun:

The wolf is not really a dangerous animal. (= Wolves are not really dangerous animals.)
The kangaroo is found only in Australia. (= Kangaroos are found only in Australia.)
The heart pumps blood around the body. (= Hearts pump blood around bodies.)

We use the definite article in this way to talk about musical instruments:

Joe plays the piano really well.
She is learning the guitar.

• to refer to a system or service:

How long does it take on the train?I heard it on the radio.You should tell the police.

Level: intermediate

We can also use the definite article with adjectives like rich, poor, elderly and unemployed to talk about groups of people: 

Life can be very hard for the poor.
I think the rich should pay more taxes.
She works for a group to help the disabled.

Level: beginner

The definite article with names

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:

• countries whose names include words like kingdom, states or republic:

•  countries which have plural nouns as their names:

• geographical features, such as mountain ranges, groups of islands, rivers, seas, oceans and canals:

• newspapers:

• well-known buildings or works of art:

• organisations:

• hotels, pubs and restaurants:

But note that we do not use the definite article if the name of the hotel or restaurant is the name of the owner:

• families:

Determiners and quantifiers

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