The book you want is out of print. (Which book? The one you want)Let's go to the park. (= the park in this town)
The girl cried, (the girl = the girl already talked about)
2. When a singular noun is meant to represent a whole class; as,
The cow is a useful animal.
(or we may say, "Cows are useful animals.")
The horse is a noble animal.
The cat loves comfort.
The rose is the sweetest of all flowers.
The bayan is a kind of a fig tree.
(Do not say, "a kind of a fig tree." This is a common error)
The two nouns man and woman can be used in a general sense without either article.
Man is the only animal that uses fire.
Woman is man's mate.
But in present-day English a man and a woman (or men and women) are more usual.
A woman is more sensitive than a man.
3, Before some proper names, viz., these kinds of place names;
- Oceans and seas, e,g. The Pacific, The Black Sea.
- Rivers e.g. The Ganga, The Nile.
- Canals e.g. The Suez Canal.
- Deserts e.g. The Sahara.
- Groups of Islands e.g. The West Indies.
- Mountains-ranges e.g. The Himalayas, The Alps
- A very few names of countries, which include words like republic and kingdom (e.g. the Irish Republic, the United Kingdom) also the Ukraine, the Netherlands (and its seat of government the Hague).
Before the names of certain books; as,
The Vedas, the Puranas, the Ramayana, the Bible, the Kuran, etc.,
But we say;
Valmiki's Ramayana.
Before names of things unique of their kind; as,
The sun, the sky, the ocean, the sea, the earth.
[Note: Sometimes the is placed before a Common noun to give it the meaning of an Abstract noun; as, At last, the warrior (the warlike ir martial spirit) in him as thoroughly around]
Before a Proper Noun when it is qualified by an adjective or a defining adjectival clause; as,
The Great Caesar.
The immortal Shakespeare.
The Roy whom you met last night is my uncle.
With Superlatives; as,
The darkest cloud has a silver lining.
This is the best book on elementary chemistry.
With ordinals; as,
He was the first man to arrive.
The ninth chapter of the book is very interesting.
Before musical instruments; as,
He can play the flute.
Before an adjective when the noun is understood; as,
The poor are always with us.
Before a noun (with emphasis) to give the force of a Superlative; as,
The Verb is the word (=the chief word) in a sentence.
As an Adverb with Comparatives; as,
The more the merrier.
(=by how much more, by so much the merrier)
The more they get, the more they want.
Use of the Indefinite Article
The Indefinite Article is used -
In its original numerical sense of one; as
Twelve inches make a foot.
Not a word was said.
A word to the wise is sufficient.
A bird in the hand is worth two in the bush.
In the vague sense of a certain; as,
A Kishore Kumar (=a certain person named Kishore Kumar) is suspected by the police.
One evening a beggar came to my door.
In the sense of any, to single out an individual as the representative of a class; as,
A pupil should obey his teacher
A cow is a useful animal.
To make a common noun of a proper noun; as,
A Daniel come to judgment! (A Daniel = a very wise man)
Omission of the Article
The Article is omitted -
Before names of substances and abstract nouns (i.e. uncountable nouns) used in a general sense; as,
Sugar is bad for your teeth.
Gold is a precious metal.
Wisdom is the gift of heaven.
Honesty is the best policy.
Virtue is its own reward.
Note:- uncountable nouns take the when used in a particular sense (especially when qualified by an adjective of adjectival phrase of clause); as,
Would you pass me the sugar? (=the sugar on the table)
The Wisdom of Solomon is great.
I can't forget the kindness with which he treated me.
Before plural countable nouns used in a general sense; as,
Children like chocolates.
Computers are used in many offices.
Note that such nouns take the when used with a particular meaning; as,
Where are the children? (=our children)
Before most proper nouns (except those referred to earlier), namely, names of people (e.g. Gopal, Rahim), names of continents, countries, cities, etc, (e.g. Europe, Pakistan, Nagpur), names of individual mountains (e.g. Mount Everest), individual islands, lakes, hills, etc.
Before names of meals (used in a general sense); as,
What time do you have lunch?
Dinner is ready.
Note: We use a when there is an adjective before breakfast, lunch, dinner, etc. We use the when we specify.
I had a late lunch today.
The dinner we had at the Tourist Hotel was very nice.
Before languages; as,
We are studying English.
They speak Punjabi at home.
Before school, college, church, bed, table, table, hospital, market, prison, when these places are visited or used for their primary purpose; as,
I learned French at school.
We go to church on Sundays.
He stays in bed till nine every morning.
Note:- The is used with these words when we refer to them as a definite place, building or object rather than to the normal activity that goes on there; as,
The school is very near my home.
I met him at the church.
The bed is broken.
I went to the hospital to see my uncle.
Before names of relations, like father, mother, aunt, uncle, and also cook and nurse, meaning 'our cook', 'our nurse', as,
Father has returned
Aunt wants you to see her.
Cook has given notice.
Before predicative nouns denoting a unique position, i.e., a position that is normally held at one time by one person only; as,
He was elected chairman of the Board.
Mr. Banerji became the principal of the college in 2005.
In certain phrases consisting of a transitive verb followed by its object; such as,
to catch fire, to take a breath, to give battle, to cast anchor, to send word, to bring word, to give ear, to lay siege, to set sail. to lose heart, to set foot, to leave home, to strike root, to take offense.
In certain phrases consisting of a preposition followed by its object; as,
at home, in hand, in debt, by day, by night, at daybreak, at sunrise, at noon, at sunset, at night, at anchor, at sight, on-demand, at interest, on earth, by land, by water, by a river, by train, by steamer, by name on horseback, on foot, on deck, at dinner, at ease, underground, above ground.