Omission

There are cases when a / an and the are not used - omitted.कुछ मौके होते हैं जब a / an और the छोड़े जाते हैं.

Omission of a / an

Case 1.

A / An is omitted before a plural noun.बहु वाचक संख्या के पहले A / An को छोड़ दिया जाता है.

This is a boy.a is used to indicate a single boy.
These are boys.A / an is not used when it is multiple (plural).

Case 2.

A / An is omitted before uncountable nouns.असंख्य संज्ञा के पहले A / An का प्रयोग नहीं किया जाता है. Nouns like, bread, information, damage

Whenever such nouns are used in a countable way, then it may use a / an.जब ऐसे संज्ञा का संख्यात्मक तरीके से उपयोग होता है, तब a / an का उपयोग कर सकते हैं.

We drink tea.Here tea is used as a regular (uncountable) noun.
Please give me a tea.Here a is used to indicate one cup of tea (countable).

Case 3

A / An are omitted before names of meals.भोजन के नाम के पहले A / An का उपयोग नहीं किया जाता

Let us have lunch together.

Exception

But, the indefinite article is used when...लेकिन, A / An का उपयोग उस वक्त किया जाता जब...

the name of the meal is preceded by an adjective. उस भोजन साथ कोई विलेशण जुड़ा हो
the name refers to a special meal given to celebrate something or honour someone.वह भोजन किसी खास मौके पर या किसी के सम्मान में दिया जाता है.

Let us have a special lunch together.
I would like to host a dinner to welcome my friend.

Omission of the

Case 1.

The is omitted before names of persons and in most cases before names of places.The का उपयोग किसी व्यक्ती के नाम के पहले नहीं किया जाता है, और कुछ जगह के नाम को छोड़, the का उपयोग किसी जगह के नाम के आगे भी नहीं किया जाता है.

Case 2

The is omitted before abstract nouns, except in when they are used do denote a particular event or concept.

Lifes are lost during war.
The war of Panipat happened in the sixteenth century.

Case 3

The is omitted after a noun in the possessive case or a possessive adjective.

Observe the use of the with father

The boy's father is a doctor
The father of the boy is a doctor.

Observe the use of the with car

It is my car.
The car is mine.

Case 4

The is omitted before names of games.

He plays cricket.
Let us play football.

Case 5

There are some words before which the is omitted, like home, temple, hospital, school, work, sea, work, etc.

the word "home"

The is omitted when the word home is used alone.

I stayed at home today.
He went home.

The is not omitted when the word home has a descriptive word or phrase before or after it is used as any other noun.

This is the home of your boss.

words like "bed", "temple", "hospital", "school" etc

The is omitted when the places indicated by such words are visited or used for their primary purpose.

He is in hospital for treatment.
He is in the hospital to visit is friend.
His house is near the sea.
She has gone to temple to pray.
She has gone to the temple to see the beautiful statues.

words like "work" and "office"

The is omitted when work indicates place of work or working hard.

He is at work.
He is not back from office.
She is hard at work to find a cure for the illness.