Theory:

What part of speech isThere?
The word “there” has multiple functions. In verbal and non-verbal English, the word can be used as an adverb, a pronoun, a noun, an interjection, or an adjective.
1. Adverb
This word is classified as an adverb if it is used to modify a verb in the sentence.
Example:
They went there only to find out that it was postponed.
The word “there” is considered as an adverb because it describes the verb “went.”
2. Pronoun
Sometimes, the word “there” is categorised under pronouns, if it is used to replace a noun in the sentence.
Example:
Hello there!
The word “there” is considered as a pronoun because it substitutes the name of the person.
3. Noun
There are also some cases where the word “there” is considered as a noun, which refers to a particular point or place.
Example:
There is no there and no here in pure space.
The word “there” is used as a noun, which refers to a location.
4. Interjection
Other times, the word “there” is categorised as an interjection, when it is used to exclaim or emphasise something.
Example:
There, it’s finished!
The word “there” is used for emphasis or to draw attention to a particular thing.
5. Adjective
In some cases, the word “there” is considered as an adjective when it is used to modify a noun or a pronoun.
Example:
She is there to answer any questions you might have.
The word “there” modifies the pronoun “she” and is therefore considered as an adjective.
The examples of using the word "There" in the sentences from the lesson "A Game of Chance":
1. The fair is in our village.
    There was a fair in our village.
 
2. Many goods are to be sold on this occasion.
    There are many goods to sell in this occasion.
 
3. A big crowd was at the fair.
    There was a big crowd at the fair.
 
4. I would have liked to buy many things, but I waited for my uncle to return.
    There were many things I would have liked to buy, but I waited for my uncle to return.
 
5. The discs numbered from one to ten are facing down on the table.
    There were discs numbered from one to ten which are facing down on the table.
 
6. Many people saw the boy and his poor luck in the fair.
    There were so many people seeing him of his poor luck.
 
7. At the end, a list of discs are to be added.
    There is a list of discs that are to be added at the end.
 
8. The friends of the shopkeeper keeps on winning the game.
    There were the friends of the shopkeeper.
 
9. An old man was at the lucky shop.
    There was an old man at the lucky shop.
 
10. The shopkeeper was attracting people in the fair.
      There was a shopkeeper who is attracting people in the fair.
 
11. Many things are in the fair to buy, but the boy holds on his promises.
      There were many things to buy in the fair, but the boy holds on his promises.