Hi There!!!
Here below, you can learn an easy explanation about
"There is" and "There are"
only for countable nouns.
First of all, let´s begin with...
We use “there is” for singular and
 
There is one table in the classroom.
 
There are three chairs in the classroom.
 
There is a spider in the bath.
 
There are many people at the bus stop.
 
The negative is formed by putting “not” after "is" or "are":
 
There is not a horse in the field.
 
There are not eight children in the school.
 
There is not a tree in the garden.
 
There are not two elephants in the zoo.
 
We almost always use contractions
 
The Negative contractions are:
 
There's not => There isn't
 
There are not => There aren't
 
When we want to indicate that two or more quantities of something exists we use “there are some”.
Examples:
There are some apples in the basket.
There are some seagulls at the beach.
 
When we want to indicate that a zero quantity of something
exists we use “there aren't any”.
 
There aren't any people at the party.
 
There aren't any trees in my street.
 
To form a question, we place "is" / "are" in front
of "there".
 
Again, we use "any" with plural questions.
 
Is there a dog in the garden?
 
Are there any dogs in the park?
 
Is there a shop assisstant in the shop?
 
Are there any polar bears in Antarctica?
 
Is there a car in the garage?
 
Short Answers
Yes, there is   ---   Yes, there are
No, there isn´t   ---   No, there aren´t
Look at the picture to have a better understanding of the explanation above.
Quiz
GAME
Copy the sentences in your notebook