THERE IS - THERE ARE
We use there is and there are to say that something exists.
Positive Sentences
We use there is for singular and there are for plural:
There is one table in the classroom.
There are three chairs in the classroom.
There is a spider in the bath.
We also use There is with uncountable nouns:
There is some milk in the fridge.
There is some sugar on the table.
There is some ice cream on your shirt.
Contractions
The contraction of there is is there's:
There's a good song on the radio.
There's only one chocolate left in the box.
You cannot contract there are:
There are nine cats on the roof.
There are only five weeks until my birthday.
Negative Form
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.
The Negative contractions are:
There's not = There isn't
There are not = There aren't
Questions
To form a question we place is / are in front of there:
Is there a dog in the supermarket? - No, there isn't.
Are there any dogs in the park? - Yes, there are.
Is there a security guard in the shop? - Yes, there is.