There + to be

Singular

Affirmative

There is a bus on the street.

There is an armchair in the living room.

Negative

There isn't a cat in the classroom.

There isn't an elevator in the building.

There's no bed in the bathroom.

Interrogative

Is there a rabbit in the hat?

Is there an orange in the basket?

Plural

Affirmative

There are some students in the classroom.

There are two cars in the garage.

Negative

There aren't any books on the desk.

There are no eggs in the grocery store.

Interrogative

Are there any shelves on the walls?

Uncountable Nouns

Affirmative

There is some milk in the bottle.

Negative

There isn't any medicine in the drawer.

Interrogative

Is there any water in the cup?