Надо на писать 2 примера на

1) There is ...

There are ...

2) There isn't ...

There aren't ...

3) Is there ... ?

Are there ... ?

There is a book on the table/

there are many trees in the street.

There isn't a computer on the table

There aren't people in the street.

Is there a cat in the room?

Are there dogs in the street?

Можно вставить любые др. существительные в ед или мн. числе

1) There is a chair.

There are three chairs.

2) There isn't any lamp.

There aren't any lamps.

3) Is there a sofa?

Are there some sofas?