There is ....on the table.There are....on the table. Is there....on the table?Are there....on tne table?There is no....on

There is an elephant on the table.

There are cats on the table.

Is there a penguin on the table?

Are there cats on the table?

There is no dog on the table.

There are no cats on the table.

We have only one word from the list given above that has a plural form - cats. Other words have singular form. So we put the word \"cats\" when we see the plural form of the verb \"to be\"  - are.