There is a dog under the table.
There isn't a dog under the table.
Is there a dog under the table?
Yes,there is./No,there isn't.
How many dogs are there under the table?
There are 26 people in our class.
There aren't 26 people in our class.
Are there 26 people in your class?
Yes,there are./No,there aren't.
How many people are there in your class?
There are three people under the tree.
There aren't three people under the tree.
Are there three people under the tree?
Yes,there are./No,there aren't.
How many people are there under the tree?
There are three pens on the table.
There aren't three pens on the table.
Are there three pens on the table?
Yes,there are./No,there aren't.
How many pens are there on the table?
I have an English book.
I don't have an English book.
Do you have an English book?
Yes,I do./No,I don't.
How many English books do you have?