​There are only two forms when you want to say that something exists or that some things exist:

​Present Simple: There + To Be

​Present Simple: There + To Be

​Affirmative:

- There is a pineapple in the picture.

- There are two bananas in the basket.

​Present Simple: There + To Be

​Negative:

- There isn't a pear in the fruit basket.

- There aren't any vegetables in the picture.

​Present Simple: There + To Be

​Interrogative:

- Is there a green melon in the fruit basket?
Yes, there is.

- Are there four kiwis?
No, there aren't.