There is and there are

Use there is to introduce one thing or an uncountable amount: There is a café nearby. There is some water. Use there are with plural nouns: There are two windows in the room.

For negatives, add not after be: There isn't a problem. There aren't any tickets. For questions, move be before there: Is there a bank here? Are there any questions?

Use some mainly in affirmative sentences and any in most questions and negatives. There is and there are express existence; use have or has when a person or thing possesses something.