There is – There are – There will be

In English when we want to say that one thing or person exists or is present, we use There Be and its singular and plural forms. Use there be as follows: There is for singular and non-countable nouns. There are for plural and countable nouns. Use there will be to express the future existence of something or the future happening of an event. Sentences using there is, there are or there will be, are often accompanied by the words “some” and “any” to quantify the noun. The word “some” is used in affirmative sentences, affirmative answers and offering questions. The word “any” is used in questions,  negative answers and when making negative sentences that have a noun that needs to be quantified.

There is = singular and non-countable nouns.
There are = plural and countable nouns.
There will be = future existence or future happening of an event.

Statement:
There is some water in the glass. 
Question:
Is there any water in the glass? 
Affirmative Answer:
Yes, there is some water in the glass. 
Negative Answer:
No, there isn’t any water in the glass. 
Statement:
There are some students in the classroom right now. 
Question:
Are there any students in the classroom right now? 
Affirmative Answer:
Yes, there are some students in the classroom right now. 
Negative Answer:
No, there aren’t any students in the classroom right now. 
Statement:
There is a teacher in the classroom. 
  Question:
Is there a teacher in the classroom? 
Affirmative Answer:
Yes, there is a teacher in the classroom.
Negative Answer:
No, there isn’t a teacher in the classroom. 
  Statement:
There are five students in the classroom.
Question:
Are there five students in the classroom? 
Affirmative Answer:
Yes, there are five students in the classroom. 
Negative Answer:
No, there aren’t five students in the classroom. 
Statement:
There will be an excellent party next weekend. 
Question:
Will there be an excellent party next weekend? 
Affirmative Answer:
Yes, there will be an excellent party next weekend. 
Negative Answer:
No, there won’t be an excellent party next weekend. 

We also use “some” and “any” when we make a question utilizing the auxiliaries “do-does”

Question: Do you have any friends in Ecuador? 
Affirmative Answer: Yes, I have some friends in Ecuador. 
Negative Answer: No, I don’t have any friends in Ecuador. 

Question: Does she have any relatives in the U.S.A.? 
Affirmative Answer: Yes, she has some relatives in the U.S.A. 
Negative Answer: No, she doesn’t have any relatives in the U.S.A. 

Use “some” in offering Questions.

Offering question: Do you want some candy? (offering Question) 
Offering question: Do you want some money? (offering Question)