For Japanese learners of English, singular (単数) vs plural (複数) is a little challenging sometimes.
Let's study a little!
There is an apple on the table. (singular 単数)
There are apples on the table. (plural (複数)
Example dialogue :
What's on the table?
There is an apple on the table.
What's on the table?
There are apples on the table.
How many apples are there on the table?
There are five apples on the table.
Good! There is one apple for each person.