There is/there are a cat in the box.
There is
Pointing to your phone in your hand: “What do you say?”
This is my phone
Complete: “I’m ____ school.”
at
There is/there are two apples on the table.”
There are
Pointing to a car far away: “What do you say?”
That is a car.
Complete: “The cat is ____ the box.”
in
Make a question: There is a book on the chair.
Is there a book on the chair?
Pointing to shoes you are wearing: “What do you say?”
These are my shoes
Complete: “The picture is ____ the wall.”
on
Correct the mistake: “There are a pen in my bag.”
There is a pen in my bag.
Correct the mistake: “Those is my books.”
Those are my books.
Correct the mistake: “She is in the bus stop.”
She is at the bus stop.