1)There is a big black board in the classroom
Is there a big black board in the classroom?
There isn’t a big black board in the classroom
2)There was a big black board in the classroom
Was there a big black board in the classroom?
There wasn’t a big black board in the classroom
3)There will a big black board in the classroom
Will there a big black board in the classroom?
There won’t a big black board in the classroom
P.S. isn’t-is not
wasn’t-was not
won’t-will not