Question

You have some ice cream in there
You have something that smells very good
I have a lovely boyfriend
They have a big elephant in the zoo
You have that colour in your backpack
They have some rice in that place
en negativo

Answer 1

You have some ice cream in there. 
       You don´t have any ice cream in there.  

You have something that smells very good 
    You don´t have anything that smells good.
    You have nothing that smells good.
    You have something that smells very nasty. 

I have a lovely boyfriend 
    You don´t have a lovely boyfriend.
    You have an unpleasant boyfriend.     

They have a big elephant in the zoo 
    They don´t have a big elephant in the zoo.
    They have a small elephant in the zoo. 

You have that colour in your backpack 
    You don´t have that colour in your backpack.

They have some rice in that place 
     They don´t have any rice in that plate.
     They have no rice in that plate. 
      Their plate is empty.