I have some plants.（改为一般疑问句）
Do you have any plants?
We have a big TV in our house.（改为否定句）
We don't have a big TV in our house.
He has a tennis racket.(改为一般疑问句）
Does he have a tennis racket?
They play sports every morning.（改为一般疑问句）
Do they play sports every morning?