1.There is a TV on the table.
There isn't a TV on the table.
a brown dog/the kitchen
There is a brown dog in the kitchen.
There isn't a brown dog in the kitchen.
3.
a boy/the cupboard
There is a boy in front of the cupboard.
There isn't a boy in front of the cupboard.
4.
a bath/the bathroom
There is a bath in the bathroom.
There isn't a bath in the bathroom.
5.
lamps/the bedroom
There are lamps in the bedroom.
There aren't lamps in the bedroom..