There are beers in the restaurant. = V restauraci jsou piva.
There are beers on the table. = Na stole jsou piva.
There are beers in my hand. = V mojí ruce jsou piva.

There are teachers at school. = Ve škole jsou učitelé.
There are teachers in the room. = V pokoji/místnosti jsou učitelé.
There are teachers in the classroom. = Ve třídě jsou učitelé.

There are rooms in the house. = V domě jsou pokoje.
There are two rooms in the house. = V domě jsou dva pokoje.
There are rooms in the flat. = V bytě jsou pokoje.

Are there beers on the table? = Jsou na stole piva?
Are there teachers at school? = Jsou ve škole učitelé?
Are there rooms in the house? = Jsou v domě pokoje?