"We need a new sofa already!"
Translation:Už potřebujeme novou pohovku!
What kind of sentence that it can be placed at the end and what kind of sentence it can be put at top?
I do not understand "at top".
But there are these examples:
Bude to už? Will it be finished/ready (already)?
Ticho už! Be silent (already)!
Ale už! disagreement, if you want to stop someones continuing misbehaving