Translation:Nach bhfuil tú?
In all of these sentences comparing two people--I'm not available, but he is I am, but are you? srl., I've wanted to use emphatic forms. I don't know if that's correct (Ní Gaeilgeoir mé!), but I finally put one in a translation sentence.
For Aren't you?, I wrote Nach bhfuil tusa?, and got the tusa marked wrong. Can anyone tell me why tú is correct but tusa is wrong? If it's a case of That's just how it's said, that's an okay answer, too!