Dia duit!
Apologies if this is a daft question - I've very much a beginner with the Irish language (less than 2 months!) but loving it. Recently I've come across a few instances of use of the word 'fós' that have left me a little bit confused. They are:
Cén fáth an bhfuil tú fós sa bhaile? - meaning 'why are you still at home?'
and
Cén fáth nach bhfuil sé sa bhaile fós? - meaning 'why isn't he at home yet?'
I have seen other examples of 'fós' used after the noun, so I was a bit surprised by the sentence construction in the first example, but it seems the meaning is slightly different.
I'm guessing that the difference is that 'fós' used after the noun means 'yet' and before the noun is like the older English use of 'yet' (I've seen it sometimes in Shakespeare) where we would tend to use 'still' in modern usage. This would make sense to me, but I don't want to get this idea in my head as a rule if I'm getting it completely wrong!
I have searched online and I can't find an answer to this question, so if anyone out there can help me I would be hugely grateful

.
Many thanks!
Sarah