why do we pronounce the letter Y at the end of the letter Tau like F but not like EE?
When Υ is added after an Α or E , it is pronounced as F , (or sometimes as V) . Additionally , when Υ placed after an O , all together is pronounced OU. In greek , letters y and u are exactly the same, and Y is the capital letter.
Why is the modern Greek letter "T" pronounced "taf" but spelled "Ταυ" and not "Ταφ"? Is "Ταυ" how it is spelled in Greece today?
αυ/αύ is "af" and ευ/εύ is "ef" when: they are followed by a voiceless consonant θ, κ, ξ, π, σ, τ, φ, χ, ψ or nothing e.g. αυτό [afto] (this), εύκολος [efkolos] (easy), ταυ [taf] (tau - the 19th letter of the Greek alphabet), ευ [ef] (well [archaic]).
Otherwise av, ev, that is before vocals and sounding consonants: αύριο [άvrιο] (tomorrow), Ευρώπη [Evrόpι] (Europe)
Why is 'u' in tau pronounced "f" when it is pronounced "ee" for every other word?
Not every other word... for instance the Greek word ευχαριστώ, meaning thank you, is pronounced something like "efkaristo"