In the south of Ireland, although "sinn" is used for "we" (rather than the "muid" used in the north), "we are" would be said "táimid". In fact the southern dialects tend to prefer inflected verb forms, such as "táim" and "táimid", while the further north you go the more analytical forms you will hear: "tá mé", "tá muid". (as far as I know, "tá sinn" isn't used anywhere, since the areas which use the word "sinn" also use the inflected form of the verb). The pronunciation of "á" ("a fada") also varies according to dialect, in the north it is similar to the "a" in English "hat", but held for longer.

Yes , the Munster dialect (South of Ireland) , but both are understood by all speakers . nowadays "muid" is more commonly used to mean "we" and "sinn" for "us" .

Thanks, Derek! Yeah, Maidhc mentioned 'tá sinn' being used in place of 'tá muid' in some dialects. By any chance, do you know which dialects those might be?

Well done Clare :) Maybe I will give you my little input on what you have learned . Yes there is a fada in "slán" . "á" is pronounced like the "aw" in the English words saw , paw , law etc . There is no letter "w" in Irish :( , "a" (without the fada) is pronounced like the "a" in the English words fat , hat , cat etc. So the fada in Irish just tells you how to pronounce the vowel , unlike English . Also strictly speaking "slán" actually means "safe" , so when you say slán , it's kinda like saying "take care of yourself" . There are three main dialects of Irish on this little island , "Tá mé" can be shortened to "Táim" , kinda like "I am" to "I'm" in English . "Tá muid" can also be said as "Tá sinn" . The others remain as they are . I suggest you stick with what you learned for now but just keep in mind there may be variations due to dialects . :P