Ceacht 6:
cá? 	where?	inter adv [IA]	
an	the	def art sing.	
cá bhfuil mé? 	where am I?	[IA] + [pres dep v #ecl.#]+ [sing. pron]	
cá bhfuil tú?	where are you? 	ditto	
cá bhfuil sé?	where is he (it)?	ditto	
cá bhfuil sí?	Where is she (it)?	ditto	
cá bhfuil Séan?	where is Séan?	[IA]+[pres. dep. v]+[proper n]	
cá bhfuil an -?	where is the -?	[IA]+[pres dep v] +[art]	
daidí	daddy	n m4	
mamaí	mammy	n f4	
an fear	the man	n m1	
an bhean	the woman	n f5 # len.#	
an buachaill	the boy	n m3	
an cailín	the girl	n m4	
ea	it	neuter pron 	
is ea	it is	[copula]+[neuter pron]	
an ea?	is it?	interr neuter pron	
ní hea	no, it isn't	neg neuter pron  # prefix #	
sa chistin	in the kitchen	[prep.pron(=i+an)]=[n f2#len.#]	
thuas an staighre	upstairs	[adv]+[art]+[n m4]	

Cá? - where? - This little word causes eclipsis of a following verb.  See the table at the back of Buntús Cainte Book Two for the effect of lenition on a consonant.

The Noun:  All nouns in Irish are either masculine or feminine.  Most Irish dictionaries will give you the gender, so it's not really important at this stage of our studies to know how to determine the gender of a noun as long as you accept that it falls into one of the two genders.  The initial consonant of the noun can be lenited following the definite article singular.

The Article:  In Irish, there is no indefinite article equivalent to the English a or an.  There is only a definite article equivalent to the English the, which you can see on p16 of Book One.  So the Irish word buachaill can mean either boy or a boy, but if we want to say the boy we use the definite article and say an buachaill