Kas, ko, kam, ką, kuo, kame

Kas, as taught in one earlier lesson, means who or what:

Kas jis yra? Who is he?
Kas tu esi? Who are you?
Kas skambina? Who is calling?

But kas has cases too. They look exactly like tas (that):

Nominative case:
Genitive case (of):
Dative case (to/for):
Accusative case:
Instrumental case (using):
Locative case (in):

Nominative case:
Genitive case (of):
Dative case (to/for):
Accusative case:
Instrumental case (using):
Locative case (in):

kas
ko
kam

kuo
kame







tas
to
tam

tuo
tame

tie

tiems
tuos
tais
tuose

ta
tos
tai

ta
toje

tos

toms
tas
tomis
tose

Do you see that kas doesn't have feminine (ta) and plural (tie, tos) forms? This means that the same forms are used for feminine and plural words.

Kas eina? Ta mergaitė eina. Who goes? That girl goes.
Ko reikia? Reikia pieštuko. What is needed? A pencil is needed.
Kam patinka šitas autobusas? To whom appeals this bus?
Ką perki? Perku traukinį. What are you buying? I am buying a train.
Kuo važiuoji į Lietuvą? Į Lietuvą važiuoju traukiniu. By what are you going to Lithuania? To
Lithuania I am going by train.
Kame yra mano knyga? In what is my book?

Kame is usually changed by kur:

Kur yra jos knyga? Where is her book?
Kur eini? Where are you going?

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