It was mentioned previously that the case into which we change a noun depends on the verb. For example, the verb duoti (to give) changes a noun into the accusative case:

Aš duodu pieštuką. I give a pencil.
Mes duodame kėdę ir kambarį, bet jūs duodate sąsiuvinius. We give a chair and a room, but you give exercise-books.

Let's see some new verbs:

imti - to take
gauti - to get
pirkti - to buy

Their present tense 3rd person (jis, ji, jie, jos) are ima, gauna and perka respectively (ending in a just like duoda).

Notice that gauna and perka are not made by dropping the ti of gauti and pirkti. Unfortunately, this is where you must use your memory. You must know both forms gauti and gauna, pirkti and perka by heart.

Let's use some objects with these new verbs:

Aš duodu pieštuką, jis ima pieštuką, ji gauna pieštuką. I give the pencil, he takes the pencil, she gets the pencil.
Mes imame knygą. We take a book.
Jie perka stalą, kompiuterį ir kėdę, bet ne televizorių. They are buying a table, a computer and a chair, but not a TV.
Kodėl jūs imate langą? Why are you taking the window?
Kada aš gaunu kilimus? When am I getting carpets?
Ar imi laikrodį? Do you take the clock?

Do you notice something very important? All these verbs are transforming their object into the accusative case! So the next thing to memorize about these verbs is that they require the accusative case.