kaupa

In a sentence

• Ég kaupi brauð í bakaríinu.

  I buy bread at the bakery.

  In this sentence, 'kaupi' is the first-person singular present indicative form of the verb 'kaupa', used here to express an action currently being performed by the speaker, specifically buying.

• Hún keypti nýjan bíl.

  She bought a new car.

  Here, 'keypti' is the third-person singular past indicative form of the verb 'kaupa', denoting an action completed in the past.

• Við ætlum að kaupa hús á næsta ári.

  We are going to buy a house next year.

  In this instance, 'kaupa' is in its infinitive form, used in combination with 'ætla' (meaning 'going to') to indicate a planned future action of buying.