Hi everyone, I'm currently teaching myself some basic but very important and commonly used verbs, such as the verb "to buy". Still being a total beginner, I'm rather confused right now as to which form of the verb is generally used. For instance, does one use the imperfective "kupovat" or the perfective "koupit" in the following sentences: "I want to buy bread": Chci koupit/kupovat chléb. "I buy the book": Kupuji/Koupím knihu. Anyone who can explain, please? Thanks.