Questions & Answers about Moji prijatelji uče engleski zajedno.
In Croatian, adjectives (including possessive adjectives) must agree with the noun they modify in gender, number, and case. Here:
• prijatelji is masculine animate, plural, nominative (subject form).
• moji is the masculine animate, plural, nominative form of the possessive adjective moj (“my”).
Together they form a grammatically coherent noun phrase: moji prijatelji (“my friends”) in the nominative case.
uče is the third person plural present tense form of the verb učiti (“to learn” / “to study”). The full present tense conjugation is:
• ja učim
• ti učiš
• on/ona/ono uči
• mi učimo
• vi učite
• oni/one/ona uče
Since moji prijatelji refers to “they,” you use the oni/one/ona form uče to match the plural subject.