Questions & Answers about Мои друзья говорят громко.
What case is мои друзья in?
Мои друзья is in the nominative case, which is used for the subject of a sentence. Here it marks who is doing the action (speaking loudly).
Why is it not мой друзья?
Because друзья (‘friends’) is plural, the possessive pronoun must also be plural: мои. Мой is the masculine singular form and doesn’t agree with the plural noun.
What part of speech is говорят?
Говорят is a verb, specifically the 3rd person plural present tense form of говорить (to speak, to talk).
What part of speech is громко?
Громко is an adverb (наречие). It modifies the verb говорят and answers the question “how?” (in this case, “loudly”).
How is громко formed from громкий?
Adverbs of manner are often formed from adjectives by replacing the adjective ending -ий with -о. So громкий (loud) → громко (loudly).