Questions & Answers about Kennarinn talar mikið núna.
Why does the verb tala become talar here, and what would it be if we said "the teachers speak"?
Tala is a Group 1 weak verb. In the present tense, these verbs take an -r ending for "you", "he", "she", and "it". Since kennarinn (the teacher) acts as a "he" or "she", we use talar. If the subject were plural like "the teachers", Group 1 verbs in the third person look exactly like their dictionary form, so it would be kennararnir tala.
Why does kennarinn end in -inn?
In Icelandic, the word for "the" is usually attached to the end of the noun. The base word for "teacher" is kennari, which is a masculine noun. To say "the teacher", we add the masculine definite article. Since kennari already ends in a vowel, we just add -nn to the end, giving us kennarinn.
Can I use margir instead of mikið to mean "a lot" here?
No, because margir means "many" and is strictly used for things you can individually count, like margir kennarar (many teachers). Mikið means "much" or "a lot" and is used for uncountable things or, as in this sentence, to describe how much an action is happening (speaking a lot).
Both nú and núna mean "now". Why use núna here?
While both mean "now", núna specifically emphasizes "right now" or "at this very moment". This fits perfectly because the teacher is actively talking a lot at this exact time. Nú is a bit less specific and is also frequently used as a conversation filler word, similar to "well..." or "so..." in English.