Breakdown of آنها در مورد این سمینار تخصصی هیچچیز نمیدانند.
آنها
they
این
this
هیچچیزhich chiz
nothing
در موردdar mored
about / regarding
Questions & Answers about آنها در مورد این سمینار تخصصی هیچچیز نمیدانند.
How does the preposition در مورد connect to the rest of the phrase, and could I use راجع به instead?
در مورد (dar moured-e) means "about" or "regarding". It connects to the following word (این) using the ezafe vowel (an "e" sound). You could absolutely swap it for راجع به (râje' be) without changing the meaning, though در مورد sounds slightly more formal, which fits the context of a specialized seminar perfectly.
Why is the verb نمیدانند negative when the English translation simply says "know nothing"?
Farsi requires double negatives. Whenever you use a negative pronoun like هیچچیز (hich-chiz, meaning "nothing" or "not anything"), the main verb must also be negative. Literally, the Farsi sentence translates to "They don't know nothing."
Why is the phrase در مورد این سمینار تخصصی placed before هیچچیز?
Farsi generally follows a Subject-Object-Verb word order. The subject آنها (they) comes first. Prepositional phrases (like the one starting with در مورد) typically come after the subject and before the direct object هیچچیز (nothing), followed by the verb at the very end.
How is the adjective تخصصی (specialized) formed here?
It comes from the noun تخصص (takhasos), which means "specialty" or "expertise". By adding the ی (i) suffix, it transforms into an adjective meaning "specialized". It is linked to the noun it describes using an ezafe: (seminâr-e takhasosi).