Breakdown of دانشجوی شیمی گاز را ندیده بود.
دانشجوdâneshju
university student
بودنbudan
to be
دیدنdidan
to see / to watch
راrâ
definite direct object marker
Questions & Answers about دانشجوی شیمی گاز را ندیده بود.
Why is the verb ندیده بود instead of just ندید?
ندید is the simple past tense meaning "did not see". Here we need the past perfect tense ("had not seen"). In Farsi, you build this by taking the past participle دیده (seen), adding the negative prefix نـ to make ندیده, and combining it with the past tense of "to be", which is بود.
Why is there a ی added to دانشجو?
To connect "student" and "chemistry" into "chemistry student", Farsi uses the Ezafe linking sound. Since دانشجو ends in a long vowel (the "u" sound), the Ezafe is pronounced "-ye" and must be written with the letter ی.
What is the purpose of را after گاز?
را is the specific direct object marker. Because the sentence says the student had not seen "the gas" (a specific thing) rather than just "gas" in general, را is required right after گاز.