Breakdown of آکواریومی که کوسه‌ها در آن زندگی می‌کنند، خیلی بزرگ است.
است
is
خیلی
very / many (of)
آن
that
بزرگbozorg
big / large
Questions & Answers about آکواریومی که کوسه‌ها در آن زندگی می‌کنند، خیلی بزرگ است.
Why does the sentence say در آن (in it) when the English translation is just 'that the sharks live in'?
In Farsi, when a relative clause describes a place or object using a preposition (like 'in', 'on', or 'with'), you must keep the pronoun inside the clause. This is why Farsi literally says 'The aquarium that the sharks live in it' (در آن) instead of leaving the preposition hanging at the end of the phrase like we do in English.
Why is there an extra ی at the end of آکواریومی?
This is the relative ی (often called the restrictive 'i'). It attaches to the noun being described (آکواریوم) right before the word که (that) to signal that a specific descriptive clause is about to follow. It acts like a pointer saying, 'I am about to tell you exactly which aquarium I mean!'
The noun 'aquarium' is singular, so why is the verb زندگی می‌کنند plural?
The sentence actually has two verbs because it has two separate parts. زندگی می‌کنند (they live) belongs to the inner descriptive clause and matches its plural subject, کوسه‌ها (the sharks). The verb for the main subject ('the aquarium') is است (is), which is singular and correctly placed at the very end of the sentence.
Why is خیلی بزرگ است (is very big) pushed all the way to the end?
Farsi usually places verbs at the end of their respective clauses. The main core of this sentence is 'The aquarium is very big' (آکواریوم خیلی بزرگ است). The relative clause 'that the sharks live in it' (که کوسه‌ها در آن زندگی می‌کنند) is inserted right after the noun it describes. This interrupts the main sentence, pushing the final 'is' to the very end of the line.