Learn Farsi: صاحب‌خانه ودیعه را گرفته است.

It is made by combining the past participle گرفته (taken) with است (is). To make the past participle, take the past stem of the verb گرفتن (to take) — which is گرفت — and add an -e sound to the end, written with the silent letter ه.

Why does the third-person singular use است instead of a short ending like the other forms?

In the present perfect tense, most pronouns use a short ending attached to the past participle (like -am for "I" or -im for "we"). However, for the third-person singular ("he", "she", or "it"), standard Farsi uses the full, separate word است after the past participle rather than a short suffix.

Why do we need the word را after ودیعه?

را is the specific direct object marker. It tells us that ودیعه (deposit) is the specific thing receiving the action of being taken. Since we are talking about "the" deposit (a specific one) rather than "a" deposit in general, we must use را.

How does the word صاحب‌خانه translate to "landlord"?

It is a compound noun made of two separate parts: صاحب (owner or master) and خانه (house). Put together, it literally means "house owner," which is how Farsi expresses "landlord."