Questions & Answers about این لکهی چسبناک باید مربا بوده باشد.
Why is the verb "bude bâshad" used here instead of a regular past tense?
This sentence makes a logical guess about the past ("must have been"). In Farsi, to express past deduction, you use bâyad (must) followed by the Present Perfect Subjunctive of the main verb. Since the main verb here is "to be", we use its subjunctive form bude bâshad.
How exactly is the verb form bude bâshad put together?
The Present Perfect Subjunctive is built using the past participle of the main verb plus the present subjunctive of budan. For the verb budan (to be) itself, the past participle is bude. We then add bâshad (the third-person singular present subjunctive of budan). So, you literally combine bude with bâshad.
The word for "sticky" is chasbnâk. Is -nâk a common suffix?
Yes, -nâk is a very common suffix used to turn a noun or a verb stem into an adjective, usually meaning "full of" or "characterized by". Here it is added to the root of chasbidan (to stick). You have likely seen it in words like tarsnâk (scary) or dardnâk (painful).
Why does lake (stain) have a -ye ending in this sentence?
This is the ezâfe connecting the noun lake to its adjective chasbnâk (sticky). Because lake ends in a silent "h" that makes an "e" sound, we must add a to make the pronunciation smooth, resulting in .