Learn Farsi: در این دما، دانه‌ها خیلی سریع برشته می‌شوند. - At this temperature, the beans are roasted very fast.

To form the present passive voice, Farsi uses the past participle of the main verb—here, برشته (roasted)—followed by the present tense of شدن (to become). Because the subject دانه‌ها (the beans) is plural, we use the 'they' form: می‌شوند. Literally, the phrase translates to 'they become roasted'.

Why do we use در (in) at the start of the sentence instead of a word for 'at'?

While English speakers say 'at a temperature', Farsi uses در (in) to express being in a certain temperature, state, or condition. So در این دما literally means 'in this temperature'.

Doesn't دانه usually mean 'seed'? Why is it translated as 'beans' here?

Yes, دانه refers generally to seeds, grains, or kernels. When talking about roasting (برشته), it usually refers to coffee beans, cocoa beans, or nuts. The suffix ها makes it plural (دانه‌ها).

Why is خیلی سریع (very fast) placed where it is in the sentence?

In Farsi, adverbs describing how an action is done (adverbs of manner) usually go right before the verb. Here, خیلی سریع sits directly before the passive verb phrase برشته می‌شوند.