Learn Turkish: Bir yılda on iki ay var. - There are twelve months in a year.

In Turkish, when you use a specific number before a noun (like on iki), the noun always stays in the singular form. So, instead of saying "twelve months", you literally say "twelve month" (on iki ay).

How does Bir yılda translate to "in a year"?

The word yıl means "year". The suffix -da is the locative case suffix, which translates to "in", "on", or "at". Adding bir (a/one) at the beginning gives us Bir yılda (In a year / In one year).

Where is the verb "are" in this sentence?

Turkish doesn't use a verb like "are" to say "there is" or "there are". Instead, it puts the word var (existent / there is) at the very end of the sentence. Literally, the sentence is structured as "In a year, twelve month exists."

Could I use sene instead of yıl here?

Yes! Sene is another very common word for "year". You will often hear people say Bir senede on iki ay var, which means exactly the same thing.