Learn Finnish: Eikö elokuva ollut uskomaton? - Wasn't the movie unbelievable?

Eikö is made of the negative verb ei (is not) and the question ending -kö. When you want to ask a negative yes/no question like "Didn't...?" or "Wasn't...?", you attach -ko or -kö directly to the negative verb. Because ei is the 3rd person singular form, it matches "the movie".

Why do we use ollut instead of the regular past tense oli?

In Finnish, negative past tense sentences don't use the regular past tense verb like oli. Instead, they use the negative verb (ei) plus the past participle form of the main verb, which usually ends in -nut or -lut. For the verb olla (to be), that form is ollut. So "was not" is ei ollut, and the question "wasn't?" becomes eikö ... ollut?.

Why is the subject elokuva placed between Eikö and ollut?

In Finnish questions, the word with the question ending (-ko/-kö) must come first. The subject (elokuva) usually follows right after it to show what the question is about. The main verb (ollut) then comes after the subject, wrapping around it in a very similar way to the English structure "Wasn't the movie...".

How is the word uskomaton built?