Questions & Answers about Актёр уже вышел из зала.
Why does the verb вышел look so different from its infinitive выйти?
Verbs of motion based on идти (to go on foot) have irregular past tense forms. Just like идти becomes шёл (masculine) or шла (feminine), the prefixed verb выйти (to exit) becomes вышел or вышла in the past tense. Since Актёр is masculine, we use вышел.
Why use the perfective verb вышел instead of the imperfective выходил?
The word уже (already) gives a big hint here! The action is completely finished, and the result is relevant right now: the actor is no longer in the hall. For completed, one-time actions with a lasting result, we use the perfective aspect.
Why use the preposition из here instead of от or с?
In Russian, prefixes on verbs of motion often pair with specific prepositions. The prefix вы- (out) almost always pairs with the preposition из (out of). If the actor were going into the hall, we would pair the prefix в- with the preposition в (вошёл в зал).
Why is the word for hall spelled зала instead of зал?