Breakdown of Он то смеялся, то плакал за час до премьеры.
он
he / it (for a masculine noun) / it (for a neuter noun)
час
hour
смеяться
to laugh
до
before, until
Questions & Answers about Он то смеялся, то плакал за час до премьеры.
How does the phrase за час до премьеры work to mean an hour before the premiere?
This structure uses the preposition за plus the accusative case for the amount of time (час), followed by до plus the genitive case for the event (премьеры). This is the standard Russian way to express how much time elapses before an event takes place.
Why is the word то repeated before both verbs?
The repeated conjunction то ..., то ... is used to express alternating actions or states. In English, this is usually translated as first ..., then ... or one moment ..., the next .... Here, it vividly shows his mood swinging back and forth.
Why are the verbs смеялся and плакал in the imperfective aspect?
Because the alternating structure то ..., то ... describes repeated, ongoing actions rather than single, finished events. Using imperfective verbs emphasizes that he was continuously switching between laughing and crying during that time.
Since за takes the accusative case for time here, why does час look like it is in the nominative case?
The word час is an inanimate masculine noun. In Russian, the accusative form for inanimate masculine nouns is always identical to their nominative form, which is why its spelling does not change here.