Breakdown of Мы прождали рейс всё утро, но его отменили.
мы
we
его
him / it (acc)
но
but
рейс
flight (scheduled trip or route)
Questions & Answers about Мы прождали рейс всё утро, но его отменили.
Why use the perfective прождали instead of just saying ждали for a continuous action like waiting all morning?
The prefix про- turns the verb perfective to emphasize that the action filled a specific, completed block of time. You could grammatically use the imperfective ждали here to simply state the process, but прождали stresses the completion of that entire, often frustrating, duration (всё утро).
Why doesn't the time phrase всё утро have a preposition to show duration?
To express how long an action lasts, Russian uses the accusative case without any preposition (the Accusative of Time). Because утро is a neuter noun, its accusative form looks exactly the same as the nominative dictionary form.
Why is его used to mean 'it' in the second half of the sentence?
Его is the accusative form of the masculine pronoun он. It refers back to рейс (flight), which is a masculine noun. Even though a flight is an inanimate 'it' in English, Russian pronouns must match the grammatical gender of the noun they replace.
Why is отменили (canceled) in the plural 'they' form if the subject isn't specified?
Russian often uses the 3rd person plural past tense without the pronoun они (they) to create an impersonal sentence. This is the standard way to express the English passive voice when the person doing the action is unknown or unimportant, smoothly translating to 'it was canceled' or 'they canceled it.'