Questions & Answers about У нас пересадка, ждать часа четыре.
Why is it часа четыре instead of the normal четыре часа?
Reversing the normal order of a noun and a number is a very common way to express approximation in Russian. While четыре часа means exactly "four hours," putting the noun first as часа четыре changes the meaning to "about four hours."
Since we are talking about multiple hours, why is it часа instead of a plural form like часов?
Even though the order is flipped for approximation, the basic grammar rule for numbers still applies. The numbers 2, 3, and 4 require the noun to be in the genitive singular. So, the dictionary form час becomes часа.
Why is ждать (to wait) just left in the infinitive here?
Using an infinitive on its own is a common way to express a general necessity, inevitability, or the current state of things. Here, ждать simply implies "there is a wait" or "we have to wait," without needing to use extra words like нам надо (we need to).
How does the word пересадка mean "transfer"?
Пересадка is built from the prefix пере- (which often means across or re-) and the root from садиться (to sit or take a seat). It literally describes "re-seating" yourself from one train, bus, or plane to another, making it the perfect word for a transfer or layover.