Breakdown of В музей нельзя входить с напитком.
музей
museum
в
in / to (direction)
с
with (also со)
нельзя
one must not
Questions & Answers about В музей нельзя входить с напитком.
Why isn't there a word for "you" in the Russian sentence?
Words like нельзя (not allowed) and можно (allowed/possible) are impersonal. They describe the general rule ("entering is not allowed") rather than directing it at a specific person. If you wanted to specify "you," you would use the Dative case: вам нельзя or тебе нельзя.
Why is it в музей instead of в музее?
Because of the verb входить (to enter). Even though the English translation says "in the museum," you are moving into a destination. This requires the Accusative case (в музей). If you were just doing an action while already inside, you would use the Prepositional case for location (в музее).
Why does нельзя pair with the imperfective verb входить here instead of the perfective войти?
When нельзя is used to express a strict prohibition ("it is not allowed" or "one must not"), it almost always takes an imperfective verb. Using the imperfective focuses on the action itself being forbidden at all times.
What happened to the spelling of the word напиток (beverage) here?