Learn Hardcore Romanian: Biblioteca este închisă noaptea.

Because bibliotecă means “a library” or just the concept of a library (indefinite), while Biblioteca is the definite form, “the library.” In Romanian, the article is attached to the end of the noun.

Why do we use este instead of e?

Este is the full, formal form of the verb “to be” in the present tense. E is the colloquial contraction you’d hear in speech or informal writing. In standard or written Romanian, you’ll usually see este, though you could say Biblioteca e închisă noaptea in casual conversation.

Why does închisă end with -ă?

Închisă is the past participle of a închide (“to close”) used as an adjective. Romanian participles and adjectives agree in gender and number with the noun they describe. Biblioteca is feminine singular, so the adjective/participle also takes the feminine singular ending -ă. For a masculine noun you’d say închis, and for plural închise (fem.) or închiși (masc.).

What does noaptea literally mean and why is it used for “at night”?

Noaptea is the definite form of noapte (“night”), literally “the night.” When used adverbially it means “at night.” Romanian often uses the definite noun in place of an English time adverbial, so noaptea = “at night.”

Is Biblioteca este închisă noaptea a passive construction?

It’s more of a stative or descriptive use of the past participle. While it looks like passive voice (“is closed”), it simply states the condition or state of the library (“the library is closed”). It doesn’t emphasize who closed it.

Could I say Biblioteca se închide noaptea instead?

Yes, but that changes the meaning slightly. Biblioteca se închide noaptea means “the library closes at night” (describing the action or schedule). Este închisă describes its state (“is closed”).

Can I move noaptea to the front: Noaptea biblioteca este închisă?

Yes, that’s grammatically correct and puts emphasis on “at night.” However, the neutral, unmarked word order in Romanian is Biblioteca este închisă noaptea.

How do I pronounce Biblioteca este închisă noaptea?

The stress in Romanian usually falls on the penultimate syllable:

bi-bli-o-TE-ca
es-TE
în-CHI-să
nop-TE-a
Also, â in închisă is a central vowel sound (similar to Romanian “î”).