Question 1

Why do we use Al anochecer + infinitive here?

Accepted Answer

Al + infinitive expresses that two actions happen simultaneously. Al anochecer literally means “upon nightfall” or “when it gets dark.” It’s a concise way to set the time frame for the main action (turning off the light).

Question 2

Can I say Cuando anochece instead of Al anochecer?

Accepted Answer

Yes. Cuando anochece also means “when it gets dark,” but it uses cuando + a conjugated verb. Al anochecer (with the infinitive) is more idiomatic for narrating events or routines. Both are correct, though Cuando anochece can feel a bit more conversational.

Question 3

What’s the difference between anochecer and atardecer?

Accepted Answer

- Atardecer refers to the late afternoon or sunset (“dusk”).  
- Anochecer refers to the moment it becomes dark (“nightfall”).

They mark different stages in the day-to-night transition.

Question 4

Why is apagamos in the preterite tense rather than the imperfect?

Accepted Answer

The preterite (apagamos) describes a completed action at a specific point in the past—here, the precise moment of nightfall. The imperfect would suggest an ongoing or habitual background action, which isn’t the focus.

Question 5

Why don’t we include the subject pronoun nosotros?

Accepted Answer

Spanish often drops subject pronouns because the verb ending (-amos) already indicates “we.” Adding nosotros would be grammatically correct but redundant unless you want emphasis.

Question 6

Why does antes de require an infinitive like dormir?

Accepted Answer

After prepositions (including antes de), Spanish uses the infinitive. So antes de dormir means “before sleeping.” Using a conjugated form (e.g., antes de dormimos) would be incorrect.

Question 7

Could I say antes de acostarnos instead of antes de dormir?

Accepted Answer

Yes. Acostarnos is the infinitive of the reflexive verb acostarse (“to go to bed”).  
- Antes de acostarnos emphasizes “before going to bed.”  
- Antes de dormir emphasizes “before falling asleep.”  
Both are grammatically correct and commonly used.

Question 8

Why la luz de la sala rather than luz en la sala?

Accepted Answer

- La luz de la sala implies “the light that belongs to/comes from the living room,” focusing on that specific fixture.  
- La luz en la sala simply means “the light in the living room,” which is also acceptable but slightly less specific about ownership.

Question 9

In Latin America, does sala mean the same as salón?

Accepted Answer

Generally yes. In Latin American Spanish, sala is the common term for “living room” or “family room.” In Spain, you might more often hear salón, but both words refer to the main reception or living area.

Al anochecer apagamos la luz de la sala antes de dormir.

Breakdown of Al anochecer apagamos la luz de la sala antes de dormir.

Questions & Answers about Al anochecer apagamos la luz de la sala antes de dormir.

Master Spanish — from Al anochecer apagamos la luz de la sala antes de dormir to fluency