Dejé las gafas sobre el salpicadero antes de bajar del coche.

Dejé is the preterite, which is used for a completed action in the past: I left/put the glasses there at a specific moment.

Dejaba is the imperfect, which would usually suggest:

• a repeated action,
• an ongoing background action,
• or a habitual action.

So in this sentence, dejé fits because the speaker is talking about one completed event.

Spanish often omits subject pronouns because the verb ending already shows who is doing the action.

• Dejé = I left
• so yo is not necessary.

You could say Yo dejé las gafas..., but that would usually add emphasis, contrast, or clarification.

In Spanish, it is very common to use the definite article with everyday objects when the context makes it clear which ones you mean.

So las gafas means the glasses, but in natural English we often just say glasses.

Spanish is more likely than English to use the in these cases.

Because in Spanish, glasses are normally treated as a plural noun: las gafas.

This works like English glasses or scissors. Even though it refers to one item, the noun is grammatically plural.

Examples:

• Mis gafas están aquí.
• No encuentro las gafas.

Here, dejar means something like:

• to leave
• to put down
• to leave behind

So Dejé las gafas sobre el salpicadero means the speaker placed the glasses there and left them there.

It does not necessarily mean they forgot them, although that could be implied by context.

Sobre means on or on top of, so it is the natural choice if the glasses were resting on the surface of the dashboard.

• sobre el salpicadero = on the dashboard

En el salpicadero would sound less precise here. En often means in, inside, or more generally on/in/at, depending on context, but sobre clearly expresses physical contact with the top surface.

Yes. Salpicadero is the usual word in Spain for dashboard.

In other Spanish-speaking countries, you may hear other terms, such as:

• tablero
• tablero de instrumentos

But for Spanish from Spain, salpicadero is very natural.

After antes de, Spanish uses an infinitive when the subject is the same as in the main clause.

Here, the same person did both actions:

• Dejé = I left the glasses
• bajar = I got out

So:

• antes de bajar del coche = before getting out of the car

If the subject changed, Spanish would normally use antes de que + subjunctive:

• Antes de que él bajara del coche...

Both can be correct, but bajar del coche is very common in Spain for getting out of a car.

Literally, bajar means to go down, but with vehicles it often means to get off / get out.

So:

• bajar del coche = get out of the car
• salir del coche = leave/get out of the car

In Spain, bajar del coche sounds very natural in everyday speech.

Because de + el contracts to del in Spanish.

So:

• de + el coche → del coche

This contraction is required.

Compare:

• del coche = from the car / out of the car
• but de la casa stays de la casa because de + la does not contract.

In Spain, coche is the normal everyday word for car.

In many parts of Latin America, people may say:

• carro
• auto

So coche is one of the clues that this sentence is in Spanish from Spain.

Yes. Spanish word order is fairly flexible.

For example, you could also say:

• Antes de bajar del coche, dejé las gafas sobre el salpicadero.

That means the same thing, but it puts the time sequence first.

The original version sounds completely natural too:

• Dejé las gafas sobre el salpicadero antes de bajar del coche.

Spanish often leaves out possessives when the owner is already obvious from context.

So instead of saying:

• mis gafas
• mi coche

Spanish can naturally say:

• las gafas
• el coche

This is especially common when there is no risk of confusion. If the speaker wanted to stress ownership, they could say mis gafas or mi coche.