En el mercado compré brócoli y col para la cena.

Because Spanish normally uses the definite article with places like el mercado when talking about a specific kind of place in a general, natural way.

• en = in / at
• el mercado = the market

So En el mercado means At/In the market.

Saying en mercado would sound incomplete or unnatural in standard Spanish.

Compré is the preterite form of comprar, used for a completed action in the past:

• compré = I bought

In this sentence, the speaker is talking about one finished action: they went to the market and bought something.

Compraba is the imperfect, which would suggest an ongoing, habitual, or background action, such as:

• Cuando vivía allí, compraba verduras en el mercado. = When I lived there, I used to buy vegetables at the market.

So here, compré is the natural choice because it refers to one completed shopping event.

Because comprar is an -ar verb, and -é is the first person singular preterite ending for regular -ar verbs.

Pattern for comprar in the preterite:

• yo compré
• tú compraste
• él/ella/usted compró
• nosotros compramos
• vosotros comprasteis
• ellos/ellas/ustedes compraron

So compré specifically means I bought.

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

• compré already means I bought

So Yo compré... is possible, but usually unnecessary unless you want emphasis or contrast:

• Yo compré brócoli, no Ana. = I bought broccoli, not Ana.

In a neutral sentence, leaving out yo is more natural.

In Spanish, when talking about food items as things you bought, articles are often omitted, especially in lists.

So:

• compré brócoli y col = I bought broccoli and cabbage

This is similar to saying I bought bread, milk, and cheese in English.

You could sometimes hear articles in other contexts, but here the zero article sounds very natural.

Both forms can appear in Spanish, depending on the context.

As a dictionary noun, brócoli is masculine, so you can say:

• el brócoli es saludable = broccoli is healthy

But after a verb like comprar, when naming groceries or ingredients, Spanish often drops the article:

• Compré brócoli
• Compramos tomates
• Necesito arroz

So in this sentence, no article is needed.

Col is a general word for cabbage and can also refer to cabbage-type vegetables more broadly in some contexts.

In Spain, col is a very normal word. Repollo also exists, but it more specifically suggests a head of cabbage.

So:

• col = cabbage
• repollo = cabbage, often more specifically the round head cabbage

In many everyday situations, translating col simply as cabbage is enough.

Y means and.

Normally it is pronounced like ee. However, before words beginning with an i sound, Spanish usually changes y to e to avoid repetition of the same sound:

• padre e hijo = father and son
• España e Italia = Spain and Italy

But here the next word is col, so y stays y:

• brócoli y col

Para la cena means for dinner.

• para = for
• la cena = dinner / the evening meal

It shows the purpose of the purchase: the broccoli and cabbage were bought for dinner.

This is a very common question because both para and por can mean for in English.

Here, para is used because it expresses purpose or intended use:

• compré brócoli y col para la cena = I bought broccoli and cabbage for dinner

That means the food is intended for dinner.

Por would not sound right here. Por is used in other meanings such as cause, exchange, movement through, duration, and so on.

Yes. That word order is also correct.

Spanish word order is more flexible than English, especially with time and place phrases.

Both are natural:

• En el mercado compré brócoli y col para la cena.
• Compré brócoli y col en el mercado para la cena.

Starting with En el mercado gives a little more emphasis to the location, as if setting the scene first.

Brócoli is pronounced roughly BRO-ko-lee.

The written accent mark shows where the stress goes:

• bró-co-li

Without the accent, Spanish stress rules would make it sound different, so the accent is needed to show the correct stressed syllable.

It is mostly general Spanish and would be understood everywhere.

A few vocabulary preferences may vary by region:

• mercado is universal
• brócoli is universal
• col is very common in Spain; other regions may also use repollo depending on the exact type of cabbage

But overall, the sentence is standard and widely understandable.

Yes. Cena can refer to dinner as the meal or dinner as the eating occasion.

So para la cena can naturally mean:

• for dinner
• for the evening meal
• to have at dinner

Spanish does not need to distinguish sharply between those meanings here; the context makes it clear.