suupaa no yasaiuriba de kyuuri to tomato wo kaimasita.

の links two nouns and often shows a relationship like of, in, or belonging to.

So スーパーの野菜売り場 means something like:

• the vegetable section of the supermarket
• the supermarket’s vegetable section

Here, スーパー modifies 野菜売り場, telling you which vegetable section it is.

野菜売り場 is a compound noun:

• 野菜 = vegetables
• 売り場 = sales floor, section, department, place where something is sold

So 野菜売り場 means:

• vegetable section
• produce section

In a store, it refers to the area where vegetables are sold.

で marks the place where an action happens.

In this sentence, the action is 買いました (bought), so 野菜売り場で means:

• at the vegetable section
• in the vegetable section

A useful comparison:

• に / へ often marks destination
• で marks where the action takes place

Since the buying happens there, で is the natural choice.

と is being used to connect nouns, meaning and.

So:

• きゅうりとトマト = cucumbers and tomatoes

When と connects nouns in this way, it usually gives a complete list. In other words, it sounds like those are the items bought.

を marks the direct object of the verb—the thing that is affected by the action.

Here, the verb is 買いました (bought), and the things bought are:

• きゅうりとトマト

So きゅうりとトマトを買いました means:

• bought cucumbers and tomatoes

Japanese sentences often follow a subject–object–verb pattern, and the verb usually comes at the end.

So instead of English:

• I bought cucumbers and tomatoes at the supermarket’s vegetable section

Japanese puts the action last:

• スーパーの野菜売り場で きゅうりとトマトを 買いました

This is one of the most important word-order differences between Japanese and English.

買いました is the polite past form of 買う (to buy).

• 買います = buy / will buy
• 買いました = bought

Since the sentence describes a completed action, the past form is used.

It is also polite because it uses the ます style, which is very common in beginner Japanese.

The subject is omitted, which is very common in Japanese.

The sentence does not explicitly say I, we, or someone. Japanese often leaves out information that is understood from context.

So depending on the situation, it could mean:

• I bought cucumbers and tomatoes...
• We bought cucumbers and tomatoes...
• [Someone] bought cucumbers and tomatoes...

In many textbook examples, the implied subject is often I.

Because スーパー is directly modifying the noun that follows it through の.

The structure is:

• スーパー + の + 野菜売り場

You do not need another particle there. の itself is doing the job of connecting the two nouns.

If you said スーパーでの野菜売り場, that would be a different and unnatural structure here.

Not exactly.

• スーパーで = at the supermarket
• スーパーの野菜売り場で = at the supermarket’s vegetable section

The second one is more specific. It tells you the action happened in a particular part of the supermarket, not just somewhere in the store.

Japanese uses multiple writing systems together.

In this sentence:

• スーパー is in katakana because it is a loanword from English (supermarket)
• 野菜売り場 and 買 are in kanji because they are standard Japanese content words often written that way
• particles like の, で, と, を are in hiragana
• きゅうり is often written in hiragana, even though some words for foods and plants may also have kanji forms

This mixture is normal in Japanese writing.

Yes. Japanese nouns usually do not change form for singular vs. plural.

So:

• きゅうり can mean a cucumber or cucumbers
• トマト can mean a tomato or tomatoes

The exact number is understood from context. In English, we have to choose singular or plural, but Japanese often leaves that unspecified.