אני רוצה לקנות תפוחי אדמה, בצל ומלפפון לסלט ולמרק.

Usually, אני is included here because present-tense Hebrew does not clearly show person the way English does.

The form רוצה can mean:

• I want
• you want
• he wants

It only shows gender and number, not person. So אני makes it clear that the subject is I.

In some contexts, Hebrew can drop pronouns, but with present-tense forms like רוצה, the pronoun is often helpful or necessary.

In unpointed Hebrew, רוצה is spelled the same for both masculine singular and feminine singular.

In speech, they sound different:

• masculine: rotze
• feminine: rotza

So:

• אני רוצה can mean I want said by a man
• אני רוצה can also mean I want said by a woman

You usually know from pronunciation or context.

Because Hebrew works like English here.

• רוצה = want
• לקנות = to buy

So אני רוצה לקנות is literally I want to buy.

This is a very common Hebrew pattern:

[conjugated verb] + [infinitive]

Examples:

• אני רוצה לאכול = I want to eat
• היא אוהבת לקרוא = She likes to read

לקנות is the infinitive, meaning to buy.

It comes from the verb קנה = he bought / to buy.

The ל־ at the beginning is the normal marker used with Hebrew infinitives, so many Hebrew infinitives look like:

• לאכול = to eat
• ללכת = to go
• לקנות = to buy

So if you see a verb beginning with ל, it is often an infinitive.

That is exactly the idea historically and literally.

• תפוח אדמה = potato, literally earth apple
• תפוחי אדמה = potatoes

This is a fixed Hebrew expression. The first word changes form because it is in a construct relationship:

• תפוח = apple
• תפוחי = apples of ...
• אדמה = earth / soil / ground

So תפוחי אדמה literally means apples of the earth, but in normal usage it simply means potatoes.

Because the sentence is talking about:

• potatoes
• an onion
• a cucumber

Hebrew uses singular and plural normally here, just like English.

So:

• בצל = onion
• מלפפון = cucumber

If the speaker wanted more than one, they would normally use plurals such as:

• בצלים = onions
• מלפפונים = cucumbers

Because את is used before a definite direct object, and these nouns are not marked as definite here.

Hebrew uses את with things like:

• את התפוחים = the apples
• את הבצל = the onion

But in your sentence, the objects are more like indefinite shopping items:

• potatoes
• onion
• cucumber

So no את is needed.

A more definite version could look like: אני רוצה לקנות את תפוחי האדמה, את הבצל ואת המלפפון

That would sound more like specific items already known in the context.

Here ל means something like for.

So:

• לסלט = for salad / for the salad
• ולמרק = and for soup / and for the soup

It shows purpose or intended use. The speaker wants to buy these ingredients for making or using in salad and soup.

In unpointed Hebrew, the spelling can be ambiguous.

• לסלט can represent le-salat = for salad
• לסלט can also represent la-salat = for the salad

Likewise:

• למרק can be le-marak = for soup
• למרק can be la-marak = for the soup

So without vowel marks, you often need context or spoken pronunciation to know which one is meant.

The Hebrew conjunction ו־ usually means and, and it is often pronounced ve-.

But its pronunciation changes in some environments. Before certain sounds, especially labial consonants like מ, it is often pronounced u-.

So:

• ומלפפון is typically pronounced u-melafefon

That is why it does not sound like ve-melafefon in normal speech.

A simple transliteration is:

ani rotze / rotza liknot tapukhei adama, batzal u-melafefon le-salat ve-le-marak

If the meaning is specifically for the salad and the soup, then the last part may be pronounced more like:

la-salat ve-la-marak

A few helpful pronunciation notes:

• rotze = masculine
• rotza = feminine
• u-melafefon = and a cucumber
• tapukhei adama = potatoes