Escric la pregunta en un paper amb un bolígraf.

Escric is the first-person singular present tense form of escriure, which means to write.

So:

• escriure = to write
• escric = I write / I am writing

This verb is a little irregular in the jo form:

• jo escric
• tu escrius
• ell/ella escriu

So a learner might want to memorize escric as a special form rather than trying to build it mechanically.

Catalan often leaves out subject pronouns when they are not needed, because the verb ending already shows who the subject is.

• Escric already tells you the subject is I
• so jo is optional

You could say:

• Jo escric la pregunta en un paper amb un bolígraf

but that usually adds emphasis, contrast, or clarity. The version without jo is very normal and natural.

La pregunta means the question, so it refers to a specific question.

• la pregunta = the question
• una pregunta = a question

Catalan, like English, uses the definite article when the noun is specific or already known in the context.

Also, Catalan generally uses articles quite regularly before nouns, so leaving the article out would usually sound wrong here.

Yes. In this sentence, un paper is understood as a piece/sheet of paper or simply a paper in the everyday sense.

So:

• paper can mean paper as a material
• un paper can mean a piece of paper / a sheet / a note

If you want to be more explicit, you can also say:

• un full de paper = a sheet of paper

But en un paper is perfectly understandable and natural in many contexts.

Catalan often uses en where English uses on or sometimes in, especially with writing surfaces.

So:

• en un paper = on a piece of paper
• en una llibreta = in a notebook
• en una paret = on a wall

This is a good example of why it is better not to translate prepositions word-for-word from English. English says on paper, but Catalan commonly says en paper / en un paper depending on the meaning.

Amb means with, and here it introduces the instrument used to do the action.

So:

• amb un bolígraf = with a pen

This is very common in Catalan:

• tallar amb un ganivet = to cut with a knife
• escriure amb llapis = to write with a pencil

Also, bolígraf means pen, especially a normal ballpoint-type pen.

Yes, you can say amb bolígraf, but it changes the nuance a little.

• amb un bolígraf = with a pen, using one pen
• amb bolígraf = in pen, in ballpoint, using pen as the writing medium

So:

• Escric la pregunta amb un bolígraf focuses on the tool
• Escric la pregunta amb bolígraf focuses more on the type of writing medium, as opposed to pencil, for example

Both are possible, but amb un bolígraf is a very straightforward and beginner-friendly way to say it.

It can mean either one, depending on context.

Catalan present tense often covers both:

• I write
• I am writing

So Escric la pregunta... could mean:

• I write the question...
• I am writing the question...

If you want to make the ongoing action more explicit, Catalan can also use:

• Estic escrivint la pregunta... = I am writing the question...

But the simple present is very common and often enough by itself.

The given word order is a normal, neutral one:

• Escric = verb
• la pregunta = direct object
• en un paper = location/surface
• amb un bolígraf = instrument

Catalan does allow some flexibility, especially for emphasis or style. For example, you might move a phrase to the front:

• En un paper, escric la pregunta amb un bolígraf.

But the original sentence is a good standard order for learners.

They show whether the noun is specific or non-specific.

• la pregunta = the specific question
• un paper = a piece of paper, not a specific one already identified
• un bolígraf = a pen, not a specific one already identified

So the sentence mixes definite and indefinite articles in the same way English often does:

• the question
• a paper / a piece of paper
• a pen

This is a very common pattern in Catalan.

The written accent in bolígraf shows where the stress goes:

• bo-LÍ-graf

So the stressed syllable is lí.

That accent mark is important because it tells you the word is not stressed in the most predictable place. Catalan uses accent marks both to show stress and, in many cases, vowel quality.

So even if you do not yet know all the pronunciation rules, the accent helps you say the word correctly.