Flomaster ne piše dobro, pa ću uzeti plavu kemijsku i poslije kupiti novi.

In Croatian, pisati literally means to write, but it is also used for writing tools when they produce writing on paper.

So:

Flomaster ne piše dobro
means
The marker isn’t writing well or The marker isn’t working well

This is very natural Croatian. English often says This pen doesn’t work, while Croatian commonly says Ne piše.

Because dobro is an adverb here, not an adjective.

It describes how the marker writes:

• piše dobro = writes well

If you used dobar, that would describe a noun, for example:

• Flomaster je dobar = The marker is good

So in this sentence, dobro is correct because it modifies the verb piše.

Here pa means something like so, therefore, or and so.

It connects the two ideas:

• The marker doesn’t write well
• so I’ll take a blue pen...

So:

Flomaster ne piše dobro, pa ću uzeti...
= The marker isn’t writing well, so I’ll take...

In everyday Croatian, pa is extremely common and often sounds more natural than a very formal equivalent.

Both are possible in Croatian, but the word order depends on style and sentence structure.

In this sentence:

pa ću uzeti...

the auxiliary ću is in its normal clitic position, near the beginning of the clause.

Croatian future tense is often formed with:

• auxiliary ću, ćeš, će...
• plus infinitive

So both of these can exist:

• Uzet ću plavu kemijsku.
• Ću uzeti plavu kemijsku. — generally not used at the beginning like this
• Pa ću uzeti plavu kemijsku. — natural

The important thing is that clitics like ću usually do not stand completely freely; they tend to come in the second position of the clause.

It is in the accusative singular feminine.

That is because it is the direct object of uzeti:

• uzeti što? = to take what?
• plavu kemijsku

The full expression is usually understood as:

• plavu kemijsku olovku = a blue ballpoint pen

But in everyday Croatian, kemijska or kemijsku is often used by itself, with olovka omitted.

So:

• plava kemijska = nominative
• plavu kemijsku = accusative

Yes. In everyday Croatian, kemijska is a very common shortened form of kemijska olovka, which means ballpoint pen.

So:

• kemijska olovka = ballpoint pen
• kemijska = pen, in normal speech

In the sentence, plavu kemijsku means a blue pen.

Because the adjective must agree with the noun it describes.

The implied noun is kemijsku olovku or simply kemijsku, which is:

• feminine
• singular
• accusative

So the adjective plav changes to match it:

• plava kemijska = nominative
• plavu kemijsku = accusative

This is basic adjective-noun agreement in Croatian.

Because novi refers back to flomaster, not to kemijsku.

At the start of the sentence, the item that is not working is:

• flomaster = marker

Later, the speaker says they will buy a new one, meaning a new marker.

Since flomaster is:

• masculine
• singular
• inanimate

the accusative form is the same as the nominative:

• novi flomaster = nominative
• kupiti novi flomaster = accusative

That is why we get:

kupiti novi

not

kupiti novu

If it referred to kemijsku, then feminine novu would make sense.

Croatian often leaves out a noun when it is clear from context.

So:

kupiti novi
literally means
buy a new one

The listener understands that novi stands for novi flomaster.

English does the same thing:

• I’ll buy a new one

So this omission is very natural.

Because both infinitives share the same subject and the same future meaning.

So:

pa ću uzeti plavu kemijsku i poslije kupiti novi

means:

so I’ll take a blue pen and buy a new one later

The auxiliary ću applies to both actions:

• ću uzeti
• ću kupiti

Croatian often avoids repeating the auxiliary when it would be unnecessary.

You could repeat it for emphasis, but it is less natural here:

• pa ću uzeti plavu kemijsku i poslije ću kupiti novi

That is possible, but the original version is smoother.

Here poslije means later or afterwards.

So:

poslije kupiti novi
= buy a new one later

It is functioning as an adverb of time.

You may also hear:

• kasnije = later
• potom = afterwards, then

In everyday speech, poslije is very common.

Because Croatian usually omits subject pronouns when they are already clear from the verb form.

Here, ću tells you that the subject is I:

• ću = I will

So Croatian does not need to say ja unless the speaker wants extra emphasis.

Compare:

• Pa ću uzeti plavu kemijsku. = normal
• Pa ću ja uzeti plavu kemijsku. = I will take the blue pen, with emphasis

This is one of the most important differences from English.

Usually yes, or very close.

Flomaster normally refers to a felt-tip pen or marker. Depending on context, English could translate it as:

• marker
• felt-tip pen
• sometimes highlighter, if the context fits, though that is not the default meaning

In this sentence, marker is the most natural translation.

Almost, but plavu kemijsku does not necessarily mean the blue pen. It usually means a blue pen, unless the context makes it definite.

Croatian has no articles, so:

• plavu kemijsku can mean a blue pen
• in some contexts it could also mean the blue pen

Without context, English usually translates it as a blue pen.

So a very natural translation is:

The marker isn’t writing well, so I’ll take a blue pen and buy a new one later.