Ako nemaš kemijsku, mogu ti posuditi jednu iz svoje pernice.

In everyday Croatian, kemijska is a very common short form of kemijska olovka, which means ballpoint pen or simply pen.

So in this sentence, kemijsku does not mean chemical in the literal English sense. It is shorthand for a pen.

• kemijska olovka = ballpoint pen
• kemijska = pen, for short

In the sentence, it appears as kemijsku because of case, not because the basic word is different.

Because it is the accusative singular feminine form.

The hidden full noun is:

• kemijska olovka = a ballpoint pen

Since this is the direct object of nemaš (you don’t have), Croatian uses the accusative:

• nominative: kemijska
• accusative: kemijsku

So:

• Imaš kemijsku. = You have a pen.
• Nemaš kemijsku. = You don’t have a pen.

Even though olovka is omitted, the adjective-like word kemijska still changes form as if the full noun were there.

Croatian often leaves out a noun when it is obvious from context, especially in everyday speech.

So:

• kemijska olovka → full form
• kemijska → shortened everyday form

This works because speakers understand that kemijska refers to a pen.

English does this too sometimes, though less often. For example, we might say the red one instead of repeating the noun. Croatian does this quite naturally with words like kemijska.

The verb imati (to have) has a special negative present form in Croatian.

So instead of:

• ne imaš ❌

you say:

• nemaš ✅

The full set is:

• nemam = I don’t have
• nemaš = you don’t have
• nema = he/she/it doesn’t have
• nemamo = we don’t have
• nemate = you don’t have
• nemaju = they don’t have

This is something learners usually just memorize as a special pattern.

Here, ako means if.

In sentences like this, it introduces a condition:

• Ako nemaš kemijsku... = If you don’t have a pen...

That is its most common meaning. It is the normal word you use for if in straightforward conditional sentences.

Ti is the dative singular form of ti = you.

Here it means to you:

• mogu ti posuditi = I can lend to you

English usually says:

• I can lend you one

But Croatian often expresses that with a dative pronoun:

• ti = to you
• mi = to me
• mu = to him
• joj = to her
• etc.

So literally, this part is something like:

• I can to-you lend one

Because ti is a clitic, an unstressed short word, and Croatian has special word-order rules for clitics.

These short forms usually go near the beginning of the clause, often in the second position.

So:

• Mogu ti posuditi jednu. ✅

sounds natural.

Putting ti later is usually not the normal neutral order.

For a learner, the important point is:

• short pronouns like ti, mi, mu, je, ga, se often come early in the sentence.

It can be confusing, because Croatian posuditi can be used in contexts that English splits into lend and borrow.

In this sentence, it clearly means lend, because of ti:

• mogu ti posuditi jednu = I can lend you one

The person doing the lending is the speaker.

A useful way to think about it:

• if the item goes to someone else, posuditi nekome nešto = lend someone something
• in other contexts, Croatian may also use related forms for borrow, depending on structure

So here the meaning is definitely lend.

Jednu means one, but it is in the feminine accusative singular form.

It agrees with the omitted noun:

• jednu kemijsku
• jednu olovku

Because kemijska (olovka) is feminine and accusative here, jedan changes to jednu.

Compare:

• masculine: jedan
• feminine accusative: jednu
• neuter: jedno

So jednu means one (pen).

You could repeat the noun, but Croatian often avoids repetition when the meaning is already clear.

So after mentioning kemijsku, it is natural to say:

• mogu ti posuditi jednu = I can lend you one

This works just like English one.

It sounds natural and avoids repeating the same word unnecessarily.

Because Croatian usually uses the reflexive possessive svoj when the possessor is the same as the subject.

Here, the subject is implied in mogu:

• mogu = I can

And the pencil case belongs to that same I, so Croatian prefers:

• iz svoje pernice = from my own pencil case

This is a very important rule in Croatian.

Compare:

• Uzeo sam svoju knjigu. = I took my book.
  (the book is mine, and I am the subject)

If you said moju instead, it can sometimes still be understood, but svoju is the normal and preferred form when the subject owns the thing.

Because the preposition iz requires the genitive case.

So:

• nominative: pernica = pencil case
• genitive: pernice

That is why you get:

• iz pernice = out of / from the pencil case

And with the possessive:

• iz svoje pernice = from my pencil case

Many Croatian prepositions require specific cases, and iz always takes the genitive.

Pernica means pencil case.

It is the container where you keep pens, pencils, erasers, and similar school or office items.

So:

• iz svoje pernice = from my pencil case

It is informal singular, because it uses:

• nemaš = you don’t have
• ti = to you

This is what you say to one person you address with ti.

If you wanted the formal or plural version, you would say something like:

• Ako nemate kemijsku, mogu vam posuditi jednu iz svoje pernice.

That can mean:

• speaking politely to one person, or
• speaking to more than one person

Because Croatian often uses a modal verb plus infinitive, just like English.

• mogu = I can
• posuditi = to lend

So:

• mogu posuditi = I can lend

This is very similar to English:

• I can lend

Croatian does not need an extra word like to here.

This is about aspect.

• posuditi = perfective
• posuđivati = imperfective

In this sentence, the speaker is offering one complete action:

• I can lend you one

That is why posuditi is natural here.

If you were talking about repeated or habitual lending, the imperfective form might be more appropriate in another context.

So here, posuditi fits the idea of a single completed act of lending.

In theory, Croatian accusative without an article can be definite or indefinite, because Croatian has no articles like a and the.

So the form itself does not tell you whether it is:

• a pen
• the pen

You understand that from context.

In this sentence, the natural interpretation is a pen, because the speaker then says I can lend you one. That makes it clear they mean any pen, not a specific already-known pen.