Kad je sunce jako, sjedimo u sjeni.

Here kad means when.

Yes, kad and kada both mean when in this kind of sentence. The difference is mainly style:

• kad is very common in everyday speech
• kada can sound a bit more formal or careful

So:

• Kad je sunce jako, sjedimo u sjeni.
• Kada je sunce jako, sjedimo u sjeni.

Both are correct.

Because Croatian usually uses the verb biti (to be) in this kind of sentence, just like English does.

So:

• sunce = the sun
• je = is
• jako = strong / intense

Literally, this part is the sun is strong.

The form je is the 3rd person singular present tense of biti.

Because sunce is a neuter singular noun, and adjectives must agree with the noun in gender, number, and case.

The adjective jak means strong. Its basic singular forms are:

• jak — masculine
• jaka — feminine
• jako — neuter

Since sunce is neuter, we use jako:

• jako sunce = strong sun
• sunce je jako = the sun is strong / intense

A very common clue is the ending -e or -o in the nominative singular. Many Croatian neuter nouns end that way.

So sunce is neuter, which is why it matches with:

• jako (not jak or jaka)

You often just learn noun gender together with the noun, but endings can help you guess.

Because after u meaning in, Croatian normally uses the locative case to show location.

So:

• sjena = nominative
• u sjeni = in the shade / in shadow

Here the phrase describes where we are sitting, so it is a location, and that is why locative is used.

A useful contrast:

• u sjeni = in the shade (location, locative)
• u sjenu = into the shade (movement toward, accusative)

Because sjena is being put into the locative singular after u.

This is a normal case ending change. For many feminine nouns ending in -a, the locative singular ends in -i:

• žena → o ženi
• škola → u školi
• sjena → u sjeni

So u sjeni is simply the correct case form of sjena after u when it means in.

Because Croatian often leaves out subject pronouns when they are already clear from the verb ending.

The form sjedimo already means we sit / we are sitting.

So:

• sjedimo = we sit / we are sitting

You could say mi sjedimo, but mi is usually only added for emphasis, contrast, or clarity.

Sjedimo is the 1st person plural present tense of sjediti (to sit).

It means:

• we sit
• we are sitting

In Croatian, the present tense often covers both simple present and present continuous meanings, depending on context.

So in this sentence, sjedimo u sjeni can be understood as:

• we sit in the shade
• we are sitting in the shade
• we sit/stay in the shade when the sun is strong

Because sjediti and sjesti / sjednuti are different kinds of verbs.

• sjediti = to be sitting, a state
• sjesti / sjednuti = to sit down, a completed action of movement into a seated position

Here the sentence describes a general habit or usual situation: when the sun is strong, we sit/stay seated in the shade. That fits sjedimo.

If you used sjednemo, the meaning would be closer to:

• we sit down in the shade

That focuses on the action of taking a seat, not the state of being there.

Yes, Croatian word order is more flexible than English word order.

The given sentence is very natural:

• Kad je sunce jako, sjedimo u sjeni.

But you may also hear:

• Sjedimo u sjeni kad je sunce jako.

Both are correct. The difference is mainly in emphasis and style.

When the kad clause comes first, it often sets the scene first, which is very natural.

Because the sentence begins with a subordinate clause:

• Kad je sunce jako = When the sun is strong

Then comes the main clause:

• sjedimo u sjeni = we sit in the shade

In Croatian, it is standard to separate that opening subordinate clause from the main clause with a comma.

No. Jako can have different uses.

In this sentence, jako is an adjective form agreeing with sunce, so it means something like:

• strong
• intense

But jako can also be an adverb meaning very:

• jako dobro = very good
• jako sunce = strong/intense sun

So the meaning depends on how it is being used in the sentence.

Yes.

In Kad je sunce jako:

• sunce is the subject
• je is the verb
• jako is the predicate adjective describing sunce

So the structure is basically:

• When + the sun + is + strong

That is why sunce stays in the nominative form.