Imaš li razlog da ne dođeš sutra?

A useful breakdown is:

• Imaš = you have
• li = a question particle used to form a yes/no question
• razlog = reason
• da = often introduces a clause like to / that
• ne = not
• dođeš = you come / you should come / you would come depending on context; here it refers to coming tomorrow
• sutra = tomorrow

So the structure is roughly:

Do you have a reason not to come tomorrow?

A very literal feel would be:

Have you a reason that you not come tomorrow?

Li is a particle used to turn something into a yes/no question.

So:

• Imaš razlog = You have a reason
• Imaš li razlog? = Do you have a reason?

It does not have a direct English translation by itself. Its job is grammatical, not lexical.

Because li is an enclitic, which means it normally goes in the second position of its phrase or clause.

So Serbian prefers:

• Imaš li razlog...?

not:

• Li imaš razlog...? ✗

This second-position behavior is very common with Serbian clitics.

Yes, absolutely.

These are both natural:

• Imaš li razlog da ne dođeš sutra?
• Da li imaš razlog da ne dođeš sutra?

Both mean the same thing: Do you have a reason not to come tomorrow?

Very broadly:

• Imaš li... can feel a bit more compact or direct.
• Da li imaš... is also very common and often feels a little more explicitly question-like to learners because da li is a very recognizable question marker.

Because Serbian usually does not need subject pronouns unless they are emphasized.

The verb imaš already tells you the subject is you (singular).

• imam = I have
• imaš = you have
• ima = he/she/it has

So ti is unnecessary unless you want contrast or emphasis:

• Imaš li razlog...? = normal
• Ti imaš li razlog...? = unusual in this exact placement
• Imaš li ti razlog...? = Do you have a reason? (with emphasis on you)

Because Serbian very often uses da + present tense where English uses an infinitive.

So English:

• a reason not to come

often becomes Serbian:

• razlog da ne dođeš

Literally, this is closer to:

• a reason that you not come

Even though Serbian does have infinitives, the da + present construction is extremely common and natural.

This is mainly about aspect.

• doći = to come (perfective)
• dolaziti = to be coming / to come regularly (imperfective)

Here, the sentence refers to one specific future event: coming tomorrow. For that, Serbian normally prefers the perfective verb:

• da ne dođeš sutra = not to come tomorrow / not to show up tomorrow

If you said da ne dolaziš sutra, it would usually sound different, more like:

• that you are not coming tomorrow
• or something more ongoing/planned/habitual, depending on context

So in this sentence, dođeš is the more natural choice.

Yes, dođeš is morphologically a present-tense form, but because it comes from a perfective verb and appears in this kind of clause, it refers to a future single event.

That is very normal in Serbian.

So:

• da dođeš sutra = to come tomorrow
• da ne dođeš sutra = not to come tomorrow

This is one of those places where the form looks “present,” but the meaning is future because of the verb type and the context.

Because in Serbian, ne is usually written separately from finite verbs:

• ne znam = I don’t know
• ne idem = I’m not going
• ne dođeš = you don’t come / you not come

So da ne dođeš is exactly what you should expect.

There are a few common exceptions elsewhere in the language, but here the normal spelling is definitely ne dođeš.

Razlog is the direct object of imaš, so it is in the accusative case.

But razlog is a masculine inanimate noun, and for many masculine inanimate nouns, the accusative looks the same as the nominative.

So:

• nominative: razlog
• accusative: razlog

That is why you do not see a visible change here.

Because Serbian has no articles.

English must choose between:

• a reason
• the reason

Serbian just says:

• razlog

The exact meaning depends on context. In this sentence, English usually translates it as a reason:

• Do you have a reason not to come tomorrow?

Yes. Serbian word order is fairly flexible.

These are both natural:

• Imaš li razlog da ne dođeš sutra?
• Imaš li razlog da sutra ne dođeš?

The meaning is basically the same. The difference is mostly about rhythm or emphasis.

Putting sutra later is very natural and straightforward. Moving it before the verb in the subordinate clause can slightly highlight the time.

It is natural, but it can sound fairly direct depending on tone and context.

If you want to sound softer, Serbian often adds words like možda (maybe/perhaps) or neki (some/any):

• Da li možda imaš neki razlog da ne dođeš sutra?

That can feel a bit gentler, like:

• Do you maybe have some reason not to come tomorrow?

But the original sentence is completely normal Serbian.