Jeg er ikke særlig træt i dag.

In a normal Danish main clause, the finite verb usually comes in the second position. After that, sentence adverbs like ikke often come next.

So the structure is:

• Jeg = subject
• er = finite verb
• ikke = negation
• særlig træt = complement
• i dag = time expression

That is why Danish says:

• Jeg er ikke særlig træt i dag.

and not:

• Jeg ikke er særlig træt i dag.

For an English speaker, it helps to think: Danish often puts not after the verb in simple statements.

Here, særlig means something like particularly, especially, or in natural English simply very in a negative sentence.

So:

• ikke særlig træt = not particularly tired / not very tired

This is a very common Danish pattern:

• ikke særlig god = not very good
• ikke særlig stor = not very big
• ikke særlig interessant = not very interesting

So in this sentence, særlig softens the statement. It does not mean not tired at all. It means the speaker is tired only a little, or not much.

You can translate it that way, and it is grammatically fine. But in everyday English, not very tired today is often the most natural translation.

Danish ikke særlig often corresponds to:

• not very
• not particularly
• not especially

Which one sounds best depends on context and style.

So:

• Jeg er ikke særlig træt i dag. can be:
• I’m not very tired today.
• I’m not particularly tired today.
• I’m not especially tired today.

All are possible, but not very tired is often the most natural everyday English equivalent.

Yes. That would mean:

• I am not tired today.

The difference is one of strength:

• Jeg er ikke træt i dag = I’m not tired today.
  This sounds more direct and absolute.
• Jeg er ikke særlig træt i dag = I’m not very / not particularly tired today.
  This is softer and leaves open the idea that you may be a little tired.

So særlig adds nuance.

Because the subject jeg is singular.

In Danish, predicate adjectives usually agree in number with the subject:

• Jeg er træt. = I am tired.
• Du er træt. = You are tired.
• Han/hun er træt. = He/she is tired.
• Vi er trætte. = We are tired.
• De er trætte. = They are tired.

So in your sentence:

• Jeg = singular
• therefore: træt

If the subject were plural, you would normally use trætte:

• Vi er ikke særlig trætte i dag.

Because this adjective is being used after the verb er, not directly before a noun.

Compare:

• en træt mand = a tired man
• manden er træt = the man is tired

In your sentence, træt is a predicate adjective. It describes the subject after er.

Danish adjectives still show agreement here, but only where needed:

• singular: træt
• plural: trætte

So there is no extra ending because jeg is singular.

I dag means today, and time expressions often come later in Danish sentences, especially after the main description.

So this is very natural:

• Jeg er ikke særlig træt i dag.

But Danish is somewhat flexible, and you can move i dag to the front if you want to emphasize it:

• I dag er jeg ikke særlig træt.

That sounds like:

• Today, I’m not particularly tired.

So the end position is normal, but fronting the time phrase is also possible for emphasis.

Yes, in standard modern Danish it is written as i dag.

So write:

• i dag = today

not usually:

• idag

You will sometimes see idag, especially in informal writing or older usage, but i dag is the standard spelling you should learn and use.

Yes, but it is much more common in negative contexts like this one.

With ikke, it is extremely common:

• ikke særlig træt
• ikke særlig dyrt
• ikke særlig svært

In positive sentences, særlig often has a different feel, more like special, particular, or especially, depending on context. But if you want to say very tired, Danish would more naturally use words like:

• meget træt = very tired
• virkelig træt = really tired

So:

• Jeg er meget træt i dag. = I am very tired today.

That is more natural than using særlig in a straightforward positive version.

Usually not if you mean I am very tired today.

To a learner, it may seem logical because ikke særlig = not very, but særlig by itself does not normally work as a simple equivalent of English very in this kind of sentence.

More natural options are:

• Jeg er meget træt i dag.
• Jeg er virkelig træt i dag.

So learn ikke særlig as a common chunk meaning not very / not particularly.

The verb comes before the subject in a yes/no question:

• Er du ikke særlig træt i dag? = Aren’t you very tired today? / Aren’t you particularly tired today?
• Er jeg ikke særlig træt i dag? = Am I not very tired today?

This is a standard Danish pattern:

• statement: Jeg er ikke særlig træt i dag.
• question: Er jeg ikke særlig træt i dag?

So Danish forms yes/no questions by switching the order of subject and finite verb.

Yes. Er is the present tense of at være (to be), and here it corresponds to English am.

So:

• jeg er = I am
• du er = you are
• han er = he is
• vi er = we are

In this sentence:

• Jeg er ikke særlig træt i dag. = I am not very tired today.

This is a direct match with English structure.

A rough learner-friendly pronunciation is something like:

• SAIR-lee or SEHR-lee

But the real Danish pronunciation is more compressed and softer than English spelling suggests. The æ sound is important: it is somewhat like the vowel in English cat, but not exactly the same.

Also, in everyday speech, særlig may sound reduced, so it may be harder to hear clearly at first.

A useful strategy is to learn it as a whole chunk:

• ikke særlig

because native speakers use that combination very often.

Træt is tricky for English speakers because of both the consonant cluster and the vowel.

A rough approximation is:

• something like tret with an æ-type vowel

But do not expect it to sound exactly like any English word. The æ is a key Danish vowel, and Danish pronunciation tends to be more relaxed and less sharply articulated than English.

It is best to listen to native audio and repeat whole phrases such as:

• jeg er træt
• ikke særlig træt

rather than trying to build the pronunciation sound by sound only from spelling.

Then you can move i dag to the front:

• I dag er jeg ikke særlig træt.

This puts more focus on today, as if contrasting it with other days.

For example:

• I går var jeg meget træt, men i dag er jeg ikke særlig træt.
• Yesterday I was very tired, but today I’m not very tired.

So word order can help show emphasis in Danish.

No, Danish normally requires the subject to be stated.

So you say:

• Jeg er ikke særlig træt i dag.

not just:

• Er ikke særlig træt i dag.

unless you are in very informal note-style writing or speech where things are being omitted on purpose.

In normal grammar, Danish needs the subject, much like English does.