Ana se înscrie azi.

Se is the reflexive clitic here. The verb is a se înscrie, which means to sign up / to register oneself.

So:

• a înscrie = to register someone / to enroll someone
• a se înscrie = to register oneself / to sign up

In this sentence, Ana is the person doing the action and also the one being registered, so Romanian uses se.

Compare:

• Profesorul o înscrie pe Ana. = The teacher registers Ana.
• Ana se înscrie. = Ana signs up.

Grammatically, yes, it is reflexive in Romanian. But in natural English, you usually would not translate it literally as register oneself unless the context is formal.

Most of the time, the natural English equivalent is:

• to sign up
• to register
• to enroll (depending on context)

So while Romanian uses a reflexive structure, English often uses a non-reflexive verb.

Because the subject is Ana, which is third person singular: she.

The present tense of a se înscrie is:

• eu mă înscriu = I sign up
• tu te înscrii = you sign up
• el/ea se înscrie = he/she signs up
• noi ne înscriem = we sign up
• voi vă înscrieți = you all sign up
• ei/ele se înscriu = they sign up

So Ana se înscrie uses the third person singular form, because Ana = she.

Romanian often leaves out subject pronouns because the verb ending already shows the person and number.

So instead of saying:

• Ea se înscrie azi

Romanian very often just says:

• Ana se înscrie azi
• or simply Se înscrie azi, if the subject is already clear from context

Using ea is possible, but it usually adds emphasis or contrast:

• Ea se înscrie azi, nu mâine. = She’s signing up today, not tomorrow.

Azi means today.

It is very close in meaning to astăzi, which also means today. In most situations, they are interchangeable.

• Ana se înscrie azi.
• Ana se înscrie astăzi.

Both are correct.

In general:

• azi can feel a bit shorter and more conversational
• astăzi can feel slightly more neutral or formal

But the difference is small.

Yes. Romanian present tense can sometimes refer to a near future action, especially when there is a time word like azi.

So depending on context, Ana se înscrie azi could mean:

• Ana is signing up today
• Ana signs up today
• Ana will sign up today

If the action is planned for later the same day, Romanian often still uses the present tense.

The word înscrie is roughly pronounced uhn-SKREE-eh, though the exact vowel sound in î does not exist naturally in English.

A few helpful points:

• î is a central vowel, somewhat like a tight, neutral vowel
• scri sounds like skree
• the final -e is pronounced, so înscrie has three syllables: în-scri-e

Also:

• sc before r stays a hard sk sound
• so it is în-scri-e, not în-shri-e

They belong together, but in actual sentences other words can sometimes appear around them, especially with negation or adverbs.

For example:

• Ana se înscrie azi.
• Ana nu se înscrie azi. = Ana isn’t signing up today.
• Ana se mai înscrie o dată. = Ana signs up again.

The reflexive clitic se normally stays close to the verb.

So you should think of se înscrie as a verb phrase, even though Romanian syntax allows small words like nu to come before it.

This is a very important distinction.

a înscrie

This usually means to register/enroll someone or something.

Examples:

• Școala înscrie elevi noi. = The school enrolls new students.
• O înscriu pe Ana la curs. = I’m registering Ana for the course.

a se înscrie

This means to sign up / to register oneself.

Examples:

• Ana se înscrie la curs. = Ana signs up for the course.
• Mă înscriu mâine. = I’m signing up tomorrow.

So the reflexive form changes who the action is happening to.

Yes, Romanian word order is flexible.

Ana se înscrie azi is a very natural, neutral order:

• subject + verb phrase + time expression

But you could also say:

• Azi Ana se înscrie.
• Ana azi se înscrie.
• Se înscrie azi Ana. — possible, but less neutral and more marked

The choice depends on emphasis.

For example:

• Azi Ana se înscrie. emphasizes today
• Ana se înscrie azi. is the most straightforward, neutral version

Not necessarily. Ana se înscrie azi is a complete sentence by itself.

But very often, Romanian adds information about what she is signing up for:

• Ana se înscrie azi la curs. = Ana is signing up for the course today.
• Ana se înscrie la facultate. = Ana is enrolling in university.
• Ana se înscrie în concurs. = Ana enters the contest / registers for the contest.

The preposition depends on the context:

• la for courses, schools, institutions, events
• în for competitions, lists, programs, and some other contexts

So the short sentence is complete, but it can easily be expanded.