La professora diu que avui no pot posar la nota perquè encara ha de corregir l'examen.

La professora means the female teacher.

• la is the feminine singular definite article: the
• professora is the feminine form of professor

So:

• el professor = the male teacher
• la professora = the female teacher

Catalan often marks gender clearly in nouns like this.

Catalan often leaves out subject pronouns when they are not needed. The verb form already tells you the person.

So diu by itself can mean:

• he says
• she says
• it says

Here, because the subject is already stated as La professora, there is no need to add ella.

Catalan does this much more than English:

• La professora diu... = The teacher says...
• Ella diu... = She says...

The second version is possible, but usually unnecessary unless you want emphasis.

Diu is the 3rd person singular present of dir, meaning to say.

So:

• jo dic = I say
• tu dius = you say
• ell/ella diu = he/she says

It is an irregular verb, so it does not follow a simple regular pattern.

Here que means that.

So:

• La professora diu que... = The teacher says that...

In English, that is often optional:

• The teacher says that...
• The teacher says...

In Catalan, que is normally used in this structure.

The basic idea is:

• avui = today
• no = not
• pot = can
• posar = put / place / assign

In Catalan, no usually goes directly before the conjugated verb:

• no pot = cannot / can't

And after a modal verb like pot, the next verb stays in the infinitive:

• pot posar = can put / can assign

So:

• avui no pot posar la nota = today she cannot assign the grade

Yes, literally it is put the grade, but in natural English it usually means something like:

• assign the grade
• enter the grade
• give the grade
• post the grade

Catalan often uses posar in places where English would use several different verbs.

So in a school context, posar la nota is a very normal way to say that the teacher is giving or recording the student’s mark.

Here la nota means the grade or the mark.

The word nota can mean different things depending on context, such as:

• a grade / mark
• a note
• a musical note

In this sentence, because it talks about correcting an exam, la nota clearly means the grade.

Here perquè means because.

So:

• ... perquè encara ha de corregir l'examen = ... because she still has to correct the exam

This is different from:

• que = that
• per què = why / for what reason

A very common distinction is:

• perquè = because
• per què = why

For example:

• No pot venir perquè treballa. = She can't come because she is working.
• Per què no pot venir? = Why can't she come?

Here encara means still.

So:

• encara ha de corregir l'examen = she still has to correct the exam

It shows that the action has not been completed yet.

Depending on context, encara can sometimes also mean yet or even, but here still is the most natural meaning.

Ha de + infinitive is a very common Catalan structure meaning has to or must.

So:

• ha de corregir = has to correct

This comes from the verb haver de + infinitive, which expresses obligation.

Examples:

• He de marxar. = I have to leave.
• Has d'estudiar. = You have to study.
• Ha de corregir l'examen. = She has to correct the exam.

This is one of the standard ways to say have to in Catalan.

Because examen begins with a vowel, el becomes l' before it.

So:

• el llibre = the book
• l'examen = the exam

This apostrophe is very common in Catalan with articles before vowels.

Here:

• l'examen = the exam

Yes. Examen is masculine, so its article is el, which becomes l' before a vowel.

So:

• el examen would not be written that way in standard Catalan
• the correct form is l'examen

You can also see the gender in other combinations:

• un examen = an exam
• l'examen difícil = the difficult exam

Yes. Once the subject is clear, Catalan could say:

• Diu que avui no pot posar la nota perquè encara ha de corregir l'examen.

This would still be understood as The teacher says... from context.

Catalan often avoids repeating subjects when they are already known. But including La professora at the beginning makes the sentence clearer, especially for first mention.

Because the sentence describes a present situation:

• diu = says
• pot = can
• ha de corregir = has to correct

This is natural in Catalan, just as it is in English:

• The teacher says that today she can't assign the grade because she still has to correct the exam.

Even though the correcting may happen very soon or later today, the obligation exists now, so the present tense is appropriate.

Yes, Catalan word order is somewhat flexible.

For example, you could also hear:

• La professora diu que no pot posar la nota avui perquè encara ha de corregir l'examen.

Both are natural, but the emphasis changes slightly.

• avui no pot posar... highlights today
• no pot posar... avui places today a little later in the sentence

The original version is very normal and clear.

Yes: it is built from a main clause plus a subordinate clause, and then a reason clause.

Structure:

• La professora diu = main clause
• que avui no pot posar la nota = content clause after diu
• perquè encara ha de corregir l'examen = reason clause

So the sentence works like this:

1. The teacher says...
2. what does she say? — that she can't assign the grade today
3. why not? — because she still has to correct the exam

This kind of layered structure is extremely common in Catalan.