Opettaja kirjoittaa vaikean kirjaimen taululle, ja me sanomme sen ääneen.

Finnish has no articles. So opettaja can mean teacher or the teacher, and kirjain can mean a letter or the letter, depending on context.

In this sentence, the context tells you which English article makes sense:

• Opettaja = the teacher
• vaikean kirjaimen = a difficult letter or the difficult letter, depending on the intended meaning

So Finnish usually leaves that information to context instead of marking it with articles.

They are both present-tense verb forms.

• kirjoittaa = writes / is writing
  This is the 3rd person singular form, used with opettaja (the teacher).

• sanomme = we say
  This is the 1st person plural form, used with me (we).

So:

• Opettaja kirjoittaa = The teacher writes
• me sanomme = we say

Finnish present tense often covers both simple present and near-present ongoing meaning, depending on context.

Because this phrase is the object of the verb kirjoittaa.

In this sentence, the teacher is writing a whole, specific letter, so Finnish uses the total object form. In the singular, that often looks like the genitive.

So:

• vaikea kirjain = a difficult letter / difficult letter (basic dictionary form)
• vaikean kirjaimen = object form here

Both the adjective and the noun change:

• vaikea → vaikean
• kirjain → kirjaimen

This agreement is normal in Finnish: adjectives match the noun in case and number.

This is a very common learner question, because Finnish object grammar can be tricky.

In practice, vaikean kirjaimen is the total object. In a singular noun phrase like this, the total object usually has the same form as the genitive.

So learners often say:

• it is genitive in form
• but object-wise, it functions as a total object

The important idea is:

• total object = the action is seen as directed at a complete whole
• partitive object = the action is incomplete, ongoing, or indefinite in a different way

Here the teacher writes the whole letter, so vaikean kirjaimen is natural.

Yes, kirjain is one of those Finnish nouns whose stem changes when inflected.

Its main forms are:

• kirjain = letter
• kirjaimen = of the letter / object form here
• kirjainta = letter (partitive)

So the stem in inflected forms is often kirjaime-.

This is normal for many Finnish words ending in -in. You usually just learn the basic pattern as part of the noun:

• nominative: kirjain
• genitive: kirjaimen
• partitive: kirjainta

Taululle is the allative case, which often means onto, to, or towards a surface or target.

• taulu = board
• taululle = onto the board / to the board

This is used because the writing is being put onto the surface of the board.

Compare:

• taululla = on the board (location: already there)
• taululle = onto the board (movement/result toward the board)

So:

• kirjoittaa taululle = write on/onto the board

In English we often just say write on the board, but Finnish chooses a case that reflects the idea of putting something onto it.

Sen is the pronoun it here, referring back to kirjaimen (the letter).

The basic pronoun is:

• se = it / that

But as the object here, it becomes:

• sen = it

So:

• sanomme sen = we say it

This is another example of a total object. The object is a complete thing: we say that letter aloud.

Ääneen means aloud or out loud in this expression.

The phrase:

• sanoa ääneen = to say aloud

This is a very common Finnish expression.

The form ääneen comes from ääni (voice, sound), but in modern Finnish you should mainly learn ääneen as part of the fixed phrase:

• lukea ääneen = read aloud
• sanoa ääneen = say aloud

So in this sentence:

• me sanomme sen ääneen = we say it aloud

Here it is very close to pronounce.

Literally, sanoa means to say, but when the object is a letter, word, or sound, English often translates it more naturally as pronounce.

So:

• sanomme sen ääneen literally = we say it aloud
• natural meaning = we pronounce it aloud

Both ideas are present, and the best English translation depends on context.

Yes. Sanomme already includes the meaning we.

Finnish often allows the subject pronoun to be omitted because the verb ending shows the person:

• sanomme = we say

So the sentence could also be:

• Opettaja kirjoittaa vaikean kirjaimen taululle, ja sanomme sen ääneen.

Adding me makes the subject more explicit. It can add clarity, contrast, or just sound more balanced in the sentence.

In standard written Finnish, both are possible. With me, the sentence feels a bit clearer and more deliberate.

The word order here is very normal and neutral:

• Opettaja kirjoittaa vaikean kirjaimen taululle
• ja me sanomme sen ääneen

Finnish word order is more flexible than English word order because cases show grammatical roles. But the basic neutral order is often similar to English:

• subject + verb + object + other information

So here:

• Opettaja = subject
• kirjoittaa = verb
• vaikean kirjaimen = object
• taululle = place/direction
• me = subject
• sanomme = verb
• sen = object
• ääneen = adverbial expression

Different word orders are possible for emphasis, but this version is the most straightforward one for learners.

Because ja here joins two full clauses:

1. Opettaja kirjoittaa vaikean kirjaimen taululle
2. me sanomme sen ääneen

Each clause has its own verb:

• kirjoittaa
• sanomme

In Finnish, when two independent clauses are joined like this, a comma is commonly used before the conjunction.

So the comma helps show that these are two separate but connected actions:

• the teacher writes the letter
• and we say it aloud

It would change the meaning or feel of the sentence.

• kirjaimen = total object, a complete letter
• kirjainta = partitive object

With kirjoittaa, the partitive usually suggests something less complete, less bounded, or a different aspect of the action. In this context, the teacher is writing a specific whole letter on the board, so kirjaimen is the natural choice.

So:

• kirjoittaa vaikean kirjaimen = write a/the difficult letter
• kirjoittaa vaikeaa kirjainta would sound unusual here unless the context specifically supported an incomplete or ongoing interpretation

For this sentence, kirjaimen is definitely the form learners should expect.