Píšu odvolání.

Píšu is the 1st person singular present tense of psát (to write).

So píšu means:

• I write
• I am writing

Czech uses the same present-tense form for both the English simple present and present continuous, so the exact meaning depends on context.

In Czech, the subject pronoun is often omitted because the verb ending already shows the person.

Here, píšu clearly means I write / I am writing, so já (I) is not necessary.

You could say:

• Já píšu odvolání.

But that usually adds emphasis, for example:

• I’m the one writing the appeal.

Because psát is not completely regular in the present tense. Its stem changes.

Infinitive:

• psát = to write

Present tense:

• píšu = I write
• píšeš = you write
• píše = he/she/it writes

So the present-tense stem is píš-, not ps-.

This is just something learners need to memorize as part of the verb’s conjugation.

Here odvolání is the direct object of the verb píšu, so it is in the accusative case.

However, odvolání is a neuter noun, and for this type of noun the nominative and accusative singular often look the same. So the form stays odvolání.

In this sentence:

• píšu = verb
• odvolání = what I am writing → direct object → accusative

Odvolání is a neuter noun. It ends in -í, which is very common for neuter nouns in Czech.

It is also a kind of verbal noun, related to the idea of an action or act. Depending on context, odvolání can mean things like:

• appeal
• withdrawal
• recall
• revocation

In this sentence, you already know the intended meaning from context, but grammatically it behaves as a normal noun.

Because Czech has no articles.

English says:

• I am writing an appeal
• I am writing the appeal

Czech simply says:

• Píšu odvolání.

Whether it means an appeal or the appeal depends on context.

Grammatically, it can mean either.

The Czech present tense often covers both:

• I write
• I am writing

In real usage, Píšu odvolání will often be understood as I’m writing an appeal if you are talking about what you are doing now.

Context decides which English translation is best.

Píšu odvolání is a normal, natural Czech word order.

It is basically:

• (I) am writing
  • appeal

Because the subject I is omitted, the sentence begins with the verb.

You can change the word order in Czech, but that usually changes emphasis, not the basic meaning. For example:

• Odvolání píšu. = It’s the appeal that I’m writing.

So Píšu odvolání is the neutral version.

A rough pronunciation is:

• Píšu ≈ PEE-shoo
• odvolání ≈ OD-vo-laa-nee

A few helpful points:

• š is pronounced like sh in shoe
• í and á are long vowels
• Czech stress usually falls on the first syllable of each word:
  • PÍ-šu
  • OD-vo-lá-ní

Yes. Psát / píšu is an imperfective verb, so it focuses on the process of writing, not the completion.

So Píšu odvolání suggests:

• I am writing an appeal
• I’m working on it

If you wanted to express completion, Czech would often use a perfective verb, for example napsat.

Compare:

• Píšu odvolání. = I am writing an appeal.
• Napíšu odvolání. = I will write / I will complete the appeal.

Yes, that is grammatically correct.

But in Czech, adding já often gives extra emphasis. So:

• Píšu odvolání. = neutral, ordinary
• Já píšu odvolání. = I’m writing the appeal / As for me, I’m writing the appeal

So the version without já is usually the most natural unless you want contrast or emphasis.