Čtu českou knihu.

Čtu already means I read / I am reading. In Czech, the verb ending often shows the subject, so the pronoun já is usually omitted unless you want emphasis or contrast.

• Čtu. = I’m reading.
• Já čtu. = I’m the one reading / As for me, I’m reading

So in a neutral sentence, čtu by itself is completely normal.

The dictionary form is číst, meaning to read.

Čtu is the 1st person singular present tense form: I read / I am reading.

This verb is somewhat irregular, so the present-tense form does not look exactly like the infinitive:

• číst = to read
• čtu = I read
• čteš = you read
• čte = he/she/it reads

So this is a verb you simply need to get used to as a pattern.

Because knihu is the accusative singular form of kniha.

In this sentence, book is the direct object of the verb read, so Czech uses the accusative case.

• nominative: kniha = a book / the book
• accusative: knihu = a book / the book, as the object of the action

So:

• Kniha je zajímavá. = The book is interesting.
  Here kniha is the subject.
• Čtu knihu. = I am reading a/the book.
  Here knihu is the object.

Because the adjective has to agree with the noun it describes.

The noun kniha is:

• feminine
• singular
• here in the accusative

So the adjective český changes to the feminine accusative singular form českou.

Agreement here looks like this:

• česká kniha = a Czech book
  nominative feminine singular
• čtu českou knihu = I am reading a Czech book
  accusative feminine singular

Both the adjective and the noun change to match the grammar of the sentence.

It is the accusative singular.

The phrase českou knihu is the direct object of čtu, and direct objects of transitive verbs are very often in the accusative in Czech.

So:

• čtu koho? co? = I read whom? what?
• answer: českou knihu

That tells you the object should be accusative.

Czech normally does not use articles like English a and the.

So Čtu českou knihu could mean:

• I am reading a Czech book
• I am reading the Czech book

The exact meaning depends on context.

If Czech speakers need to make the meaning more specific, they usually do it through context, word order, or words like:

• jednu = one / a certain
• tu = that / the one we mean
• nějakou = some

But in many cases, Czech simply leaves this unstated.

Most naturally, českou knihu means a Czech book — that is, a book that is Czech in origin, type, or association.

If you want to say a book in the Czech language, Czech often says something more explicit, such as:

• knihu v češtině = a book in Czech
• český text can sometimes mean a Czech text, but context matters

So learners should be careful: český/česká/českou does not automatically mean written in the Czech language in every situation.

Čtu is pronounced roughly like chtoo, but with a few important details:

• č sounds like ch in church
• t is a clear t
• u sounds like oo in food

So: č-tu

One thing that may feel difficult is that Czech allows the consonant cluster čt without adding a vowel in between. English speakers often want to say something like chuh-too, but Czech says it more tightly: čtu.

A rough pronunciation is CHES-koh with a final ou diphthong, something like ches-kou.

More specifically:

• č = ch in church
• e = short e as in bet
• sk
• ou = a diphthong, roughly like oh + oo said smoothly together

So the word is approximately CHES-kou.

The sentence Čtu českou knihu is a very normal neutral word order.

But Czech word order is more flexible than English, so other orders are possible, especially for emphasis or topic/focus:

• Čtu českou knihu. = neutral
• Českou knihu čtu. = It’s a Czech book that I’m reading
• Knihu čtu českou. = possible, but much less neutral and more stylistically marked

So yes, the order can change, but the neutral beginner-friendly version is Čtu českou knihu.

Because that is the normal position in Czech: adjectives usually come before the noun they describe.

So:

• česká kniha = Czech book
• zajímavá kniha = interesting book
• nový dům = new house

Adjectives can sometimes come after the noun in special styles or expressions, but for ordinary usage, putting českou before knihu is exactly what you should expect.

It can mean both I read and I am reading.

Czech does not usually make a strict distinction between the simple present and the present continuous the way English does. Context tells you which is meant.

So Čtu českou knihu can mean:

• I read a Czech book
• I am reading a Czech book

In many everyday situations, the second translation is the more natural English one.

The base forms are:

• číst = to read
• český = Czech
• kniha = book

In the sentence they appear as:

• čtu = 1st person singular present of číst
• českou = feminine accusative singular of český
• knihu = accusative singular of kniha

So this sentence is a good example of how Czech words change their endings depending on their role in the sentence.