Zítra si vezmu s sebou na poštu dopis i malý balík.

Zítra means tomorrow. It is placed first because Czech often puts time expressions near the beginning of the sentence, especially when they set the scene for everything that follows.

So:

• Zítra si vezmu s sebou na poštu dopis i malý balík. = Tomorrow I’ll take a letter and a small parcel with me to the post office.

This does not mean that the rest of the word order is fixed. Czech word order is fairly flexible, and moving zítra later would still be grammatical, though it may sound less natural or give a different emphasis.

Vezmu is the 1st person singular future of the verb vzít (to take, perfective).

Czech often uses:

• imperfective verbs for ongoing, repeated, or habitual actions
• perfective verbs for single, completed actions

Here, the speaker means one complete action in the future: I will take ... tomorrow. That is why Czech uses the perfective verb vzít → vezmu.

Compare:

• beru = I take / I am taking / I usually take
• budu brát = I will be taking / I will take repeatedly or in an ongoing sense
• vezmu = I will take (one complete action)

So vezmu is the most natural choice here.

In this sentence, si is not exactly the same as English myself. It is the dative form of the reflexive pronoun and often adds a sense of for oneself, to one’s own benefit, or simply forms part of a natural Czech expression.

In vezmu si s sebou, the si helps create the idiomatic sense of I’ll take with me.

You do not usually translate it word-for-word here. In natural English, you would normally just say:

• I’ll take a letter and a small parcel with me

rather than something like I’ll take myself...

So yes, it is reflexive in form, but in meaning it is part of a common Czech pattern rather than a separate emphasized word.

That is a very reasonable question, because to an English speaker it can look repetitive.

• si is a short reflexive pronoun in the dative
• s sebou literally means with oneself

But together they form a very natural Czech way of saying to take something with you/along:

• vzít si s sebou = to take along / to take with you

So even though both elements are reflexive in some sense, Czech commonly uses them together. It is best to learn vzít si s sebou as a whole expression.

Examples:

• Vezmu si s sebou knihu. = I’ll take a book with me.
• Vzal si s sebou deštník. = He took an umbrella with him.

Na poštu is the normal idiomatic way to say to the post office when you mean going there as a destination for an errand.

In Czech, some places take na, and others take do. This is not always predictable from English, so it often has to be learned as a set phrase.

• na poštu = to the post office
• na policii = to the police station / to the police
• na úřad = to the office / authority office

By contrast, do often emphasizes going inside a place or into an enclosed area, but with pošta, the usual expression for going there is na poštu.

So in this sentence, na poštu is simply the natural Czech choice.

Poštu is in the accusative singular.

That is because the preposition na can take different cases:

• na + accusative = movement toward a destination
• na + locative = location

Here there is movement:

• na poštu = to the post office

Compare:

• Jdu na poštu. = I’m going to the post office.
• Jsem na poště. = I’m at the post office.

Notice the difference:

• poštu = accusative
• poště = locative

They are in the accusative, because they are the direct objects of vezmu (I’ll take).

The speaker is taking what?

• dopis
• malý balík

So both are objects of the verb.

For these nouns, the accusative looks like this:

• dopis → accusative dopis
• malý balík → accusative malý balík

This happens because they are inanimate masculine nouns, and in the singular, the accusative often looks the same as the nominative.

That is also why the adjective stays as malý here.

Here i means also, as well, or sometimes even, depending on context.

In this sentence:

• dopis i malý balík

means something like:

• a letter and also a small parcel
• both a letter and a small parcel

So the speaker is not taking just one item, but both.

Czech i often connects two things in a way similar to English and also. In many contexts, you could also use a or také, but i is very natural here.

Czech has no articles like English a/an/the.

So dopis can mean:

• a letter
• the letter

and malý balík can mean:

• a small parcel
• the small parcel

The exact meaning depends on context.

In this sentence, English would most naturally use a letter and a small parcel, but Czech does not need separate words for that.

This is something English speakers need to get used to: Czech leaves definiteness and indefiniteness to context much more often.

Yes. Czech word order is much more flexible than English word order.

The sentence as given is very natural:

• Zítra si vezmu s sebou na poštu dopis i malý balík.

But other orders are possible, for example:

• Zítra si vezmu na poštu s sebou dopis i malý balík.
• Na poštu si zítra vezmu s sebou dopis i malý balík.

These alternatives may shift emphasis slightly:

• what happens tomorrow
• where the speaker is going
• what exactly they are taking

English relies heavily on word order for grammar, but Czech uses endings much more, so word order is freer and often used for information structure and emphasis.

Balík usually means parcel or package, especially something wrapped and sent or carried as a postal item.

In the context of pošta (post office), parcel is often the best translation. So:

• malý balík = a small parcel

But in broader contexts, package can also work.

So the exact English word may vary a little depending on the situation, but the Czech word itself is completely natural here.

It strongly means that the speaker will take them along when going to the post office.

Because of s sebou, the focus is on bringing them with oneself.

So the idea is:

• Tomorrow, when I go to the post office, I’ll take a letter and a small parcel with me.

In practice, that often implies that the speaker may be bringing them there for mailing or handling, but the sentence itself mainly expresses taking them along to the post office, not necessarily what will happen to them afterward.