Na další zastávce musíme vystoupit a přestoupit na metro.

This phrase sets the scene first: at the next stop.

In Czech, it is very common to begin a sentence with information about time or place before the main action. So:

• Na další zastávce = at the next stop
• musíme vystoupit a přestoupit na metro = we have to get off and change to the metro

This word order sounds natural in Czech. You could rearrange it, but this version is the most straightforward and context-friendly.

Because na can take different cases depending on the meaning.

Here, na další zastávce means at the next stop, so it expresses a location. That requires the locative case:

• na zastávce = at the stop

If you said na další zastávku, that would be onto/to the next stop, which expresses direction and uses the accusative.

So compare:

• Jsme na zastávce. = We are at the stop.
• Jedeme na zastávku. = We are going to the stop.

Zastávce is in the locative singular.

The basic form is:

• zastávka = stop

After the preposition na, when it means at/on in a location sense, Czech uses the locative:

• na zastávce = at the stop

The ending changes like this:

• nominative: zastávka
• locative: zastávce

This is a regular pattern for many feminine nouns ending in -ka.

Další means next or another, depending on context.

In this sentence, it clearly means the next:

• další zastávka = the next stop

It does not change its form much here because it agrees with zastávce in gender, number, and case. You are seeing the feminine singular locative form, but další happens to look the same as in several other forms.

Musíme is the 1st person plural form of muset, which means must / have to.

So:

• muset = to have to / must
• musíme = we have to / we must

That matches the implied subject we.

A few forms of muset:

• musím = I have to
• musíš = you have to
• musí = he/she/it has to
• musíme = we have to
• musíte = you all / you formal have to
• musí = they have to

Because after muset, Czech normally uses an infinitive, just like English uses have to + verb.

So:

• musíme vystoupit = we have to get off
• musíme přestoupit = we have to change

This is a very common structure:

• Musím jít. = I have to go.
• Musíte čekat. = You have to wait.

In your sentence, one musíme controls both infinitives:

• musíme vystoupit a přestoupit
• literally: we have to get off and transfer

They are two different verbs with different prefixes:

• vystoupit = to get off, step out, exit a vehicle
• přestoupit = to change, transfer from one vehicle/line/system to another

So in this sentence:

• vystoupit = get off the current vehicle
• přestoupit na metro = change to the metro

The prefixes help carry the meaning:

• vy- often suggests out
• pře- often suggests across / over / change

These verbs are very common in travel situations.

Because přestoupit na is the normal Czech pattern for change to / transfer to another means of transport.

So:

• přestoupit na metro = change to the metro
• přestoupit na autobus = change to a bus
• přestoupit na vlak = change to a train

Even though English says change to, Czech uses na + accusative here.

This is something best learned as a fixed combination:

• přestoupit na + accusative

Because metro is a neuter noun, and in this sentence it is in the accusative singular after na with motion/change meaning.

For metro, the nominative and accusative forms are the same:

• nominative: metro
• accusative: metro

So you do not see a change in form here, even though the case is important.

Compare with another noun where the form is clearer:

• přestoupit na autobus
• přestoupit na tramvaj

The case is still accusative, but some nouns show it more clearly than others.

They are perfective because the sentence refers to specific completed actions in a travel sequence:

1. get off
2. transfer to the metro

The idea is not we must be getting off in general or we usually get off. It is we need to do these actions once, at the next stop.

So perfective fits well:

• vystoupit = get off completely
• přestoupit = make the transfer successfully

Their imperfective partners would be:

• vystupovat
• přestupovat

Those would be used in different contexts, for example repeated or ongoing action.

Yes. In Czech, just like in English, you normally do not put a comma before a when it simply joins two verbs or two coordinated parts of a sentence.

Here it joins two infinitives:

• vystoupit a přestoupit

So no comma is needed.

You would only use a comma if the structure were more complicated, for example with a subordinate clause or some kind of interruption.

In normal Czech travel language, přestoupit na metro is the natural choice.

Using do metra would sound less idiomatic here. Na metro expresses changing to that transport system/line/mode. It is the standard collocation.

So the most natural phrasing is:

• přestoupit na metro

This is one of those places where prepositions do not match English literally and simply need to be learned as part of the verb.

A simple pronunciation guide is:

Na další zastávce musíme vystoupit a přestoupit na metro.

Approximate pronunciation: na DAL-shee ZAS-taaft-seh MOO-zhee-meh VIS-toh-peet a PRZHEST-toh-peet na MEH-troh

A few helpful points:

• Czech stress usually falls on the first syllable of each word.
• š sounds like sh
• á is a long vowel
• ou sounds roughly like the vowel in go but as a diphthong
• ř in přestoupit is a special Czech sound; learners usually need practice with it

Also note that na další zastávce is often pronounced smoothly as one phrase in connected speech.