Se perdo il treno, prendo il pullman per andare in città.

Italian often uses the present tense to talk about things that are generally true, habitual, or likely in the future, especially in sentences with se.

So Se perdo il treno, prendo il pullman means something like:

• If I miss the train, I take the bus
• or more naturally in English, If I miss the train, I’ll take the bus

This is very common in Italian. It does not sound strange to use the present here.

Yes. That is also correct.

The difference is mainly one of style and nuance:

• Se perdo il treno, prendo il pullman = more neutral, general, conversational
• Se perdo il treno, prenderò il pullman = a bit more clearly future, sometimes more deliberate or definite

In everyday Italian, the version with the present + present is extremely common.

Italian often drops subject pronouns when they are not needed.

The verb endings already show who is doing the action:

• perdo = I lose / I miss
• prendo = I take

So io is unnecessary unless you want to add emphasis or contrast:

• Se perdo il treno, io prendo il pullman, non il taxi.

Most of the time, simply saying perdo and prendo is enough.

Perdo is the first person singular form of perdere in the present tense.

Conjugation:

• io perdo
• tu perdi
• lui/lei perde
• noi perdiamo
• voi perdete
• loro perdono

In this sentence, perdere il treno means to miss the train, not literally just to lose the train.

For the same reason: prendo is the io form of prendere in the present tense.

Conjugation:

• io prendo
• tu prendi
• lui/lei prende
• noi prendiamo
• voi prendete
• loro prendono

Here prendere il pullman means to take the bus/coach.

Italian uses the definite article much more often than English.

So where English says:

• miss the train
• take the bus

Italian says:

• perdere il treno
• prendere il pullman

This is normal and idiomatic. In many transport expressions, Italian prefers the article.

Not always.

• autobus / bus usually means a regular city bus
• pullman often means a coach or a longer-distance bus

But in everyday speech, people sometimes use pullman fairly loosely. In a learning context, it is enough to know that here it means bus/coach.

So prendo il pullman = I take the bus/coach.

Per + infinitive often means in order to or to.

So:

• per andare = to go / in order to go
• in città = into town / to the city

Together:

• per andare in città = to go into town / to get to the city

It explains the purpose of taking the bus.

With città, Italian commonly uses in when talking about going to the city / into town:

• andare in città

This is just the normal idiomatic choice.

By contrast, with the name of a specific city, Italian usually uses a:

• vado a Roma
• andiamo a Milano

So:

• in città = into town / to the city
• a Roma = to Rome

Here it is singular: the city / town.

Città is one of those Italian nouns that has the same form in the singular and plural:

• la città = the city
• le città = the cities

The accent on à is part of the spelling and pronunciation.

The comma separates the if-clause from the main clause:

• Se perdo il treno, = if I miss the train
• prendo il pullman = I take the bus

This is very similar to English:

• If I miss the train, I take the bus.

In short sentences, punctuation can sometimes vary, but the comma is standard and helpful here.

Yes. Italian allows that.

You can also say:

• Prendo il pullman se perdo il treno.

That means the same thing: I take the bus if I miss the train.

The version with se first is often a little more natural when introducing the condition first.

Literally, perdere often means to lose, but in this expression it means to miss:

• perdere il treno = to miss the train
• perdere l’autobus = to miss the bus

This is a fixed and very common usage.

It can suggest either, depending on context.

Without extra context, it often sounds like a general plan or usual solution:

• If I miss the train, I take the bus.

But it can also refer to a future situation:

• If I miss the train tomorrow, I’ll take the bus.

Italian present tense is flexible enough to cover both ideas here.