O Pedro ficou com lama nas sapatilhas depois do passeio.

In European Portuguese, it is very common to use the definite article before a person’s name in everyday speech.

So O Pedro simply means Pedro.

A native English speaker often expects this article to mean something special, but here it usually does not. It is just a normal Portuguese pattern, especially in Portugal.

• O Pedro = Pedro
• A Ana = Ana

You will often hear this in speech and see it in informal writing. In some formal contexts, the article may be left out.

Here, ficou com means something like:

• ended up with
• got
• was left with

So ficou com lama means Pedro ended up with mud on him, specifically on his trainers.

This is a very common use of ficar in Portuguese: it often shows a change of state.

• ficar cansado = to become tired
• ficar doente = to become ill
• ficar com lama = to end up with mud

So it is not best translated word-for-word as stayed with in this sentence.

Because lama is being used as an uncountable substance, like mud in English.

So com lama means with mud in a general sense, not with the mud.

This is similar to:

• com água = with water
• com areia = with sand
• com tinta = with paint

If you wanted to refer to specific mud, you might use an article or a longer phrase, for example:

• com a lama do caminho = with the mud from the path

But in the original sentence, the general mud idea is enough.

Nas is a contraction:

• em + as = nas

So:

• nas sapatilhas = em as sapatilhas

In correct Portuguese, the full form em as is normally not used here; it contracts to nas.

In this sentence, nas sapatilhas means the mud ended up on/in the trainers, depending on context. With mud and shoes, it will normally be understood as mud on the trainers.

In Portugal, sapatilhas usually means trainers or sneakers.

This is important because a learner may know that in other varieties of Portuguese, especially Brazilian Portuguese, sapatilha can refer to something different, such as a flat shoe or ballet-type shoe.

For Portugal Portuguese:

• sapatilhas = trainers / sneakers

So in this sentence, think of outdoor shoes used for walking.

Because Portuguese normally uses the plural for things that come in pairs, just like English often does.

So:

• as sapatilhas = the trainers
• os sapatos = the shoes
• as botas = the boots
• as meias = the socks

Even though it is one pair, the plural is the natural form.

Depois do passeio means after the walk, after the outing, or after the stroll, depending on context.

The noun passeio can have several close meanings, such as:

• a walk
• a stroll
• an outing
• a casual trip

It usually suggests something fairly ordinary and pleasant, not a major journey.

So the exact English translation depends on the context, but the grammar stays the same.

Because do is a contraction:

• de + o = do

After depois, Portuguese normally uses de:

• depois de

So when the next word is o passeio, it becomes:

• depois de o passeio → depois do passeio

These contractions are very common and are required in normal Portuguese.

Other examples:

• de + a = da
• em + o = no
• em + a = na

Because ficou highlights a result or change.

The idea is:

Pedro went for a walk, and as a result, he ended up with mud on his trainers.

Compare:

• O Pedro ficou com lama nas sapatilhas.
  = He ended up with mud on his trainers.

• O Pedro estava com lama nas sapatilhas.
  = He had mud on his trainers / he was with mud on his trainers.
  This describes the situation, but does not focus as strongly on how it happened.

• O Pedro tinha lama nas sapatilhas.
  = He had mud on his trainers.
  Also possible, but less focused on the change caused by the walk.

So ficou is a good choice when the sentence is about what happened after the outing.

Yes. Portuguese word order is flexible in many cases.

For example, you could also say:

• Depois do passeio, o Pedro ficou com lama nas sapatilhas.

This version puts the time phrase first and sounds very natural.

The original sentence is also natural. It simply presents the subject first:

• O Pedro → who
• ficou com lama nas sapatilhas → what happened
• depois do passeio → when / after what

So both orders work; the difference is mainly one of emphasis and flow.

In this sentence, it will normally be understood as on the trainers.

Portuguese often uses em for location in a broad way, and with clothes or footwear it does not always match English exactly.

So lama nas sapatilhas naturally suggests mud on the shoes. If you specifically wanted to say the mud was inside them, you would probably make that clearer, for example:

• lama dentro das sapatilhas = mud inside the trainers

Without that extra clarification, most people will understand the mud to be on the outside.

Yes. Here are a few natural alternatives, each with a slightly different feel:

• O Pedro sujou as sapatilhas com lama depois do passeio.
  Focuses more on the action/result: Pedro got the trainers dirty with mud.

• Depois do passeio, o Pedro tinha lama nas sapatilhas.
  A more neutral description of the situation afterwards.

• O Pedro voltou do passeio com lama nas sapatilhas.
  Focuses on how he came back from the outing.

The original sentence is very natural and especially good if you want to express that the walk resulted in muddy trainers.