Prendo il solito treno ogni mattina.

In Italian, the subject pronoun is often omitted because the verb ending already shows who is doing the action.

• prendo = I take
• The -o ending tells you the subject is I

So Prendo il solito treno ogni mattina is completely natural.
You could say Io prendo..., but that usually adds emphasis, as in I take the usual train.

Prendo is the present indicative of prendere.

Italian uses the present tense not only for actions happening right now, but also for:

• habits
• routines
• general facts

So in this sentence, the present tense expresses a regular habit: taking the usual train every morning.

The infinitive is prendere, which usually means to take.

In this sentence, prendere il treno means to take the train or to catch the train.

Italian normally uses an article where English sometimes does too, and sometimes does not.

Here:

• il = the
• solito treno = usual train

So il solito treno means the usual train.

In Italian, you generally need the article before a noun in this kind of phrase.

Solito means usual, same as always, or sometimes the same old depending on context.

In il solito treno, it means:

• the train I normally take
• the usual one
• the same one as always

It often refers to something familiar or habitual.

In Italian, many common descriptive adjectives can come before the noun, especially when they express a familiar or general quality rather than a technical description.

So:

• il solito treno = the usual train

This word order is very natural.
Putting solito after the noun would sound different and is not the normal choice here.

Yes, solito already helps express the idea of habit, but it modifies treno, not the whole action.

• il solito treno = the usual train
• ogni mattina = every morning

Together they show a routine: every morning, I take the usual train.

If you wanted to say I usually take the train, that would be different, for example:

• Di solito prendo il treno

Here, di solito means usually and modifies the whole sentence.

Because ogni is followed by a singular noun in Italian.

So:

• ogni mattina = every morning
• not ogni mattine

This is a very common pattern:

• ogni giorno = every day
• ogni settimana = every week
• ogni anno = every year

Yes. Both are natural and often mean the same thing here.

• ogni mattina = every morning
• tutte le mattine = every morning / all mornings

They are very close in meaning.
Ogni mattina may sound a little more compact and general, while tutte le mattine can feel slightly more emphatic, but in everyday speech they are often interchangeable.

Because expressions of time like ogni mattina often work directly as adverbial phrases in Italian.

So Italian simply says:

• ogni mattina = every morning

No preposition is needed, just like in English.

Yes, Italian word order is fairly flexible.

For example, you could also say:

• Ogni mattina prendo il solito treno.

This means the same thing, but it puts more focus on the time expression every morning.

The original order is perfectly natural, and so is this alternative.

In this sentence, it means I take, because it describes a habit.

Italian present tense can sometimes correspond to English I am taking, but not here.
Because of ogni mattina, the habitual meaning is clear.

So the best interpretation is:

• I take the usual train every morning

Sometimes solito can sound slightly negative, depending on tone and context, especially in expressions like:

• la solita storia = the same old story
• il solito problema = the usual problem / the same old problem

But in il solito treno, it is usually neutral. It just means the usual train, the one the speaker normally takes.

Because the sentence refers to the train taken on each occasion as the usual train—the same regular one in the speaker's routine.

Italian uses the singular naturally here:

• il solito treno = the usual train

Even though the action repeats every day, the noun stays singular because it refers to the one regular choice in the routine.