O envio tem um número do objeto.

Because Portuguese often uses the definite article where English would not. O envio refers to a specific shipment already known from the context.

If you say just envio, it sounds more general, more like a label, or less complete as a normal sentence. In everyday Portuguese, o envio is the natural choice here.

Yes. Envio is masculine singular, so it takes o:

• o envio
• um envio

It comes from the verb enviar and means something like shipment, sending, or dispatch, depending on context.

Because the subject is singular: o envio.

• o envio tem = singular
• os envios têm = plural

This is a very important spelling difference in Portuguese:

• tem = he/she/it has
• têm = they have

So in this sentence, tem is correct because there is only one shipment.

Tem is the present tense of the verb ter, meaning to have.

So grammatically, the sentence structure is:

• O envio = subject
• tem = verb
• um número do objeto = object/complement

It works just like English has in this sentence.

Because um is the indefinite article, meaning a or one.

So um número means a number. Portuguese normally includes the article here, just as English does.

In some very bureaucratic or note-like writing, you might see article omission in other contexts, but in a full normal sentence, tem um número is the expected form.

Do is the contraction of de + o.

So:

• de + o = do
• de + a = da
• de + os = dos
• de + as = das

In standard Portuguese, de o is normally not used as two separate words here. The contraction is required, so número do objeto is correct.

Portuguese usually expresses possession with de, not with an apostrophe like English.

So English:

• the object's number

becomes Portuguese:

• o número do objeto

Literally, this is the number of the object/item, but it is the normal Portuguese way to express possession.

In ordinary Portuguese, yes, objeto often means object. But in postal or shipping language, objeto is an official term for a postal item, parcel, or mail piece.

So in this sentence, número do objeto is not talking about a random physical object in the everyday sense. It is a technical or official postal expression.

That is why it may sound a bit strange if translated word for word into English.

It sounds fairly official or system-generated, which is common in postal, courier, or tracking contexts.

In more everyday speech, people might also say things like:

• número de seguimento
• código de rastreio

Those often sound more natural in casual conversation. But número do objeto is perfectly possible in official Portuguese, especially in postal terminology.

Often, yes, but the nuance changes a little.

• envio focuses more on the shipment or sending process
• encomenda usually refers more directly to the parcel/package/order

So:

• A encomenda tem um número de seguimento sounds very natural in everyday speech
• O envio tem um número do objeto sounds more official or technical

Both can be correct, depending on context.

A rough pronunciation guide is:

u en-VEE-u tein u(n) NOO-me-ru du ob-ZHE-tu

A few European Portuguese notes:

• o at the beginning often sounds like u
• tem has a nasal sound
• um is also nasal
• unstressed vowels are often reduced more than in English or Spanish

A more technical IPA-style version is approximately:

[u ẽˈvi.u tẽj̃ ũ ˈnumɨɾu du ɔbˈʒɛtu]

You do not need to reproduce that perfectly at first; the main thing is to notice the reduced vowels and the nasal sounds.