O aplicativo CNH do Brasil mostra o endereço cadastrado.

CNH stands for Carteira Nacional de Habilitação, which is Brazil’s official driver’s license.

In everyday Brazilian Portuguese, people very often just say CNH instead of the full name.

O is the masculine singular definite article, meaning the.

So:

• o aplicativo = the app

In Portuguese, articles are used more often than in English. A full sentence like this normally sounds more natural with o.

Because do is a contraction of:

• de + o = do

So:

• do Brasil literally looks like of the Brazil, but in natural English it is usually understood as of Brazil, from Brazil, or Brazil’s, depending on context.

Portuguese uses these contractions all the time:

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

It can be read as a descriptive phrase unless context makes it clear that it is an official title.

Structurally, o aplicativo CNH do Brasil can sound like:

• the CNH app from Brazil
• Brazil’s CNH app

If it were a formal app name, writing style or branding might make that clearer. In ordinary grammar terms, CNH do Brasil is functioning like a noun phrase that identifies which app we mean.

Mostra is the third-person singular present indicative form of the verb mostrar (to show).

So:

• mostrar = to show
• mostra = shows

Because the subject is o aplicativo (the app), the verb is singular:

• O aplicativo mostra = The app shows

In Portuguese, adjectives usually come after the noun.

So:

• o endereço cadastrado = the registered address

Here:

• endereço = address
• cadastrado = registered / on file / entered in the system

Putting cadastrado after the noun is the normal order.

Cadastrado comes from the verb cadastrar, which means to register, to enter into a system, or to put on file.

In this sentence, cadastrado is acting like an adjective and means something like:

• registered
• on file
• saved in the system

So o endereço cadastrado is not just any address; it is the address that has already been registered in the app or database.

Because cadastrado must agree with endereço, and endereço is a masculine singular noun.

Agreement in Portuguese:

• masculine singular: cadastrado
• feminine singular: cadastrada
• masculine plural: cadastrados
• feminine plural: cadastradas

Examples:

• o endereço cadastrado
• a informação cadastrada

Because the sentence refers to a specific address: the one that is registered.

So:

• mostra endereço would sound incomplete or unnatural here
• mostra o endereço cadastrado sounds natural and specific

Portuguese commonly uses the definite article where English may or may not use the.

Usually, endereço means an address, especially a physical mailing/street address. In modern usage it can also mean an electronic address, such as:

• endereço de e-mail = email address
• endereço IP = IP address

In this sentence, because of cadastrado and the context of CNH, it most likely means the address registered in official records.

In Brazilian Portuguese, endereço is pronounced approximately like:

• en-de-RE-soo

A few useful notes:

• ç makes an s sound
• the stress falls on re
• the final o in Brazilian Portuguese is often pronounced like oo

A more careful approximation would be: ehn-deh-REH-soo

A rough Brazilian Portuguese pronunciation is:

O a-pli-ca-TI-vo ce-ene-aga do bra-ZIL MOS-tra u en-de-RE-soo ca-das-TRA-doo.

A few notes:

• CNH is usually said letter by letter in Portuguese:
  • C = cê
  • N = ene
  • H = agá
• mostra is stressed on mos
• Brasil is stressed on the last syllable: bra-ZIL
• cadastrado is stressed on tra

Not directly in grammar terms, although the overall idea may sometimes be similar.

• do Brasil = of/from Brazil
• brasileiro = Brazilian

These are not interchangeable word-for-word.

For example:

• aplicativo do Brasil = app from Brazil / Brazil’s app
• aplicativo brasileiro = Brazilian app

Those can overlap in meaning, but the structure is different.

The structure is:

• O aplicativo CNH do Brasil = subject
• mostra = verb
• o endereço cadastrado = direct object

So the pattern is:

Subject + Verb + Object

This is a very common and straightforward Portuguese sentence order, just like in English:

• The app
  • shows
    • the registered address