European Portuguese - 'Tu não percebes'
Brazilian Portuguese - 'Você não percebe'
Sounds like you want to say that you don't understand, not literally 'you don't understand' in which case it's: (eu) não percebo
Brazilian or European?
European is Tu Nao percebees
Brazilian is Voce nao percebe
Não sei falar português. ( Naun say faalar portoogezi)
I don't understand.
"Entender" is how you say "understand" in Portuguese.
The Portuguese equivalent of the English sentence 'I don't understand you' is the following: Eu nao entendo voce. The Portuguese pronunciation is the following: AY-oo now een-TEHN-doo voh-SAY. The word-by-word translation is the following: 'eu' means 'I'; 'nao' 'not'; 'entendo' '[I] understand'; and 'voce' 'you'.
Não sejas um estranho
You would say "what do you what" in Portuguese as "o que voce o que". It is easy to use a translator like Google Translate to understand foreign words.
European Portuguese - 'Tu não percebes' Brazilian Portuguese - 'Você não percebe' Sounds like you want to say that you don't understand, not literally 'you don't understand' in which case it's: (eu) não percebo Brazilian or European? European is Tu Nao percebees Brazilian is Voce nao percebe
Não entendo o que você escreveu.
I need more context to provide an accurate example. If you mean "understand" as a verb, you can use it like this: "I understand the instructions clearly." If you mean "understand" as a noun, you can say: "His lack of understanding led to confusion."
just say i dont understand
you just say "sorry can you say that again (please if needed)" :)
i dont understand what your trying to say
to say language in portuguese, you would say 'lingua'