"1) I always hear "Obrigado/a, viu?" What is the meaning of "viu" in this context?" The meaning is the same as "ok?" in the end of any sentence. "Thank you, ok?". You will also see "Obrigado, tá?" and it's the same thing. Maybe it doesn't make any sense in english, but that's how we speak. hahah "2) In stead of "de nada" people use "imagina" or "que isso". How do these expressions have the meaning of "you're welcome"?" These expressions are the same as "de nada". English speakers also use another words to reply to "thank you", like: "My pleasure", "no problem" and "sure thing". 3) I don't quite get the use of "valeu", any examples? First of all, there is the verb "valer": https://www.linguee.com/english-portuguese/search?source=auto&query=valer Besides that, "valeu" is used to show gratitude. Thank you! = Valeu! Thanks, man. = Valeu, cara. Thank you for coming! = Valeu por ter vindo! It's also used to say goodbye, but it's too informal. It's a thing you mostly see younger people saying. I hope it helped.

Hi There! 1) "viu", in your example, is used to emphasize that the person really appreciates your help. "Viu" is like "I just want to make sure you know how grateful I am". It is hard to translate into English. Ex: Gostei muito (= I liked it a lot), viu? 2) "de nada", " imagina", " que eh isso" are just other ways to say " you are welcome", just as in English we say "no problem", "no worries", etc. Slightly more informal than "De nada" 3) "valeu": a very informal way to say " thanks!" Hope this helps. Let me know if you have more questions. Veronica

Valeu!!