As a newcomer to the Portuguese language, you'll probably find yourself struggling to communicate from time to time. Don't worry — no one learns a new language overnight. Use these handy phrases to explain your situation:   I don't speak Portuguese - Não falo Português - (Nah-oom fah-looh poor-too-gess) I speak English: Falo Inglês (Fah-looh inn-glesh) Do you speak English?: Fala inglês? (Fah-lah inn-gless) — formal Do you speak English?: Você fala inglês? (Voh-say fah-lah inn-gless) — informal I don't understand: Não percebo (Nah-oo pehr-say-boo) Could you repeat that?: Pode repetir? (Poh-day reh-peh-teer) Learning how to be polite in Portuguese is very important — you certainly don't want to tarnish your native country's reputation by accidentally being rude. Use these words and sayings to make sure you stay in the good graces of the people you talk to:  Please: Por favor (Pooh-r fah-voh-r) Thank you: Obrigado/a (Oh-bree-gah-dooh/dah) — use the male form if you are male and the female form if you are female. Obrigado is the male form, and obrigada the female form.  You're welcome: De nada (Dee nah-dah) — informal You're welcome: Não tem de quê (Nah-oomm tah-eehm the queh) — formal I'm sorry: Desculpe (Desh-cool-pee) ) Knowing how to ask a few basic questions about the Portuguese-speakers you meet will go a long way towards making you new friends. Use these questions and responses to have a very basic conversation:   What is your name?: Como o/a senhor/a se chama? (coh-moh sen-your/-ah se shahm-ah)— formal. Note that, in this case, the male form of senhor has no "o" ending. What's your name?: Qual é o seu nome? (Coh eh-oh seh-oh no-mee) — informal My name is...: Me chamo [your name] (Mee sham-oh) Where are you from?: De onde o/a senhor/a é? (Djee own-djah oh/ah sen-your/ah eh) Where are you from?: De onde você é? (Djee own-djah voh-say eh)— informal I'm from...: Eu sou de [your hometown] (Ee-oh so-oo djee) What's happening / what's going on?: O que aconteceu? (Oo key ah-cone-teh-see-oo) Not every adventure...

TL;DR in Vietnamese:
Học cách nói về ngôn ngữ này. Học câu giao tiếp lịch sự. Học cách nói về người khác (và cách trả lời). Học cách nhờ giúp đỡ.