How the word "oi" is translated into English
Oi, Inês! Tudo bem?
Oi, mãe, já cheguei a casa.
Ele disse oi e foi embora.
"oi" is in the lesson "Conversation" (Level 36), along with 15 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.
