«Portuguese is grammatically similar to other Romance languages. One attractively simple feature is its interrogative form, which is expressed by intonation alone, not through rearranging phrases. We’re leaving now can become a question just by raising one’s voice at the end (“We’re leaving now?”) which is a natural linguistic habit of English speakers anyway. In Brazilian Portuguese, questions can also be posed through one catchall question tag: não é?
Though the nasal vowel sounds of Portuguese may be difficult to pronounce at first, its rhythmic tone is easy for English ears to follow.»
Try it yourselves!