

A estrada curva à esquerda logo a seguir à ponte.
Não deves curvar as costas quando pegas em pesos.
Os ramos da árvore curvavam-se com o peso das laranjas.
"curvar" is in the lesson "Verbs 6" (Level 18), along with 11 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.