If you're studying for an official exam like the CAPLE (CIPLE or DEPLE), this book is excellent for drilling the specific "fill-in-the-blank" structures often found in the grammar portion of those tests. Gramatica Ativa 1 | PDF - Scribd
The structure of Gramática Ativa is famous for its three-step process. gramatica ativa 1 pdf
The official book includes access to online audio (via QR codes or a CD). The audio contains pronunciation exercises, listening comprehension, and repeating drills. Without audio, you are learning a silent, academic version of Portuguese, which will not help you understand a fast-speaking Lisbon shopkeeper. If you're studying for an official exam like