This paper aims to comment on the format of a teaching material for the systematization of grammatical categories in the classes of Portuguese as a Foreign Language offered at UFRN to international students, immigrants living in Natal-RN and refugees. Based on the benefits that explicit language teaching can bring to the teaching/learning process, we set out a complementary teaching material to be used in parallel to other teaching resources that focus primarily on the other skills of reading, writing, listening and speaking. This teaching material starts in the focus on form within parts of sentences and builds up to the sentence level, activating the perception of grammatical meaning in sentences and short texts. We are concerned with meeting the needs of speakers whose mother tongues differ to a great extent from Portuguese, by offering aid in their task of recognizing and using unpredictable grammar categories.