28 sentences to exercise the syntactic analysis of the simple, compound, hidden, indeterminate and non-existent subject, in the simple period. The phrases belong to the game "Domino of syntactic analysis", they accompany fixation exercises, the answer keys and the rules of the game. A teaching method tested by dozens of students in Brazil. This example, which has cut-out pieces, contributes to a playful experience with the teaching and learning of the types of subject, an essential term of the s