The document provides information about the imperative, simple present tense, and simple past tense in Portuguese grammar. It defines the imperative as orders, commands, instructions or requests and gives examples of affirmative and negative forms. It then explains the formation, usage and examples of the simple present and past tenses, including irregular verbs. Exercises at the end test understanding of these grammar points.

24. This is a rabbit. This is a hare

25. The end!