In Maori grammar, the Sentences Theory revolves around the structure and formation of sentences in the language. The fundamental principle is that a sentence is made up of a subject and a predicate. The subject is generally the agent or the doer of the action, while the predicate conveys the action or state of being.

One important aspect of the Sentences Theory is the use of word order to convey meaning. In Maori, the word order is generally subject-verb-object, although it is not as fixed as in other languages. This flexibility allows for emphasis and nuance in sentence formation.

Additionally, the Sentences Theory recognizes the presence of particles in Maori sentences. These particles can convey various meanings, such as indicating tense, mood, or possession. Understanding the correct placement and usage of these particles is crucial for constructing grammatically correct and meaningful sentences.

Overall, the Sentences Theory in Maori grammar provides a framework for understanding the structure and formation of sentences in the language. By following the principles and rules outlined in this theory, learners can effectively communicate in Maori.