The Tense Comparison Theory in Maori Grammar is a fundamental concept that deals with the comparison and contrast of different tenses in the Maori language. It provides a framework for understanding how different tenses function and interact with each other in Maori sentences.

According to the Tense Comparison Theory, there are three main tenses in Maori: the past tense, the present tense, and the future tense. These tenses differentiate time relationships within a sentence by using specific markers and verbal conjugations.

The past tense is used to express actions or events that have already happened in the past. It is marked by specific particles and affixes, such as “i” and “a,” and it often involves a change in the verb form.

The present tense, on the other hand, is used to express actions or states that are happening in the present. It is marked by certain particles and verb conjugations, and it indicates an ongoing or habitual action.

Lastly, the future tense is used to express actions or events that are yet to happen. It is marked by particular particles and verb conjugations, and it signifies an action or event that will occur in the future.

By understanding and applying the Tense Comparison Theory, learners of Maori can effectively construct grammatically correct sentences that convey the appropriate tense and time relationships.