The Tenses Potential Theory is an important concept in Finnish grammar. It refers to the idea that the potential mood and the infinitive mood together can express all the different tense forms in Finnish.

In Finnish, there are three basic tenses: present, past, and perfect. Each of these tenses has a different way of expressing them using the tenses potential theory.

For example, in the present tense, the potential mood is used to express actions that are possible or likely to happen. The infinitive mood is used to express actions that are uncertain or hypothetical.

In the past tense, the potential mood in combination with the infinitive mood is used to express actions that have happened in the past.

In the perfect tense, the potential mood and the infinitive mood are used together to express actions that have been completed in the past.

The Tenses Potential Theory is an innovative approach to understanding the intricacies of Finnish grammar and is essential for learners to grasp the various tenses in the language.