In Russian grammar, the Tenses Indicative Theory is an essential aspect of verb conjugation that determines the manner in which actions or states are expressed in relation to time. The theory identifies three tenses: past, present, and future, each with their variations and corresponding conjugation patterns.

The past tense refers to actions or states that have already occurred, and it can be further divided into perfective and imperfective aspects. The perfective aspect emphasizes the completion of an action, while the imperfective aspect focuses on the ongoing nature of the action. This distinction is reflected in the verb endings and prefixes used in conjugation.

The present tense signifies actions or states that are happening now or are considered to be habitual. It is characterized by specific verb endings, which also take into account the gender and number of the subject.

The future tense describes actions or states that will happen in the future. Its conjugation relies on specific prefixes added to the verb stem.

Mastering the Tenses Indicative Theory is crucial for expressing precise time frames in Russian and ensuring accurate communication.