Sentence Theory in Bulgarian Grammar is a fundamental aspect of understanding the structure and function of sentences in the Bulgarian language. The theory provides a framework for analyzing sentences based on their constituents and the relationships between them.

According to this theory, a sentence in Bulgarian consists of a subject (the doer of the action) and a predicate (the part of the sentence that provides information about the subject). The subject can be a noun, pronoun, or even an entire clause, while the predicate typically consists of a verb and any accompanying modifiers or complements.

Another important aspect of Sentence Theory is the distinction between simple and complex sentences. Simple sentences contain only one subject and one predicate, while complex sentences consist of multiple clauses and have more intricate structures.

Understanding Sentence Theory allows learners of Bulgarian to properly identify and analyze the various components of a sentence, ensuring accurate interpretation and effective communication. It also provides a foundation for more advanced grammatical concepts, such as clause types, voice, mood, and tense, which are all interconnected with sentence structure.