In Turkish grammar, the Pronouns/Determiners Theory plays a crucial role in understanding the structure and meaning of sentences. Pronouns and determiners are words that are used to replace or specify nouns.

Pronouns in Turkish replace nouns, functioning as the subject, object, or possessive pronouns. They indicate gender, number, and case, and can be personal (ben, sen, o) or demonstrative (bu, şu, o). Determiners, on the other hand, modify nouns by indicating quantity or definiteness. They can be articles (bir, her, o), possessive pronouns (benim, senin, onun), demonstrative pronouns (bu, şu, o), or interrogative pronouns (kim, ne, hangi).

Understanding the pronouns and determiners in a sentence is necessary for correctly interpreting the subject, object, and possession relationships between words. They provide crucial information about the gender, number, case, and specificity of a noun, allowing for precise communication.

Overall, the Pronouns/Determiners Theory is an essential aspect of Turkish grammar, enabling learners to correctly use pronouns and determiners to convey meaning accurately in sentences.