Grammatical relations refer to the connections between words in a sentence that help convey meaning. These relations often involve the roles that different words play, such as the subject, object, and verb. For example, in the sentence "The cat (subject) chased (verb) the mouse (object)," the grammatical relations clarify who is doing the action and who is receiving it. Understanding grammatical relations is essential for constructing clear and coherent sentences. They help determine how words interact and influence each other, which is crucial for effective communication. By recognizing these relationships, speakers and writers can create sentences that accurately express their intended ideas.