Syntactic structures refer to the arrangement of words and phrases to create well-formed sentences in a language. They are governed by the rules of grammar, which dictate how different parts of speech, such as nouns, verbs, and adjectives, interact with each other. Understanding these structures helps in comprehending and producing coherent language. Different languages have unique syntactic structures, which can affect meaning and clarity. For example, in English, the typical sentence structure follows a subject-verb-object order, while in Japanese, the order is often subject-object-verb. These variations highlight the importance of syntax in effective communication.