In the Thai language, noun clauses function as nouns in a sentence. These clauses can be a subject, an object, or a complement of a sentence. Just like the English language, noun clauses can be introduced by “that,” “how,” “what,” “why,” “where,” “if,” and “whether.” However, unlike English, Thai grammar follows subject-object-verb word order. Mastery of noun clauses is pivotal to achieving fluency in Thai.