/ɪnˈtrɒdʌktəri klɔːz/ – Phrase
Definition: Phần mở đầu của một văn bản.
A more thorough explanation: An introductory clause is a grammatical structure that appears at the beginning of a sentence and provides additional information about the main clause that follows. It typically consists of a subject and a verb, but does not form a complete sentence on its own.
Example: In the case of Smith v. Jones, the introductory clause of the contract clearly stated the obligations of each party.