Intonation refers to the rising and falling pitch of one's voice. Intonation patterns can differ across languages and improper intonation in a new language can impact meaning. There are two main intonation patterns in English: rising intonation for yes/no questions and falling intonation for information questions. Question tags also use different intonation patterns depending on whether they are confirming information or asking for clarification. Specific intonation is used with commas, introductory clauses, and other grammatical structures to clarify meaning.