What are the four types of intonation in English?

The four types of intonation in English are falling intonation, rising intonation, fall-rise intonation, and rise-fall intonation. Falling intonation is when the pitch of the voice falls at the end of a sentence, indicating finality. Rising intonation is when the pitch of the voice rises at the end of a sentence, indicating a question. Fall-rise intonation is a combination of falling and rising pitch within a sentence, often used in expressing uncertainty or surprise. Rise-fall intonation is when the pitch rises and then falls at the end of a sentence, indicating disbelief or disappointment.