過去一直酌麽英語到底有幾種語調，看來注意四種語調就足夠了

Cruttenden (1986) recognizes seven tones (high-fall, low-fall, high-rise, low-rise, fail-rise, rise-fall, and mid-level).

It appeared in the author's teaching experience that only four types of tones can be efficiently taught to non-native speakers of English:

• fall
• low-rise
• high-rise
• fall-rise