Intonation English System

 The mentioned outlined intonation patterns are certainly not obligatory. The risk with these approaches is that one might end up making generalizations that are too broad and will have little power to predict with accuracy the intonation that a speaker will use in a particular context. Moreover generalizations like these are very broad and foreign learners do not find it easy to learn to use intonation through studying them. An intonation function is perhaps the most controversial topic relating phonetics and so it is not possible to draw any definite sketch regarding it.