This document discusses intonation in English. It begins by defining intonation as the pitch patterns used when speaking. It then discusses the differences between tone languages like Chinese and Vietnamese versus non-tone languages like English. The rest of the document covers tone units, the structure of tone units including the tonic syllable, head, pre-head and tail. It also discusses the different forms of intonation such as fall, rise-fall, fall-rise, rise and level. Finally, it examines the common uses of these tones with different types of sentences and questions.