The American intonation dictates liaisons and pronunciation, and it indicates mood and meaning.Without intonation, your speech would be flat,mechanical, and very confusing for your listener.

• 虽然美国有很多地区性的发音差别,但你将要学习的口音是美国标准发音,能够为大多数在美国受过教育的母语者使用和理解。