如果一个英语老师拼命给你强调英语发音的重要性,大概率有两种情况:
1. 这个老师想卖给你发音课;
2. 这个老师除了发音之外不太会讲别的;
《中华人民共和国国家通用语言文字法》规定: 普通话是国家通用语言。普通话以北京语音为标准音,以北方话为基础方言,以典范的现代白话文著作为语法规范。

长期以来被中国和其它母语为非英语国家所学习的英式口音其实是RP(received pronunciation)
Received Pronunciation, commonly abbreviated as RP, is a variety of British English pronunciation that is traditionally associated with educated speakers in southern England. RP is often referred to as "the Queen's English" or "BBC English" due to its historical use in the British broadcasting media and the Royal Family.
Estimates in the early 21st century suggested that no more than 2–3 percent of the population spoke it at that time. (Britannica)


美国主要方言区分布
本期参考文献:
Kachru, B. (1985). Standards, codification and sociolinguistic realism: English language in the outer circle. In R.Quirk and H. Widowson (Eds.), English in the world: Teaching and learning the language and literatures (p. 11-36). Cambridge: Cambridge University Press.
