每一种语言都有其特有的语音系统和发音规律,人们在学习一门外语时或多或少在发音上会受到母语语音特征的影响。对我国广大英语学习者来说,母语并非是普通话,而是方言。因此研究方言对二语习得的影响对英语语音教学有重要指导意义。初步探讨南通地区十二名男生在元音//和/au/的习得情况,分析原因并提出教学意见。 Every language has its own unique phonetic system and phonetic transcription rules that people are more or less affected by pronunciation of native speakers while learning a foreign language. For our majority of English learners, their native language is not Mandarin, but dialect. Therefore, the influence of research dialect on second language acquisition is of great guiding significance to English phonetic teaching. Preliminary study is conducted on the acquisition of vowels /  / and / au / by 12 boys in Nantong area, analyzing the reasons and putting forward teaching suggestions.