英语语音与书面语拼写方式之间的差异，语音在快速连贯口语中发生变化，英语口语的韵律模式，“同一个”音有不同的发音方式等是产生听力困难的主要原因。要克服听力困难，教师除了采取必要的教学手段外，还必须让学生了解一些影响语音的重要因素，并注意学生其它方面能力的培养 Differences between English phonetic and written phonetic spelling, the change of phonetics in fast coherent oral English, the prosodic model of spoken English and the different phonetics of “one” phonetic transcription are the main causes of hearing difficulty. To overcome hearing difficulties, teachers should not only adopt the necessary teaching methods, but also have students understand some important factors that affect pronunciation and pay attention to the cultivation of students’ other abilities