你可以用随身携带的MP3播放器来练习听力，将你听懂的或部分听懂的有趣的外文段子朗读出来，如果你坚持这么做，你将习惯于外文的语言组织方式，一小时的听力和朗读自学训练比几个小时的课堂学习更有效率。

If you keep listening and reading you will get used to the language. One hour of listening or reading is more effective than many hours of class time.

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This material will be necessary to do the listening exercises for the course, which is sort of the backbone of the course.

做听力练习时我们必须使用这些材料,听力训练是课程的核心内容

耶鲁公开课 - 聆听音乐课程节选