Or, maybe speaking about the answer to the questions on the Problem Set NO.4 will help you to think this through.

习题册上第四题的答案,也许会对你们有所帮助

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Most frequently, chord changes come on the downbeat so composers signal to us in a fourth way the downbeat by means of chord change.

通常,和弦的变化都在重拍上,所以作曲家们用这第四种途径,通过和弦的变化告诉我们重拍的位置

耶鲁公开课 - 聆听音乐课程节选

So with that said, perhaps just to add to that, the fourth passage: "Beauty is the form of the purposiveness of an object so far as it is perceived in it without any representation of a purpose."

所以据上所述，啊，再加一点，现在看，第四篇文章：，“美是事物存在的目的,尽管这种合目的性并不是显而易见的，你可能要问了“

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So we've got a I chord built on the first degree of the scale, a V chord built on the fifth degree of the scale, a IV chord built on the--a IV chord built on the fourth degree, and a VI chord built on the sixth degree.

这样我们就有了建立在第一音级上的I和弦，第五音级上的V和弦，第四音级上的IV和弦，以及第六音级上的VI和弦。

耶鲁公开课 - 聆听音乐课程节选