面对这种情况，将栏间三步跑的教学模式改为四步模式，并引入教学实践过程中进行探索性的尝试。

To counter this condition, the writer has changed from three-pace run to four-pace run based on his teaching experience inh.

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究其原因是多方面的，其中最主要的原因是传统的栏间跑三步模式教学法不适应广大中学生，从而造成教学上的困难。

Of the many reasons, the most important reason is that the traditional teaching method of three-pace run between the hurdles doesn't adjust most students.

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其次，每一跨栏周期中速度的变化及每一跨栏周期中步长的分配也对栏间节奏产生重要影响，栏间节奏与运动成绩密切相关。

Next, the change of speed and the change of step in hurdles circuit effect on it too. The rhythm correlates with the sport grades closely.

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