The runners have been in their lanes. They are doing warming-up exercises.

赛跑选手们已经站到了各自的跑到上，在做着暖身运动。

After warming-up exercises the teacher told us the way of long jump and showed us how to do it.

在热身练习后，老师告诉我们跳远的方法，并告诉我们如何做它。

After warming-up exercises, the teacher told us the way of long jump and showed us how to do it.

经过热身运动之后，老师告诉我们跳远的方法，也向我们展示了如何做跳远运动。

After warming-up exercises, the teacher told us the way of long jump and showed us how to do it. Then we followed the teacher and practised one after another.

准备活动完后，老师告诉我们跳远的方法并做了示范，然后我们就跟着老师一个一个地练习。

It is an important job for teachers to understand the importance of warming-up exercises and to effectively organize in proper way and in proper time in P. E training.

正确地认识准备活动的作用，有效地选择准备活动的内容与组织形式，合理地安排好准备活动的时间，是体育教师都应重视的问题。