1、We have gained some knowledge about electric power on physics class at high school.
在高中物理課上，我們學到了一些與電力相關的知識。

2、Experiments in physics class are the bases, contents, and effective methods in teaching physics.
物理實驗是物理教學的重要基礎、內容、方法和手段。

3、Shall we have physics class today?
我們今天有物理課嗎？

4、All the students in my Physics class are in 12 grades.
物理班上的同學都是12年級的。

5、We will be having a physics class this time tomorrow.
明天的這個時候，我將在上歷史課。