| 1. | Students are banging away at their homework .
学生专心做功课。 |
| 2. | He was up betimes doing his lessons .
他及时做功课。 |
| 3. | Every moving object has the capacity to do work .
每一个运动的物体都具有做功的本领。 |
| 4. | While it is moving, it has the capacity for doing work .
当它在运动时，就具有做功的能力。 |
| 5. | I got him to do homework .
我说服他去做功课。 |
| 6. | It is not necessary that the moving object actually do work .
运动着的物体不一定实际上在做功。 |
| 7. | Work was done in turning the paddle wheel against the resistance of the water .
转动搅拌轮，克服水的阻力做功。 |
| 8. | Work is done on the device and simultaneously work is done by the device .
对这种机械做功的同时，机械也对外界做功。 |
| 9. | When work is done on something, on the other hand, energy is added to it .
从另一方面说，对一个物体做功，就是对一个物体提供能量。 |
| 10. | There is energy working around us all the time whether we are aware of it or not .
在我们周围总是有能量在做功，不管我们是否察觉到它。 |
