1、The lights were all on.
燈都亮著。
2、The TV is always on in their house.
他們家的電視總是開著。
3、We were without electricity for three hours but it's on again now.
我們停電三個小時了，不過現在又來電了。
4、There was a war on at the time.
當時正值戰爭。
5、What's on at the movies?
電影院在上演什么片子？