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(kāi)著。

　　3、We were without electricity for three hours but it's on again now.

　　我們停電三個(gè)小時(shí)了，不過(guò)現(xiàn)在又來(lái)電了。

　　4、There was a war on at the time.

　　當(dāng)時(shí)正值戰(zhàn)爭(zhēng)。

　　5、What's on at the movies?

　　電影院在上演什么片子？