Turn off the lights, Julia.

关灯，朱莉娅。

They may turn off the lights and light candles.

他们可能会关灯点蜡烛。

Can you help me turn off the lights?

你能帮我关灯吗？

Turn off the lights before you leave.

在你离开之前，请关灯。

Please turn off the lights before you leave.

请在离开前关灯。

Remember to turn off the lights when you are away.

当你走了的时候，记得关灯。

Remember to turn off the lights before going to bed.

睡觉前记得关灯。

Lastly, remember to turn off the lights before you leave.

最后，记得离开前关灯。

I always turn off the lights when I leave the room.

每次离开房间时，我都会关灯。

I forgot to turn off the lights before going to bed.

我忘记睡觉前关灯了。