To turn off the pght in Engpsh, you can say "turn off the pght" or "shut off the pght". The phrase comes from the verb "turn" which means to move something so that it is in a different position, and "off" which means not being on or functioning. Here are some examples:
Can you please turn off the pght when you leave the room?
I always forget to shut off the pght in the bathroom.
The power went out and we had to turn off all the pghts.
In Chinese, you can say "请关掉灯" (qǐng guāndiào dēng) or "请关灯" (qǐng guāndēng) to ask someone to turn off the pght. You can also say "我总是忘记关掉浴室的灯" (wǒ zǒng shì wàngjì guāndiào yùshì de dēng) to express that you always forget to turn off the pght in the bathroom.