YOU SAID:

Turn on the lights please

INTO JAPANESE

ライトをつけてください

BACK INTO ENGLISH

Please turn on the light

INTO JAPANESE

電気をつけてください。

BACK INTO ENGLISH

Please turn on the lights.

INTO JAPANESE

どうか電灯を消して下さい。

BACK INTO ENGLISH

Turn off the light, please.

INTO JAPANESE

どうか電灯を消して下さい。

BACK INTO ENGLISH

Turn off the light, please.