YOU SAID:

The lights turned on before I could finish sleeping.

INTO JAPANESE

寝るのが終わる前に明かりがつきました。

BACK INTO ENGLISH

I turned on the light before I finished going to bed.

INTO JAPANESE

寝る前に明かりをつけた。

BACK INTO ENGLISH

I turned on the light before going to bed.

INTO JAPANESE

寝る前に明かりをつけた。

BACK INTO ENGLISH

I turned on the light before going to bed.