YOU SAID:

i was studying in the graveyard, when suddenly a football player started turning on the lamps.

INTO JAPANESE

墓地で勉強していた時突然フットボール選手がランプをつけ始めた

BACK INTO ENGLISH

When I was studying at the cemetery, a football player suddenly started to turn on the lamp.

INTO JAPANESE

墓地で勉強していたら突然サッカー選手がランプをつけ始めた。

BACK INTO ENGLISH

While studying at the cemetery, a footballer suddenly started to turn on the lamp.

INTO JAPANESE

墓地で勉強していると、あるサッカー選手が突然ランプをつけ始めた。

BACK INTO ENGLISH

While studying at the cemetery, a footballer suddenly started to turn on the lamp.