YOU SAID:

The person jumped out if the window

INTO JAPANESE

窓があったら人が飛び降りた

BACK INTO ENGLISH

If there was a window, people jumped down

INTO JAPANESE

窓があったら人は飛び降りる

BACK INTO ENGLISH

If there is a window, people will jump down

INTO JAPANESE

窓があれば人は飛び降りるだろう

BACK INTO ENGLISH

If there were windows, people would jump

INTO JAPANESE

もし窓があったら人々は飛び降りるだろう

BACK INTO ENGLISH

If there were windows people would jump out

INTO JAPANESE

もし窓があったら人々は飛び出すだろう

BACK INTO ENGLISH

If there were windows people would jump out