YOU SAID:

I was eating when a plane crashed into the house next door.

INTO JAPANESE

私が食事をしていたとき、飛行機が隣の家に墜落しました。

BACK INTO ENGLISH

While I was eating, a plane crashed into my neighbor's house.

INTO JAPANESE

私が食事をしているときに、飛行機が隣の家に墜落しました。

BACK INTO ENGLISH

A plane crashed into my neighbor's house while I was eating.

INTO JAPANESE

私が食事をしていたときに、飛行機が隣の家に墜落しました。

BACK INTO ENGLISH

A plane crashed into my neighbor's house while I was eating.