YOU SAID:
I was in the airport when I saw my family waiting for me
INTO JAPANESE
家族が待っているのを見て空港にいた
BACK INTO ENGLISH
I was at the airport when I saw my family waiting.
INTO JAPANESE
家族が待っているのを見て、私は空港にいた。
BACK INTO ENGLISH
I was at the airport when I saw my family waiting.
You've done this before, haven't you.