YOU SAID:
I really want my lost poster back.
INTO JAPANESE
私は失われたポスターを本当に欲しがっています。
BACK INTO ENGLISH
I really want a lost poster.
INTO JAPANESE
私は本当に失われたポスターが欲しいです。
BACK INTO ENGLISH
I really want a lost poster.
You've done this before, haven't you.