YOU SAID:

I once saw a possum in the road

INTO JAPANESE

道路でポッサムを見たことがあります

BACK INTO ENGLISH

I've seen possum on the road

INTO JAPANESE

道路でポッサムを見た

BACK INTO ENGLISH

I saw possum on the road

INTO JAPANESE

道路でポッサムを見た

BACK INTO ENGLISH

I saw possum on the road