YOU SAID:
i have a christmas tree
INTO JAPANESE
私はクリスマスツリーを持っています
BACK INTO ENGLISH
I have a christmas tree
INTO JAPANESE
クリスマスツリーがあります
BACK INTO ENGLISH
There is a Christmas tree
INTO JAPANESE
クリスマスツリーがあります
BACK INTO ENGLISH
There is a Christmas tree
That didn't even make that much sense in English.