YOU SAID:
Nobody has ever seen a green duck.
INTO JAPANESE
誰も緑のアヒルを見たことがありません。
BACK INTO ENGLISH
No one has seen a green duck.
INTO JAPANESE
誰もが緑のアヒルを見たことがありません。
BACK INTO ENGLISH
Everyone has never seen a green duck.
INTO JAPANESE
誰もが緑のアヒルを見たことがない。
BACK INTO ENGLISH
Everyone has never seen a green duck.
Come on, you can do better than that.