YOU SAID:
this is the hardest dog I have ever danced with
INTO JAPANESE
これは私が今まで踊った中で最も難しい犬です
BACK INTO ENGLISH
This is the hardest dog I've ever danced
INTO JAPANESE
これは私が今まで踊った中で最も難しい犬です
BACK INTO ENGLISH
This is the hardest dog I've ever danced
You've done this before, haven't you.