YOU SAID:
you cant theach an old dog new tricks
INTO JAPANESE
あなたは老犬に新しいトリックを教えることができません
BACK INTO ENGLISH
You can't teach old dogs new tricks
INTO JAPANESE
あなたは老犬に新しいトリックを教えることはできません
BACK INTO ENGLISH
You can't teach old dogs new tricks
Come on, you can do better than that.