YOU SAID:

Oh my goodness this is very good stuff

INTO JAPANESE

ああ、私の良さは、これは非常に良いものです

BACK INTO ENGLISH

Oh, my goodness, this is a very good thing

INTO JAPANESE

ああ、私の良さ、これは非常に良いことです

BACK INTO ENGLISH

Oh, my goodness, this is a very good thing