YOU SAID:

really think that's not such a good idea

INTO JAPANESE

それはそんなに良い考えではないと本当に思う

BACK INTO ENGLISH

I really think it's not that good idea

INTO JAPANESE

私は本当にそれは良い考えではないと思います

BACK INTO ENGLISH

I really don't think it's a good idea

INTO JAPANESE

良い考えだとは思わないわ

BACK INTO ENGLISH

And I really don't think it's a good idea.

INTO JAPANESE

良い考えだとは思わないわ

BACK INTO ENGLISH

And I really don't think it's a good idea.