YOU SAID:

I don't think this is very nice...

INTO JAPANESE

これはあまりいいとは思いません...

BACK INTO ENGLISH

I don't think this is very good ...

INTO JAPANESE

私は、これはあまり良い考えではないと思います。

BACK INTO ENGLISH

I don't think that this is a very good idea.

INTO JAPANESE

私は、これはあまり良い考えではないと思います。

BACK INTO ENGLISH

I don't think that this is a very good idea.