YOU SAID:

I really don't think it will work well.

INTO JAPANESE

私は本当にそれがうまくいくとは思わない。

BACK INTO ENGLISH

I don't think I really it will work.

INTO JAPANESE

私は思わない本当にうまくなります。

BACK INTO ENGLISH

I do not think really will be fine.

INTO JAPANESE

そんなのないと思うは本当に罰金になります。

BACK INTO ENGLISH

I do not think really will be fine.