YOU SAID:

i dont think you should do that

INTO JAPANESE

私はあなたがそれをすべきではないと思う

BACK INTO ENGLISH

i don't think you should do it

INTO JAPANESE

するべきじゃないと思う

BACK INTO ENGLISH

I don't think we should do it.

INTO JAPANESE

するべきじゃないと思う

BACK INTO ENGLISH

I don't think we should do it.